Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| assessment of heavy metals in some wild edible mushrooms collected from yunnan province, china. | eight heavy metals (cu, zn, fe, mn, cd, cr, ni, and pb) in 14 different wild-growing edible mushroom species (coprinus comatus, voluariella volvacea, pleurotus nebrodensis, hypsizigus marmoreus, hericium erinaceus, agrocybe aegerita, lenfinus edodes, collybia velutipes, agaricus bisporus, russula albida, clitocybe conglobata, pleurotus eryngii, lepista sordida, and pleurotus ostreatus) collected from yunnan province, china, were determined by inductively coupled plasma-atomic emission spectromet ... | 2010 | 20976551 |
| extraction and application of laccases from shimeji mushrooms (pleurotus ostreatus) residues in decolourisation of reactive dyes and a comparative study using commercial laccase from aspergillus oryzae. | oxidases are able to degrade organic pollutants; however, high costs associated with biocatalysts production still hinder their use in environmental biocatalysis. our study compared the action of a commercial laccase from aspergillus oryzae and a rich extract from pleurotus ostreatus cultivation residues in decolourisation of reactive dyes: drimaren blue x-3lr (dmblr), drimaren blue x-bln (dmbbln), drimaren rubinol x-3lr (dmr), and drimaren blue c-r (rbbr). the colour removal was evaluated by co ... | 2010 | 21052547 |
| in vitro antitumor and immunomodulatory effects of the protein pcp-3a from mushroom pleurotus citrinopileatus. | a nonlectin glycoprotein (pcp-3a) newly isolated from the fruit body of edible golden oyster mushroom pleurotus citrinopileatus has been shown to be growth inhibitory against human myeloid leukemic u937 cells in a previous report. there is a well-recognized relation between antitumor activity and immunomodulation. the immunomodulatory activity of pcp-3a was therefore assessed in the present study. human mononuclear cells (mnc) and the cd4(+) t lymphocytes isolated from them were stimulated separ ... | 2010 | 21053905 |
| in vivo bioavailability of selenium in enriched pleurotus ostreatus mushrooms. | the in vivo bioavailability of se was investigated in enriched pleurotus ostreatus mushrooms. a bioavailability study was performed using 64 wistar male rats separated in 8 groups and fed with different diets: without se, with mushrooms without se, with enriched mushrooms containing 0.15, 0.30 or 0.45 mg kg(-1) se and a normal diet containing 0.15 mg kg(-1) of se using sodium selenate. the experiment was performed in two periods: depletion (14 days) and repletion (21 days), according to the asso ... | 2010 | 21069148 |
| a heteropolysaccharide from aqueous extract of an edible mushroom, pleurotus ostreatus cultivar: structural and biological studies. | a water soluble polysaccharide isolated from the hot aqueous extract of pleurotusostreatus cultivar was found to contain d-glucose and d-galactose in a molar ratio of nearly 7:1. structural investigation was carried out using acid hydrolysis, methylation analysis, periodate oxidation, smith degradation, and nmr studies ((1)h, (13)c, dept-135, tocsy, dqf-cosy, noesy, roesy, hmqc, and hmbc). on the basis of the above mentioned experiments the structure of the repeating unit of the polysaccharide w ... | 2011 | 21129732 |
| immunofluorescence microscopy of the microtubule cytoskeleton during conjugate division in the dikaryon pleurotus ostreatus n001. | fluorescence microscopy was used to describe the distribution of nuclei and the organization of the microtubule network in hyphae of pleurotus ostreatus. dikaryotic hyphae of p. ostreatus n001 grow by tip extension with two closely spaced nuclei moving slowly forward with the growing hyphal tip. during vegetative growth of the hyphae, cytoplasmic microtubules are found as long filaments oriented longitudinally within fungal hyphae. when the apical cell reaches a length of approximately 150 μm, t ... | 2010 | 21148827 |
| structure of gene coding for the fruit body-specific hydrophobin fbh1 of the edible basidiomycete pleurotus ostreatus. | two fruit body-specific hydrophobins (fbh1 and poh1) have been identified in two different strains of the edible basidiomycete pleurotus ostreatus. comparison of their nucleotide and amino acid sequences yielded similarity values (59% and 66%, respectively) smaller than those found for alleles of the same hydrophobin gene but higher than those found for different hydrophobin genes in p. ostreatus var. florida (peñas et al 2002). in this paper, we have addressed the question of fbh1 and poh1 alle ... | 2010 | 21148831 |
| variations of lignocellulosic activities in dual cultures of pleurotus ostreatus and trichoderma longibrachiatum on unsterilized wheat straw. | trichoderma spp., soil filamentous fungi, are antagonists that can cause great losses in mushroom production. we have investigated the influence of t. longibrachiatum on the production of lignocellulolytic enzymes by pleurotus ostreatus during its vegetative growth on a straw-based cultivation substrate that either had been sterilized, pasteurized or not heat treated. the variations in the lignocellulolytic activities and the electrophoretic patterns in single and dual cultures were used as a to ... | 2010 | 21148892 |
| the white-rot fungus pleurotus ostreatus secretes laccase isozymes with different substrate specificities. | four laccase isozymes (lcc1, lcc2, lcc3 and lcc4) synthesized by pleurotus ostreatus strain v-184 were purified and characterized. lcc1 and lcc2 have molecular masses of about 60 and 65 kda and exhibited the same pi value (3.0). their n termini were sequenced, revealing the same amino acid sequence and homology with laccases from other microorganisms. laccases lcc3 and lcc4 were characterized by sds-page, estimating their molecular masses around 80 and 82 kda, respectively. by native isoelectrof ... | 2010 | 21149010 |
| production of xyloglucanolytic enzymes by trichoderma viride, paecilomyces farinosus, wardomyces inflatus, and pleurotus ostreatus. | different conditions of culture medium, incubation time, concentration and surfactant were tested to determine xyloglucanase activity. trichoderma viride, paecilomyces farinosus, wardomyces inflatus and pleurotus ostreatus showed increased xyloglucanase activities when the fungi grown on microcrystalline cellulose as the sole carbon source. endoxyloglucanase activity increased with the growth of the fungi and reached a peak on day 14 of incubation, practically 95% of the activity was associated ... | 2002 | 21156511 |
| effect of pleuran (β-glucan from pleurotus ostreatus) supplementation on cellular immune response after intensive exercise in elite athletes. | excessive and exhausting physical loads depress the immune system. carbohydrate consumption may minimize the postexercise suppression of the innate immune system. β-glucan is a well-known immunomodulator, with positive effects on the functioning of immunocompetent cells. the goal of this study was to determine whether β-glucan dietary supplementation from the mushroom pleurotus ostreatus decreases the suppressed immune system responses induced by short-term high-intensity exercise in humans. in ... | 2010 | 21164546 |
| α-(1 → 3)-d-glucans from fruiting bodies of selected macromycetes fungi and the biological activity of their carboxymethylated products. | purpose of work: to show biological activity of carboxymethylated α-(1 → 3)-d-glucans isolated from the selected macromycetes fungi on human tumor and normal cells. water-insoluble, alkali-soluble polysaccharides (wip) were isolated from fruiting bodies of four macromycetes fungi: lentinus edodes, pleurotus ostreatus, piptoporus betulinus and laetiporus sulphureus. the structure of the polysaccharides was determined using composition analysis, methylation analysis, fourier transform infrared spe ... | 2010 | 21188616 |
| search for new naturally occurring strains of pleurotus to improve yields. pleurotus albidus as a novel proposed species for mushroom production. | background: the species of genus pleurotus are worldwide cultivated. aims: to evaluate growth, yield production and morphological variations of fruiting bodies obtained from the cultivation of fourteen naturally occurring pleurotus strains isolated from argentina. methods: the strains growth was tested at different temperatures on nobles' medium. substrates assayed were: supplemented salix sawdust, supplemented and non supplemented wheat straw. the species studied were pleurotus albidus, pleurot ... | 2011 | 21241817 |
| pleuran (β-glucan from pleurotus ostreatus) supplementation, cellular immune response and respiratory tract infections in athletes. | prolonged and exhausting physical activity causes numerous changes in immunity and sometimes transient increases the risk of upper respiratory tract infections (urtis). nutritional supplements as countermeasures to exercise-induced changes have increasingly been studied in the last decade. one of the most promising nutritional supplements is β-glucan, a well-known immunomodulator with positive effects on the function of immunocompetent cells. in this double blind, placebo-controlled study, we in ... | 2011 | 21249381 |
| pleurotus ostreatus manganese-dependent peroxidase silencing impairs decolourization of orange ii. | decolourization of azo dyes by pleurotus ostreatus, a white-rot fungus capable of lignin depolymerization and mineralization, is related to the ligninolytic activity of enzymes produced by this fungus. the capacity of p. ostreatus to decolourize the azo dye orange ii (oii) was dependent and positively co-linear to mn(2+) concentration in the medium, and thus attributed to mn(2+)-dependent peroxidase (mnp) activity. based on the ongoing p. ostreatus genome deciphering project we identified at lea ... | 2010 | 21255310 |
| morphology and laccase production of white-rot fungi grown on wheat bran flakes under semi-solid-state fermentation conditions. | in this paper, we studied the laccase production and the growth morphology of different white-rot fungi, i.e. pleurotus ostreatus, trametes pubescens, cerrena unicolor and trametes versicolor, cultured under semi-solid-state fermentation conditions using wheat bran flakes as a natural low-cost support substrate. trametes versicolor exhibited the highest laccase activity per gram of total dry matter, followed by p. ostreatus (63.5 and 58.2ug(-1) , respectively). in addition, they showed a time pr ... | 2011 | 21291496 |
| application of 2iii7-3 fractional factorial experimental design to enhance enzymatic activities of pleurotus ostreatus with high concentrations of polychlorinated biphenyls. | a 2(iii)(7-3) fractional factorial experimental design was used to establish 16 culture media, with and without pcbs to enhance the activities of laccase (lac), manganese peroxidase (mnp), and versatile peroxidase (vp) produced by the white rot fungus pleurotus ostreatus. the culture was added to 10,000 mg l(-1) of transformer oil, containing 71% of the identified arochlor 1242. the culture conditions were established with eight variables at two values (levels); ph (4 and 6), agitation (100 and ... | 2011 | 21308601 |
| effect of light and reductones on differentiation of pleurotus ostreatus. | vegetative mycelia of pleurotus ostreatus were differentiated into primordia and subsequently into fruit bodies in synthetic sucrose-asparagine medium when exposed to light at low temperature. during photo-morphogenesis, l-ascorbic acid-like substances called reductones were produced. l-ascorbic acid, d-erythroascorbic acid, 5-o-(α-d-glucopyranosyl)-d-erythroascorbic acid, 5-o-(α-d-xylopyranosyl)-d-erythroascorbic acid, 5-methyl-5-o-(α-d-glucopyranosyl)-d-erythroascorbic acid and 5-methyl-5-o-(α ... | 2011 | 21369982 |
| effect of calcinated oyster shell powder on growth, yield, spawn run, and primordial formation of king oyster mushroom (pleurotus eryngii). | this study was conducted to evaluate the calcium (ca) absorption efficacy of king oyster mushroom (pleurotus eryngii) grown on sawdust medium supplemented with ca-sources, including oyster shell powder, and to determine the efficacy of oyster shell powder as a calcium supplement on growth, yield, spawn run and primordial formation of p. eryngii. optimum calcination of oyster shell powder was achieved at the temperature of 620.56 °c. a 1% supplementation of oyster shell powder in sawdust medium d ... | 2011 | 21394076 |
| disposable diapers biodegradation by the fungus pleurotus ostreatus. | this research assesses the feasibility of degrading used disposable diapers, an important component (5-15% in weight) of urban solid waste in mexico, by the activity of the fungus pleurotus ostreatus, also known as oyster mushroom. disposable diapers contain polyethylene, polypropylene and a super absorbent polymer. nevertheless, its main component is cellulose, which degrades slowly. p. ostreatus has been utilized extensively to degrade cellulosic materials of agroindustrial sources, using in s ... | 2011 | 21474296 |
| skin test reactivity of allergic subjects to basidiomycetes' crude extracts in a tropical environment. | fungal allergies can be detected by the skin prick test with extracts of the organisms, but not all fungi, including the basidiomycetes, are being examined. we determined the level of sensitization to basidiomycetes in allergic subjects and compared their reactivity to commercial extracts commonly used to detect allergies. crude spore extracts of the basidiomycetes ganoderma applanatum, chlorophyllum molybdites, and pleurotus ostreatus, which are known to release numerous spores, were examined a ... | 2011 | 21506892 |
| anti-inflammatory activity of edible oyster mushroom is mediated through the inhibition of nf-kb and ap-1 signaling. | abstract: background: mushrooms are well recognized for their culinary properties as well as for their potency to enhance immune response. in the present study, we evaluated anti-inflammatory properties of an edible oyster mushroom (pleurotus ostreatus) in vitro and in vivo. methods: raw264.7 murine macrophage cell line and murine splenocytes were incubated with the oyster mushroom concentrate (omc, 0-100 ug/ml) in the absence or presence of lipopolysacharide (lps) or concanavalin a (cona), resp ... | 2011 | 21575254 |
| inhibitory effect of a glycoprotein isolated from golden oyster mushroom (pleurotus citrinopileatus) on the lipopolysaccharide-induced inflammatory reaction in raw 264.7 macrophage. | mushrooms have become an important source of natural antitumor, antiviral, anti-bacterial, immunomodulatory, and anti-inflammatioy agents. golden oyster mushroom, pleurotus citrinopileatus, is a common mushroom in oriental countries for human consumption. the present study was to investigate the anti-inflammatory reaction and immunomodulatory of the bioactive non-lectin glycoprotein (pcp-3a) isolated from the fresh fruiting body of this mushroom. western blot analysis on lps-induced inos, cox-2, ... | 2011 | 21627087 |
| co-cultivation of mutant penicillium oxalicum sau(e)-3.510 and pleurotus ostreatus for simultaneous biosynthesis of xylanase and laccase under solid-state fermentation. | co-cultivation of mutant penicillium oxalicum sau(e)-3.510 and pleurotus ostreatus mtcc 1804 was evaluated for the production of xylanase-laccase mixture under solid-state fermentation (ssf) condition. growth compatibility between mutant p. oxalicum sau(e)-3.510 and white rot fungi (p. ostreatus mtcc 1804, trametes hirsuta mtcc 136 and pycnoporus sp. mtcc 137) was analyzed by growing them on potato dextrose agar plate. extracellular enzyme activities were determined spectrophotometrically. under ... | 2011 | 21642024 |
| co-cultured production of lignin-modifying enzymes with white-rot fungi. | co-cultivation was a potential strategy in lignocellulolytic biodegradation with producing high activity enzymes due to their synergistic action. the objective of this study was to investigate the rarely understood effects of co-culturing of two white-rot fungi on lignin-modifying enzymes (lmes) production. six species, bjerkandera adusta, phlebia radiata, pleurotus ostreatus, dichomitus squalens, hypoxylon fragiforme and pleurotus eryngii, were cultured in pairs to study the production of lmes. ... | 2011 | 21647688 |
| fungal solid state fermentation on agro-industrial wastes for acid wastewater decolorization in a continuous flow packed-bed bioreactor. | this study was aimed at developing a process of solid state fermentation (ssf) with the fungi pleurotus ostreatus and trametes versicolor on apple processing residues for wastewater decolorization. both fungi were able to colonize apple residues without any addition of nutrients, material support or water. p. ostreatus produced the highest levels of laccases (up to 9u g(-1) of dry matter) and xylanases (up to 80u g(-1) of dry matter). a repeated batch decolorization experiment was set up with ap ... | 2011 | 21652205 |
| response to oyster mushroom (pleurotus ostreatus) extract by sensitized and nonsensitized guinea pig trachea. | occupational exposure to oyster mushroom (pleurotus ostreatus) has been associated with obstructive lung disease. previously, we studied an extract of oyster mushroom (ome) and determined that it causes dose-dependent contractions of nonsensitized guinea pig trachea (gpt). we extend these studies to the investigation of sensitized tissue. in the present study 24 animals were sensitized using ovalbumin (oa) and subsequently challenged with an aerosol of 2.5% oa. a control group of 12 nonsensitize ... | 2011 | 21667260 |
| the use of a white rot fungi (pleurotus ostreatus) immobilized on amberlite xad-4 as a new biosorbent in trace metal determination. | the present work proposes the use of pleurotus ostreatus immobilized on amberlite xad-4 as new biosorbent in trace metal determination. the effects of experimental parameters, such as "ph and flow rate of sample solution, amount of solid phase, eluent type, and concentration" on the recovery of the metal ions were investigated. maximum adsorption of cr(iii), cd(ii) and cu(ii) ions took place in the ph range 4-5. these metal ions can be desorbed with 1m hcl (recovery 95-100%). 0.2g adsorbent amou ... | 2011 | 21737258 |
| transformation of the recalcitrant pharmaceutical compound carbamazepine by pleurotus ostreatus: role of cytochrome p450 monooxygenase and manganese peroxidase. | carbamazepine (cbz) is an environmentally recalcitrant compound highly stable in soil and during wastewater treatment. in this study, we examined the mechanisms by which the white-rot fungus pleurotus ostreatus metabolizes cbz in liquid culture using a physiological approach. p. ostreatus pc9 was grown in media known to support different levels of a multiplicity of enzyme systems such as cytochrome p450 (cyp450) and manganese peroxidase (mnp). when both cyp450 and mnp systems were active, 99% of ... | 2011 | 21744850 |
| anti-cancer effects of protein extracts from calvatia lilacina, pleurotus ostreatus and volvariella volvacea. | calvatia lilacina (cl), pleurotus ostreatus (po) and volvariella volvacea (vv) are widely distributed worldwide and commonly eaten as mushrooms. in this study, cell viabilities were evaluated for a human colorectal adenocarcinoma cell line (sw480 cells) and a human monocytic leukemia cell line (thp-1 cells). apoptotic mechanisms induced by the protein extracts of po and vv were evaluated for sw480 cells. the viabilities of thp-1 and sw480 cells decreased in a concentration-dependent manner after ... | 2011 | 21792367 |
| antihyperlipidemic effects of pleurotus ostreatus (oyster mushrooms) in hiv-infected individuals taking antiretroviral therapy. | abstract: | 2011 | 21831304 |
| Thermus composti sp. nov., isolated from oyster mushroom compost. | A Gram-negative, rod-shaped bacterium strain (K-39(T)) was isolated from the thermophilic phase of the composting process for oyster mushroom substrate preparation. The strain grew at 40-80 °C (optimum, 65-75 °C), at pH 5-9 (optimum, pH 7), in media containing up to 1.5% (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain K-39(T) formed a distinct lineage within the genus Thermus. Its closest cultivated relative was Thermus islandicus PRI 3838(T) (96.8% similari ... | 2011 | 21856987 |
| Profiling of hepatic gene expression of mice fed with edible japanese mushrooms by DNA microarray analysis: comparison among Pleurotus ostreatus, Grifola frondosa, and Hypsizigus marmoreus. | To compare and estimate the effects of dietary intake of three kinds of mushrooms (Pleurotus ostreatus, Grifola frondosa, and Hypsizigus marmoreus), mice were fed a diet containing 10-14% of each mushroom for 4 weeks. Triacylglycerol in the liver and plasma decreased and plasma cholesterol increased in the P. ostreatus-fed group compared with those in the control group. Cholesterol in the liver was lower in the G. frondosa-fed group than in the control group, but no changes were found in the H. ... | 2011 | 21910414 |
| influence of calcium and silicon supplementation into pleurotus ostreatus substrates on quality of fresh and canned mushrooms. | supplements of gypsum (calcium source), pumice (silicon source) and pumice sulfate (silicon and calcium source) into substrates for oyster mushrooms (pleurotus ostreatus) were searched for their effects on production as well as qualities of fresh and canned mushrooms. the addition of pumice up to 30% had no effect on total yield, size distribution and cap diameters. the supplementation of gypsum at 10% decreased the total yield; and although gypsum at 5% did not affect total yield, the treatment ... | 2011 | 21917642 |
| Acylhomoserine lactone production by bacteria associated with cultivated mushrooms. | The main bacterial pathogens of cultivated mushroom as well as mushroom-associated bacteria, which were isolated from Agaricus bisporus, Pleurotus ostreatus and Pleurotus eryngii mushroom niches, were evaluated for the production of N-acyl-L-homoserine lactones (AHLs) by using four bioreporters. Furthermore, identification of AHLs by LC-ESI-FTICR MS was performed on culture filtrates of selected pathogens and mushroom-associated bacteria strains, which resulted in inducing at least one of the fo ... | 2011 | 21942309 |
| biodegradation of chlorobenzoic acids by ligninolytic fungi. | we investigated the abilities of several perspective ligninolytic fungal strains to degrade 12 mono-, di- and trichloro representatives of chlorobenzoic acids (cbas) under model liquid conditions and in contaminated soil. attention was also paid to toxicity changes during the degradation, estimated using two luminescent assay variations with vibrio fischeri. the results show that almost all the fungi were able to efficiently degrade cbas in liquid media, where irpex lacteus, pycnoporus cinnabari ... | 2011 | 21963171 |
| influence of pleurotus ostreatus inoculation on wood degradation and fungal colonization. | the influence of pleurotus ostreatus inoculation on wood degradation and on fungal community structure was studied. the experiments were performed on an organically poor fly ash deposit covered with a 10 cm layer of beech wood chips inoculated with p. ostreatus isolate zim76. compared to non-inoculated wood chips, inoculation increased the temperatures and relative humidities and, in the first 6 months, accelerated klason lignin degradation by 9% and also, after 17 months, increased iron translo ... | 2011 | 21963903 |
| biosorption of methylene blue onto spent corncob substrate: kinetics, equilibrium and thermodynamic studies. | this study focuses on the possible use of the spent corncob substrate (scs), an agricultural waste used after the cultivation of white rot fungus pleurotus ostreatus, to adsorb methylene blue (mb) from aqueous solutions. a batch adsorption study was carried out with variable solution ph, adsorption time, temperature and initial mb concentration. it was found that mb uptake was favorable at ph ranging from 4.0 to 12.0 and the equilibrium adsorption capacity can be reached promptly within about 18 ... | 2011 | 22049698 |
| Chemical composition and nutritional value of the most widely appreciated cultivated mushrooms: An inter-species comparative study. | Herein, it was reported and compared the chemical composition and nutritional value of the most consumed species as fresh cultivated mushrooms: Agaricus bisporus (white and brown mushrooms), Pleurotus ostreatus (oyster mushroom), Pleurotus eryngii (King oyster mushroom), Lentinula edodes (Shiitake) and Flammulina velutipes (Golden needle mushroom). Shiitake revealed the highest levels of macronutrients, unless proteins, as also the highest sugars, tocopherols and PUFA levels, and the lowest SFA ... | 2011 | 22056333 |
| genomics and transcriptomics characterization of genes expressed during postharvest at 4°c by the edible basidiomycete pleurotus ostreatus. | pleurotus ostreatus is an industrially cultivated basidiomycete with nutritional and environmental applications. its genome, which was sequenced by the joint genome institute, has become a model for lignin degradation and for fungal genomics and transcriptomics studies. the complete p. ostreatus genome contains 35 mbp organized in 11 chromosomes, and two different haploid genomes have been individually sequenced. in this work, genomics and transcriptomics approaches were employed in the study of ... | 2011 | 22069155 |
| low impact strategies to improve ligninolytic enzyme production in filamentous fungi: the case of laccase in pleurotus ostreatus. | the ever-increasing demand of laccases for biodelignification, industrial oxidative processes and environmental bioremediation requires the production of large quantities of enzymes at low cost. the present work was carried out to reduce laccase production costs in liquid fermentations of the white-rot fungus pleurotus ostreatus through two different approaches. in the first, screening of fungal spent media as natural laccase inducer was performed, eliminating the presence of potentially toxic/r ... | 2011 | 22078734 |
| fungal laccases: versatile tools for lignocellulose transformation. | conversion of lignocellulosic materials to useful, high value products normally requires a pre-treatment step to transform or deconstruct the recalcitrant and heterogeneous lignin fraction. the development of "green tools" for the transformation of lignocellulosic feedstocks is in high demand for a sustainable exploitation of such resources. this multi-faceted challenge is being addressed by an ever-increasing suite of ligninolytic enzymes isolated from various sources. among these, fungal lacca ... | 2011 | 22078735 |
| pleurotus ostreatus heme peroxidases: an in silico analysis from the genome sequence to the enzyme molecular structure. | an exhaustive screening of the pleurotus ostreatus genome was performed to search for nucleotide sequences of heme peroxidases in this white-rot fungus, which could be useful for different biotechnological applications. after sequence identification and manual curation of the corresponding genes and cdnas, the deduced amino acid sequences were converted into structural homology models. a comparative study of these sequences and their structural models with those of known fungal peroxidases revea ... | 2011 | 22078736 |
| a family gh51 α-l: -arabinofuranosidase from pleurotus ostreatus: identification, recombinant expression and characterization. | an α-l: -arabinofuranosidase produced by pleurotus ostreatus (poabf) during solid state fermentation on tomato pomace was identified and the corresponding gene and cdna were cloned and sequenced. molecular analysis showed that the poabf gene carries 26 exons interrupted by 25 introns and has an open reading frame encoding a protein of 646 amino acid residues, including a signal peptide of 20 amino acid residues. the amino acid sequence similar to the other α-l: -arabinofuranosidases indicated th ... | 2011 | 22080345 |
| Trypanocidal Activity of Ergosterol Peroxide from Pleurotus ostreatus. | Chagas' disease, which is caused by the protozoan parasite Trypanosoma cruzi, is a public health problem in South America affecting millions of people, and more recently several thousands in countries where the disease is not endemic. Due to the magnitude of the problem, finding a cure for this disease remains a major challenge. The aim of this study is to evaluate the trypanocidal activity of ergosterol peroxide (5a, 8a-epidioxy-22E-ergosta-6, 22-dien-3ß-ol) isolated from Pleurotus ostreatus (J ... | 2011 | 22083593 |
| comparative study of antioxidant activities and total phenolic content of selected edible wild mushrooms. | the present study aims to assess the antioxidant activities (aoa) and total phenolic content (tpc) of water extracts of selected edible wild mushrooms: pleurotus porrigens, schizophyllum commune, hygrocybe conica, and lentinus ciliatus. the aoa were evaluated against dpph radical and abts radical cation scavenging ability, ferric-reducing antioxidant power (frap) and beta-carotene-linoleate bleaching (beta-cb) assays, and the folin-ciocalteu method for tpc. bha was used as reference. p. porrigen ... | 2011 | 22135876 |
| Antioxidant properties of extracts of wild medicinal mushroom species from Croatia. | Antioxidant activity and total phenol (TP) content of methanol and water extracts of three wild Croatian mushroom species Auricularia auricula-judae (Bull.) Quél., Sarcoscypha austriaca (Sacc.) Boud., and Strobilurus esculentus (Wulfen) Singer were determined and compared with the values obtained for extracts of four cultivated mushrooms Agaricus bisporus (J.E. Lange) Imbach (brown and white strains), Pleurotus ostreatus (Jacq.) P. Kumm., and Lentinus edodes (Berk.) Singer. Spectrophotometric de ... | 2011 | 22135877 |
| cultivation of the culinary-medicinal lung oyster mushroom, pleurotus pulmonarius (fr.) quél. (agaricomycetideae) on grass plants in taiwan. | cultivation of the culinary-medicinal lung oyster mushroom, pleurotus pulmonarius, on the stalks of three grass plants, i.e., panicum repens, pennisetum purpureum, and zea mays were investigated. the effects of various combinatorial substrates on mushroom mycelial growth and yield calculated as biological efficiency (be) were determined. among 9 experimental substrates, the most suitable substrate for mycelial growth was 45zms:45s, followed by 45prs:45s; their mycelial growth rates were obviousl ... | 2011 | 22135896 |
| Engineered tobacco and microalgae secreting the fungal laccase POXA1b reduce phenol content in olive oil mill wastewater. | Olive oil mill wastewaters (OMWs) are characterised by low pH and a high content of mono- and polyaromatic compounds that exert microbial and phytotoxic activity. The laccase cDNA of the poxA1b gene from Pleurotus ostreatus, carrying a signal peptide sequence for enzyme secretion and driven by the CaMV 35S promoter, was cloned into a plant expression vector. Nuclear genetic transformation was carried out by co-cultivation of Agrobacterium tumefaciens with tobacco cv Samsun NN leaves and cells of ... | 2011 | 22142729 |
| in vitro prevention of cataract by oyster mushroom pleurotus florida extract on isolated goat eye lens. | the aim of the present work was to evaluate the in vitro effect of pleurotus florida extract cataract induced by glucose. | 2011 | 22144771 |
| chemical composition and nutrition value of dried cultivated culinary-medicinal mushrooms from turkey. | dietary fiber, raw fiber, fructose, glucose, sucrose, maltose, vitamin a (retinol), b1 (thiamine), b2 (riboflavin), b6 (pyridoxine), and niacin contents of dried cultivated mushroom species agaricus bisporus (white and brown), lentinus edodes, and pleurotus ostreatus were determined and evaluated for nutrient and chemical composition. assays of dried mushroom samples were carried out after the drying process. dried shiitake samples showed the highest dietary fiber and raw fiber content (23.23 +/ ... | 2011 | 22164765 |
| pleurotus ostreatus spent mushroom compost as green biosorbent for nickel (ii) biosorption. | the potential of pleurotus ostreatus spent mushroom compost (psmc) as a green biosorbent for nickel (ii) biosorption was investigated in this study. a novel approach of using the half-saturation concentration of biosorbent to rapidly determine the uptake, kinetics and mechanism of biosorption was employed together with cost per unit uptake analysis to determine the potential of this biosorbent. fifty per cent nickel (ii) biosorption was obtained at a half-saturation constant of 0.7 g biosorbent ... | 2011 | 22170837 |
| strategies for dephenolization of raw olive mill wastewater by means of pleurotus ostreatus. | the reduction of polyphenols content in olive mill wastewater (omw) is a major issue in olive oil manufacturing. although researchers have pointed out the potential of white-rot fungus in dephenolizing omw, the results available in the literature mainly concern pretreated (sterilized) omw. this paper deals with the reduction of polyphenols content in untreated omw by means of a white-rot fungus, pleurotus ostreatus. dephenolization was performed both in an airlift bioreactor and in aerated flask ... | 2012 | 22179541 |
| self-assembly of hydrophobin protein rodlets studied with atomic force spectroscopy in dynamic mode. | we have investigated the self-assembling properties of the class i hydrophobin vmh2 isolated from the fungus pleurotus ostreatus. five different hydrophobin self assembled samples including monolayers, bilayers, and rodlets have been prepared by langmuir technique and studied at the nanoscale. local wettability and visco-elasticity of the different hydrophobins samples were obtained from atomic force spectroscopy experiments in dynamic mode performed at different, controlled relative humidity (r ... | 2012 | 22181848 |
| photo-irradiated biosynthesis of silver nanoparticles using edible mushroom pleurotus florida and their antibacterial activity studies. | this is a report on photo-irradiated extracellular synthesis of silver nanoparticles using the aqueous extract of edible oyster mushroom (pleurotus florida) as a reducing agent. the appearance, size, and shape of the silver nanoparticles are understood by uv-visible spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and atomic force microscopy. the x-ray diffraction studies, energy dispersive x-ray analysis indicate that particles are crystalline in natu ... | 2011 | 22190895 |
| construction of a genetic linkage map based on amplified fragment length polymorphism markers and development of sequence-tagged site markers for marker-assisted selection of the sporeless trait in the oyster mushroom (pleurotus eryngii). | a large number of spores from fruiting bodies can lead to allergic reactions and other problems during the cultivation of edible mushrooms, including pleurotus eryngii (dc.) quél. a cultivar harboring a sporulation-deficient (sporeless) mutation would be useful for preventing these problems, but traditional breeding requires extensive time and labor. in this study, using a sporeless p. eryngii strain, we constructed a genetic linkage map to introduce a molecular breeding program like marker-assi ... | 2012 | 22210222 |
| [effect of polycyclic aromatic hydrocarbons on laccase production by white rot fungus pleurotus ostreatus d1]. | the effect of polycyclic aromatic hydrocarbons (pahs) on the dynamics of laccase production by the fungus pleurotus ostreatus d1 under conditions of submerged cultivation on kirk's medium has been studied. it has been shown that phenanthrene, fluoranthene, pyrene, and chrysene actively induce this enzyme, whereas fluorene and anthrecene had a smaller effect. addition of mn2+ ions to cultivation medium elevates the laccase activity twofold and more in the presence of all the studied pahs. electro ... | 2016 | 22232903 |
| production, purification and characterisation of polysaccharides from pleurotus ostreatus with antitumour activity. | mushroom polysaccharides play an important role in functional foods because they exhibit biological modulator properties such as antitumour, antiviral and antibacterial activities. the present study involved the production, purification and characterisation of intracellular and extracellular free and protein-bound polysaccharides from pleurotus ostreatus and the investigation of their growth-inhibitory effect on human carcinoma cell lines. | 2012 | 22234986 |
| environmental conditions modulate the switch among different states of the hydrophobin vmh2 from pleurotus ostreatus. | fungal hydrophobins are amphipathic, highly surface-active, and self-assembling proteins. the class i hydrophobin vmh2 from the basidiomycete fungus pleurotus ostreatus seems to be the most hydrophobic hydrophobin characterized so far. structural and functional properties of the protein as a function of the environmental conditions have been determined. at least three distinct phenomena can occur, being modulated by the environmental conditions: (1) when the ph increases or in the presence of ca ... | 2012 | 22292968 |
| biodecontamination of water from bisphenol a using ligninolytic fungi and the modulation role of humic acids. | bisphenol a (bpa) is an endocrine disruptor compound (edc) of xenobiotic origin occurring in natural waters and wastewaters, especially in the most industrialized and urbanized areas. recent investigations report the use of ligninolytic fungi for the removal of aromatic contaminants, including some edcs, from different matrices. humic acids (ha) are widely spread in all natural systems and their presence is ascertained to interfere with microbial growth and activity. the objective of this study ... | 2012 | 22305120 |
| antitumor effect of culinary-medicinal oyster mushroom, pleurotus ostreatus (jacq.: fr.) p. kumm., derived protein fraction on tumor-bearing mice models. | previously, we reported the in vitro anticancer and immunomodulatory effect of a protein fraction designated as cibacron blue affinity purified protein (cbaep) obtained from the culinary-medicinal oyster mushroom, pleurotus ostreatus. in the present study, we investigated the in vivo antitumor potential of cbaep in different tumor-bearing mice models and studied the detailed mechanism of tumor regression in dalton lymphoma (dl)-bearing mice. the lethal dose (ld50) of cbaep was found to be 55 mg/ ... | 2011 | 22324408 |
| indole compounds in some culinary-medicinal higher basidiomycetes from poland. | methanolic extracts of two species collected from natural habitats in poland, boletus edulis and suillus luteus, and one species from a commercial source, pleurotus ostreatus, were analyzed for the presence of non-hallucinogenic indole compounds. the contents of indole compounds in these species were both qualitatively and quantitatively diverse, ranging from 0.01 to 34.11 mg/100 g d.w. two of 11 tested indole compounds, 5-hydroxytryptophan (0.18, 2.08, 1.63 mg/100 g d.w.) and serotonin (6.52, 1 ... | 2011 | 22324410 |
| expression of hygromycin b resistance in oyster culinary-medicinal mushroom, pleurotus ostreatus (jacq.:fr.)p. kumm. (higher basidiomycetes) using three gene expression systems. | three hygromycin b phosphotransferase (hph) gene expression systems for culinary-medicinal oyster mushroom, pleurotus ostreatus, plasmid pshc, pan7-1, and pbht1 were evaluated through peg/cacl(2)-mediated protoplast transformation. plasmid pshc is a newly constructed hph gene expression system, composed of escherichia coli hph gene, the p. ostreatus sdi promoter, and the camv35s terminator. the vector pan7-1 was commonly used for integrative transformation in filamentous fungi. plasmid pbhtl is ... | 2012 | 22339704 |
| hypolipidemic and antiatherogenesis effect of culinary-medicinal pink oyster mushroom, pleurotus salmoneostramineus l. vass. (higher basidiomycetes), in hypercholesterolemic rats. | the present study was conducted to investigate dietary supplementation of pleurotus salmoneostramineus fruiting bodies on biochemical and histological effects in hyper- and normocholesterolemic rats. six-week-old female sprague-dawley albino rats were divided into three groups of 10 rats each. feeding of diet containing a 5% powder of the fruiting bodies of p. salmoneostramineus in hypercholesterolemic rats reduced plasma total cholesterol, triglyceride, low-density lipoprotein, total lipid, pho ... | 2012 | 22339705 |
| preparation of culinary-medicinal king oyster mushroom pleurotus eryngii-fermented products with high ergothioneine content and their taste quality. | pleurotus eryngii (dc. : fr.) ouel. was used in solid-state fermentation to develop novel mushroom products with a high amount of ergothioneine. the correlation coefficients between ergothioneine content and biomass were 0.8878 and 0.9206 for fermented adlay and buckwheat, respectively. using optimal conditions, pleurotus-fermented adlay and buckwheat (pfa and pfb) with the ergothioneine contents of 795.5 and 786.1 mg/ kg, respectively, were prepared. however, mycelia contained the highest ergot ... | 2012 | 22339711 |
| antioxidant properties and phenolic profile of the most widely appreciated cultivated mushrooms: a comparative study between in vivo and in vitro samples. | the present study reports a comparison of the antioxidant properties and phenolic profile of the most consumed species as fresh cultivated mushrooms and their mycelia produced in vitro: agaricus bisporus (white and brown), pleurotus ostreatus (oyster), pleurotus eryngii (king oyster) and lentinula edodes (shiitake). the antioxidant activity was evaluated through reducing power (folin-ciocalteu and ferricyanide/prussian blue assays), free radical scavenging activity (dpph assay) and lipid peroxid ... | 2012 | 22369965 |
| changes in the activities of enzymes involved in the degradation of butylbenzyl phthalate by pleurotus ostreatus. | degradation of butylbenzyl phthalate (bbp) by the white rot fungus pleurotus ostreatus and the activities of some degrading enzymes were examined in two different media containing 100 mg/l of the compound. p. ostreatus pregrown for 7 days in complex ymg medium was able to completely degrade bbp within an additional 24 h but degraded only 35 mg/l of bbp in 5 days of incubation in minimal medium. fungal cell mass in the culture in ymg medium was higher in the presence than in the absence of bbp. t ... | 2012 | 22370356 |
| laccase production by the aquatic ascomycete phoma sp. uhh 5-1-03 and the white rot basidiomycete pleurotus ostreatus dsm 1833 during submerged cultivation on banana peels and enzyme applicability for the removal of endocrine-disrupting chemicals. | this work aimed to study the production of laccase from pleurotus ostreatus dsm 1833 and phoma sp. uhh 5-1-03 using banana peels as alternative carbon source, the subsequent partial purification and characterization of the enzyme, as well the applicability to degrade endocrine disruptors. the laccase stability with ph and temperature, the optimum ph, the k (m) and v(max) parameters, and the molar mass were determined. tests were conducted for assessing the ability of degradation of the endocrine ... | 2012 | 22371062 |
| pcbs stimulate laccase production and activity in pleurotus ostreatus thus promoting their removal. | pleurotus ostreatus degrades polychlorinated biphenyls (pcbs) with an increase of laccase activity. laccases are well known for their detoxifying activity. we show, using reverse transcription polymerase chain reaction and a biochemical assay, that reduction in pcbs (di, tri, tetra, and penta) levels are correlated with an increase in laccase activity. p. ostreatus cultures were obtained from 0 to 30 days in the presence or absence of 7,100 mg/l pcbs (from transformer oil) and a surfactant. afte ... | 2012 | 22388978 |
| submerged fermentation of the edible mushroom pleurotus ostreatus in a batch stirred tank bioreactor as a promising alternative for the effective production of bioactive metabolites. | the aim of this study was to investigate the potential of the submerged fermentation procedure in the production of bioactive metabolites of the common edible mushroom pleurotus ostreatus. the biomass of the mushroom strain was produced by submerged fermentation in a batch stirred tank bioreactor and extracted by solvents of increasing polarity. the dichloromethane and methanol extract were fractioned by different techniques including adsorption chromatography and fast centrifugal partition chro ... | 2012 | 22395402 |
| transcriptional analysis of pleurotus ostreatus laccase genes. | fungal laccases (p-diphenol:oxygen oxidoreductase; ec 1.10.3.2) are multi-copper-containing oxidases that catalyse the oxidation of a great variety of phenolic compounds and aromatic amines through simultaneous reduction of molecular oxygen to water. fungi generally produce several laccase isoenzymes encoded by complex multi-gene families. the pleurotus ostreatus genome encodes 11 putative laccase coding genes, and only six different laccase isoenzymes have been isolated and characterised so far ... | 2013 | 22395908 |
| biodegradation of oxytetracycline by pleurotus ostreatus mycelium: a mycoremediation technique. | oxytetracycline (otc) is administered in high doses to livestocks and enters the environmental compartments as a consequence of animal waste disposal. as a first step in setting up a useful mycoremediation technique, an otc lab degradation test was performed in liquid medium using the ligninolytic fungus pleurotus ostreatus. otc disappearance in culture medium was clearly evident as early as the third day of exposure onwards, with an almost complete removal after 14d. the drug removal was mediat ... | 2012 | 22436341 |
| effects of fermented oyster mushroom ( pleurotus ostreats) by-product supplementation on growth performance, blood parameters and meat quality in finishing berkshire pigs. | the objective of the present study was to investigate the effects of fermented oyster mushroom (pleurotus ostreats) by-production (fomp) supplementation on the growth performance, blood parameters, carcass traits and meat quality in finishing berkshire pigs. fomp was made by mixing oyster mushroom by-production with rice bran and barley bran and this mixture was fermented for 60 days. the experimental diets were 0, 3, 5 and 7% of fomp added to c, t1, t2 and t3 in the basis diet for 7 weeks. aver ... | 2007 | 22444296 |
| isolation of high quality and yield of rna from agaricus bisporus with a simple, inexpensive and reliable method. | a method for isolating high purity and quantity rna from agaricus bisporus which is rich in proteins, carbohydrate, fiber and secondary metabolites, is described. rna was extracted from mycelium, primordia, sporophores at two development stages and two post-harvest storage stages as well as from pileipellis, inner cap, gill and stipe of the mature sporophore. the a(260)/a(230) and a(260)/a(280) ratios of isolated rna from fruiting bodies were both ~2 and the yield was about 200 μg/g fresh wt (fw ... | 2012 | 22447099 |
| in vitro antimicrobial and antioxidant activities of ethanolic extract of lyophilized mycelium of pleurotus ostreatus pqmz91109. | the antioxidant and antimicrobial potential of the ethanolic extract of pleurotus ostreatus pqmz91109 mycelium was determined based on inorganic and organic nitrogen sources in the culture medium. the presence of ammonium sulfate resulted in a greater accumulation of bioactive compounds compared with the organic ones. this finding was also confirmed by the low values of the ascertained ec(50) and minimum inhibitory concentration (mics). among the organic sources, peptone followed by corn extract ... | 2012 | 22450678 |
| transcriptional and enzymatic profiling of pleurotus ostreatus laccase genes in submerged and solid-state fermentation cultures. | the genome of the white rot basidiomycete pleurotus ostreatus includes 12 phenol oxidase (laccase) genes. in this study, we examined their expression profiles in different fungal strains under different culture conditions (submerged and solid cultures) and in the presence of a wheat straw extract, which was used as an inducer of the laccase gene family. we used a reverse transcription-quantitative pcr (rt-qpcr)-based approach and focused on determining the reaction parameters (in particular, the ... | 2012 | 22467498 |
| anti-leukemic and immunomodulatory effects of fungal metabolites of pleurotus pulmonarius and pleurotus ostreatus on benzene-induced leukemia in wister rats. | the use of natural bioactive compounds in conventional chemotherapy is a new direction in cancer treatment that is gaining more research attention recently. bioactive polysaccharides and polysaccharide-protein complexes from some fungi (edible mushrooms) have been identified as sources of effective and non-toxic antineoplastic agents. selected oyster mushrooms (pleurotus pulmonarius and p. ostreatus being local [nigeria] and exotic strains, respectively) were cultured on a novel medium of yeast ... | 2012 | 22479280 |
| biodegradation and detoxification of olive mill wastewater by selected strains of the mushroom genera ganoderma and pleurotus. | thirty-nine white-rot fungi belonging to nine species of agaricomycotina (basidiomycota) were initially screened for their ability to decrease olive-mill wastewater (omw) phenolics. four strains of ganoderma australe, ganoderma carnosum, pleurotus eryngii and pleurotus ostreatus, were selected and further examined for key-aspects of the omw biodegradation process. fungal growth in omw-containing batch cultures resulted in significant decolorization (by 40-46% and 60-65% for ganoderma and pleurot ... | 2012 | 22480939 |
| gastroprotective activities of a polysaccharide from the fruiting bodies of pleurotus ostreatus in rats. | in this study, a water-soluble polysaccharide (popw) was successfully purified and identified from the fruiting bodies of pleurotus ostreatus, with a molecular weight of 2.3×10(4)da. popw contained 97.1% total sugar, 0.3% uronic acid and 0.2% protein. gas chromatography (gc) analysis suggested that popw was composed of glc (52.3%), gal (25.8%), man (10.0%), rha (6.1%), and ara (5.2%). animal experiments showed that oral administration with popw significantly inhibited acetic acid-induced gastric ... | 2012 | 22484446 |
| characterization of laccase isoforms produced by pleurotus ostreatus in solid state fermentation of sugarcane bagasse. | laccases are oxidative enzymes linked to biological degradation of lignin. the aim of this work was to evaluate the effect of inducers and different concentrations of nitrogen on production level of total laccase activity and pattern of laccase isoforms, produced in solid state fermentation of sugarcane bagasse by a selected strain of pleurotus ostreatus. the addition of yeast extract 5 g/l, copper sulfate 150 μm and ferulic acid 2 mm provided highest enzymatic activity (167 u/g) and zymograms i ... | 2012 | 22487128 |
| screening of medicinal higher basidiomycetes mushrooms from turkey for lovastatin production. | as a first attempt, a study was carried out to test for lovastatin production ability in local higher basidiomycetes mushroom isolates from turkey. an extended screening was performed for lovastatin production in yeast lactose agar medium, among a total of 136 macrofungi isolates from the basidiomycetes culture collection of eskisehir osmangazi university. lovastatin production was evaluated by disc diffusion method and was also confirmed by tlc and hplc. only six isolates were found to be lovas ... | 2012 | 22506575 |
| biodegradation of pcbs by ligninolytic fungi and characterization of the degradation products. | the aim of the present study was to compare the degrading capabilities of eight ligninolytic fungal representatives towards a technical mixture of polychlorinated biphenyls (delor 103). axenic cultures of the fungi, either in complex or n-limited liquid media, were spiked with the technical mixture of delor 103. all of the fungal strains were able to degrade the pollutant significantly after 6weeks of incubation in both media. outstanding results were achieved by the treatment with pleurotus ost ... | 2012 | 22546633 |
| the mitochondrial genome of moniliophthora roreri, the frosty pod rot pathogen of cacao. | in this study, we report the sequence of the mitochondrial (mt) genome of the basidiomycete fungus moniliophthora roreri, which is the etiologic agent of frosty pod rot of cacao (theobroma cacao l.). we also compare it to the mtdna from the closely-related species moniliophthora perniciosa, which causes witches' broom disease of cacao. the 94 kb mtdna genome of m. roreri has a circular topology and codes for the typical 14 mt genes involved in oxidative phosphorylation. it also codes for both rr ... | 2012 | 22559916 |
| raw and fungal-treated olive-mill wastewater effects on selected parameters of lettuce (lactuca sativa l.) growth--the role of proline. | olive-mill wastewater (omw) constitutes a major agricultural waste stream for which disposal is associated with significant environmental repercussions. no data are available on the effects of biotreated omw and of the protective role of exogenously provided proline on plant physiology. in the present study, omw was administered, either raw or previously treated by the white-rot fungus pleurotus ostreatus, with or without proline amendment, to lettuce plants growing in sterilized sand. biotreate ... | 2012 | 22560036 |
| isolation of new pseudomonas tolaasii bacteriophages and genomic investigation of the lytic phage bf7. | sixteen lytic bacteriophages that infect pseudomonas tolaasii lmg 2342(t) were isolated from smashed sporocarps of oyster mushroom (pleurotus ostreatus) showing necrotic symptoms. on the basis of the host range investigation of the phages, they have wide infection abilities against the genus pseudomonas, mainly in the case of phages bf3, bf7, bf10, and bf15. molecular investigations have revealed that they all have dsdna genomes about 40 kbp in size. identical restriction patterns resulting from ... | 2012 | 22568623 |
| biodecontamination of aqueous substrates from bisphenol a by ligninolytic fungi. | bisphenol a (bpa) is an endocrine disruptor compound of health concern in natural systems. in this study, bpa removal from solid and aqueous matrices by ligninolytic fungi was investigated. three white rot fungi, trametes versicolor (tra), stereum hirsutum (ste) and pleurotus ostreatus (ple) were evaluated for their capacity to remove bpa added at concentrations of 4.6 and 46 mg l(-1) from potato dextrose agar (pda) growth medium and at 4.6 mg l(-1) from aqueous solutions. further, the inhibitio ... | 2012 | 22571528 |
| hydrophobin vmh2-glucose complexes self-assemble in nanometric biofilms. | hydrophobins are small proteins secreted by fungi, which self-assemble into amphipathic membranes at air-liquid or liquid-solid interfaces. the physical and chemical properties of some hydrophobins, both in solution and as a biofilm, are affected by poly or oligosaccharides. we have studied the interaction between glucose and the hydrophobin vmh2 from pleurotus ostreatus by spectroscopic ellipsometry (se), atomic force microscopy (afm) and water contact angle (wca). we have found that vmh2-gluco ... | 2012 | 22572031 |
| mushroom polysaccharides and lipids synthesized in liquid agitated and static cultures. part i: screening various mushroom species. | the effect of four synthetic media containing glucose (initial concentration 30 g l(-1)) on mycelial growth, exopolysaccharides (eps) and cellular lipids production was examined in 11 mushroom species after 12 and 16 days of culture in static- and shake-flasks. fatty acid analysis of cellular lipids produced was also performed. agitation had a positive effect on biomass production, glucose consumption and lipid biosynthesis. media that favoured the production of biomass were not suitable for eps ... | 2012 | 22573010 |
| effect of incorporation of mushroom (pleurotus sajor-caju) powder on quality characteristics of papad (indian snack food). | papad is familiarly known as an indian food adjunct or snack food. in this study, attempts have been made to increase the protein, minerals and crude fibre content of the papad with incorporation of pleurotus sajor-caju powder to develop a novel snack food. mushroom powder was added in different proportions with other ingredients of the papad and the prepared papad was subjected to physicochemical and sensorial analyses. mushrooms pretreated with 1% potassium metabisulphite followed by whey trea ... | 2012 | 22574961 |
| some macronutrient content in mycelia and culture broth of medicinal mushrooms cultivated on amaranth flour. | the content of proteins, lipids, and amino and fatty acids was investigated in mycelium and culture broth of medicinal mushrooms cordyceps sinensis, pleurotus ostreatus, and schizophyllum commune. seven essential amino acids were present in the proteins of all mushroom samples, with aspartic (6.34%-14.29%) and glutamic (15.12%-17.51%) acids predominating in culture mycelium and glutamic acid (16.3%-19.1%) in culture broth. lipids in the mycelium of species c. sinensis, p. ostreatus, and sch. com ... | 2012 | 22577978 |
| characterization and in vitro antioxidant activities of polysaccharides from pleurotus ostreatus. | two polysaccharide fractions (pspo-1a and pspo-4a) were isolated from the fruiting bodies of pleurotus ostreatus using ethanol precipitation, anion-exchange chromatography and gel permeation chromatography. both fractions were heteropolysaccharide containing protein and uronic acid. pspo-1a was composed of mannose, glucose, galactose, xylose and rhamnose with a molar ratio of 2.47:0.91:1.00:1.66:3.87. pspo-4a was composed of only three monosaccharides: rhamnose, mannose and galactose with a mola ... | 2012 | 22579737 |
| the cancer preventive effects of edible mushrooms. | an increasing body of scientific literature suggests that dietary components may exert cancer preventive effects. tea, soy, cruciferous vegetables and other foods have been investigated for their cancer preventive potential. some non-edible mushrooms like reishi (ganoderma lucidum) have a history use, both alone and in conjunction with standard therapies, for the treatment of various diseases including cancer in some cultures. they have shown efficacy in a number of scientific studies. by compar ... | 2012 | 22583406 |
| biological removal of azo and triphenylmethane dyes and toxicity of process by-products. | increasing environmental pollution is connected with broad applications of dyes and imperfection of dyeing technology. decolourization of triphenylmethane brilliant green and disazo evans blue by bacterial and fungal strains and toxicity (phyto- and zootoxicity) of degradation by-products were investigated. influence of incubation method on dyes removal was evaluated (static, semi-static, shaken). dead biomass was used for sorption estimation. toxicity of treated dyes was measured to estimate po ... | 2011 | 22593606 |
| an improved sequence-aided t-rflp analysis of bacterial succession during oyster mushroom substrate preparation. | while oyster mushroom (pleurotus spp.) is one of the most popular cultivated edible mushrooms, there is scanty information about the microbial community taking part in mushroom substrate production. in this study, an improved sequence-aided terminal restriction fragment length polymorphism (t-rflp) was used to identify and (semi-)quantify the dominant bacteria of oyster mushroom substrate preparation. the main features of the improved t-rflp data analysis were the alignment of chromatograms with ... | 2012 | 22614940 |
| predominance of a versatile-peroxidase-encoding gene, mnp4, as demonstrated by gene replacement via a gene targeting system for pleurotus ostreatus. | pleurotus ostreatus (the oyster mushroom) and other white rot filamentous basidiomycetes are key players in the global carbon cycle. p. ostreatus is also a commercially important edible fungus with medicinal properties and is important for biotechnological and environmental applications. efficient gene targeting via homologous recombination (hr) is a fundamental tool for facilitating comprehensive gene function studies. since the natural hr frequency in pleurotus transformations is low (2.3%), t ... | 2012 | 22636004 |
| antioxidant and antitumor activities of selenium- and zinc-enriched oyster mushroom in mice. | selenium and zinc are well-known essential trace elements with potent biological functions. however, the possible health benefits of the combined administration of dietary selenium and zinc have not been studied extensively. in this study, we prepared selenium- and zinc-enriched mushrooms (szms) containing increased levels of selenium and zinc. the effects of szms on antioxidant and antitumor activities were evaluated. mice were fed with either a control diet or a diet supplemented with szms or ... | 2012 | 22639385 |
| rapid strain classification and taxa delimitation within the edible mushroom genus pleurotus through the use of diffuse reflectance infrared fourier transform (drift) spectroscopy. | fourier transform infrared (ft-ir) spectroscopy has been successfully applied for the identification of bacteria and yeasts, but only to a limited extent for discriminating specific groups of filamentous fungi. in the frame of this study, 73 strains - from different associated hosts/substrates and geographic regions - representing 16 taxa of the edible mushroom genus pleurotus (basidiomycota, agaricales) were examined through the use of diffuse reflectance infrared fourier transform (drift) spec ... | 2012 | 22658316 |
| antioxidant activities and total phenolic content of aqueous extract of pleurotus ostreatus (cultivated oyster mushroom). | pleurotus ostreatus better known as oyster mushroom is widely cultivated and consumed as food in malaysia. the present study aims to assess the antioxidative potential and total phenolic content of p. ostreatus aqueous extract. the antioxidant activities were evaluated against dpph and abts radical-scavenging activity, ferric-reducing antioxidant power (frap) and β-carotene-linoleate bleaching assay, and the folin-ciocalteu method for total phenolic content (tpc). the dpph and abts radical-scave ... | 2010 | 22691933 |
| curing viruses in pleurotus ostreatus by growth on a limited nutrient medium containing camp and rifamycin. | oyster mushroom spherical virus (omsv) and oyster mushroom isometric virus (omiv) are the causative agents of a fruiting body deformation disease in the edible mushroom pleurotus ostreatus. the curing of these mycoviruses was facilitated by a serial transfer of infected mycelia onto a limited nutrient medium containing 1mm of camp and 75 μg/ml of rifamycin (camp-rifamycin plate). the mycelia were grown on camp-rifamycin plates for 5 successive passages. elisa and rt-pcr showed that the amount of ... | 2012 | 22705083 |
| nutritional values and antioxidant potential of some edible mushrooms of kashmir valley. | mushrooms are considered rich in proteins, carbohydrates and other nutrients. the present study was carried out to evaluate some edible mushrooms of kashmir valley for their protein, carbohydrate and lipid contents. the highest protein content was found in boletus edulis (2.20g) followed by agaricus bisporus (1.80g), pleurotus ostreatus (1.68g), morchella esculenta (1.62g) and pleurotus sajor caju (1.6g). carbohydrate content also showed variation in all the five tested edible mushroom species, ... | 2012 | 22713951 |