| [moulds of bakery dusts (author's transl)]. | a total of 260 samples from bakery dusts were investigated. the samples were taken in the great part with the sedimentation-method. a large concentration of moulds was found in the meal-room. the fungal flora was here charcterized by species of rhizopus nigricans, mucor and circinella. with a new volumetric sampler a total quantity of 8 680 fungus spores of particles in 1 m3 was registrated. by a re-examination we found 4473. in the baker's rooms besides moulds (aspergillus, penicillium etc.) th ... | 1977 | 558701 |
| the microbial ecology of soybean soaking for tempe production. | soybeans soaked in tap water for 24 to 36 h at 20, 30 or 37 degrees c underwent a natural fermentation that was characterized by the growth of microorganisms to 10(8)-10(10) cfu/ml (depending on temperature) and a reduction of ph from 6.5 to 4.5. lactobacillus casei, streptococcus faecium, staphylococcus epidermidis and streptococcus dysgalactiae dominated the fermentation but, significant contributions were also made by klebsiella pneumoniae, klebsiella ozaenae, enterobacter cloacae, enterobact ... | 1989 | 2518226 |
| d-arabitol production by endomycopsis burtonii in sugarcane juice media. | | 1972 | 5070708 |
| identification of yeast strains isolated from marcha in sikkim, a microbial starter for amylolytic fermentation. | marcha or murcha is a traditional amylolytic starter used to produce sweet-sour alcoholic drinks, commonly called jaanr in the himalayan regions of india, nepal, bhutan, and tibet (china). the aim of this study was to examine the microflora of marcha collected from sikkim in india, focusing on yeast flora and their roles. twenty yeast strains were isolated from six samples of marcha and identified by genetic and phenotypic methods. they were first classified into four groups (group i, ii, iii, a ... | 2005 | 15734562 |
| dynamics and characterization of yeasts during ripening of typical italian dry-cured ham. | the evolution of the yeast population during manufacturing and ripening of dry-cured parma ham was investigated. contamination levels ranged from 10(5) to 10(7) cfu/g on muscle surface, 10(4) to 10(6) cfu/g on covering fat and exceeded 10(7) cfu/g on spreadable fat mince ("sugna"). two hundred and sixty one yeast isolates underwent identification test, showing that the predominant species of yeast population during the whole maturing process were debaryomyces hansenii, candida zeylanoides, debar ... | 2007 | 17418308 |
| biodiversity and phytase capacity of yeasts isolated from tanzanian togwa. | the focus of the present investigation was on the tanzanian fermented food togwa as a source for dietary iron and zinc, and the potential for mineral availability improvements using selected yeasts. to establish the content of target minerals and main inhibitor for intestinal uptake, iron and zinc as well as the mineral chelating phytic acid, (ip(6) or phytate) were determined in naturally fermented togwa. yeasts were isolated from sorghum, maize and cassava based togwa, and identified by sequen ... | 2010 | 19906458 |
| microbiological studies of ethnic meat products of the eastern himalayas. | native microorganisms from some ethnic meat products of the eastern himalayas such as lang kargyong, yak kargyong, faak kargyong, lang satchu, yak satchu and suka ko masu were isolated and characterized. the bacterial isolates included lactobacillus sake, lactobacillus curvatus, lactobacillus divergens, lactobacillus carnis, lactobacillus sanfrancisco, lactobacillus plantarum, lactobacillus casei, lactobacillus brevis, enterococcus faecium, leuconostoc mesenteroides, pediococcus pentosaceous, ba ... | 2010 | 20416835 |
| molecular cloning and characterization of an alpha-amylase from pichia burtonii 15-1. | an alpha-amylase secreted by pichia burtonii 15-1 isolated from a traditional starter murcha of nepal, named pichia burtonii alpha-amylase (pba), was studied. the gene was cloned and its nucleotide sequence was determined. pba was deduced to consist of 494 amino acid residues. it shared certain degrees of amino acid sequence identity with other homologous proteins: 60% with schwanniomyces occidentalis alpha-amylase, 58% with saccharomycopsis sp. alpha-amylase, and 47% with taka-amylase a from as ... | 2007 | 18071262 |
| the effects of a naturally produced benzoquinone on microbes common to flour. | many species of insects are known to produce and secrete benzoquinone derivatives. these compounds are usually defined as "defense chemicals." however, in many cases, it has not been determined what the chemicals are meant to defend against. tribolium beetles produce up to three benzoquinones, but their specific function is not known. in this experiment, one of the derivatives, methyl-1,4-benzoquinone (mbq) was tested for its effectiveness for one of its purported functions as an antimicrobial. ... | 2007 | 17473960 |
| purification and characterization of an alpha-amylase of pichia burtonii isolated from the traditional starter "murcha" in nepal. | among more than 20 yeast strains isolated from the traditional starter "murcha" in nepal, we characterized a yeast that might be involved in saccharification. this strain, identified as pichia burtonii, produced an extracellular amylolytic enzyme when cultured in the presence of starch in the medium. since no amylase secreted by p. burtonii has yet been reported, we purified the enzyme and determined its n-terminal amino acid sequence. together with the results of a hydrolyzing activity assay to ... | 2006 | 17151461 |
| production of higher alcohols during indonesian tapé ketan fermentation. | a study was made of the higher alcohols (fusel oils) produced during the indonesian tapé ketan fermentation using amylomyces rouxii as the principal mold, alone or in combination with yeasts belonging to genera commonly found in the tapé ketan fermentation (endomycopsis, candida, and hansenula). total fusel oils increased with length of fermentation. fusel oils detected in the product distillate included isobutanol and isoamyl and active amyl alcohols. no n-propanol was detected. isobutanol and ... | 1979 | 16345385 |
| indonesian tapé ketan fermentation. | indonesian tapé ketan is a fermentation in which a mold, amylomyces rouxii calmette (chlamydomucor oryzae went and prinsen geerligs), in combination with one or more yeasts such as endomycopsis burtonii converts steamed rice to a sweet-sour, slightly alcoholic paste. a study was made to determine the biochemical changes that occur in the substrate during fermentation. it was found that the product was ready for consumption after fermentation at 30 degrees c for 36 to 48 h. a. rouxii used about 3 ... | 1977 | 16345243 |
| candida khmerensis sp. nov., a novel cation-tolerant yeast isolated from dry salted shrimp and sewage in cambodia. | two cation-tolerant yeasts with powdered colonies, k28-3-2t and k26-1-4, were isolated from dry salted shrimp and sewage, respectively, in siem reap province, cambodia. the d1/d2 sequences of the 26s rdna data showed that the two isolates were conspecific and related to the pichia burtonii and candida fennica. two isolates were examined by a polyphasic taxonomic approach, including molecular phylogenetic analysis, morphological, physiological and biochemical tests, dna hybridization and msp-pcr ... | 2005 | 16205031 |
| mold-inhibitory activity of different yeast species during airtight storage of wheat grain. | the yeast pichia anomala j121 inhibits spoilage by penicillium roqueforti in laboratory and pilot studies with high-moisture wheat in malfunctioning airtight storage. we tested the biocontrol ability of an additional 57 yeast species in a grain mini silo system. most yeast species grew to cfu levels comparable to that of p. anomala j121 after 14 days of incubation (>10(6) cfu g(-1)). of the 58 species, 38 (63 strains) had no mold-inhibitory effects (pen. roqueforti levels >10(5) cfu g(-1)). amon ... | 2005 | 15691742 |
| a phylogenetic study of ubiquinone q-8 species of the genera candida, pichia, and citeromyces based on 18s ribosomal dna sequence divergence. | to clarify phylogenetic relationships among species of the anamorphic ascomycetous genus candida with ubiquinone q-8, we determined complete sequences of 18s ribosomal rna genes (18s rdnas) from the type strains of 20 species of the genus candida and 7 of the teleomorphic ascomycetous genera pichia and citeromyces, which have q-8 as the major ubiquinone. q-8-forming candida species were divided into six clusters and were phylogenetically distant from a group of candida species that included the ... | 1999 | 12501366 |
| the effects of fungal competition on colonization of barley grain by fusarium sporotrichioides on t-2 toxin formation. | colonization of barley grain by fusarium sporotrichioides and t-2 toxin formation in the presence of aspergillus flavus, penicillium verrucosum, and hyphopichia burtonii were studied at 20 and 30 degrees c and at 0.97, 0.95 or 0.90 aw during 3 weeks' incubation. colonization of grain was assessed from frequency of seed infection and numbers of colony forming units (cfu) produced and by observation of hyphal extension on the grain surface from germinating spores while concentrations of t-2 toxin ... | 1996 | 8950114 |
| yeasts and yeast-like organisms isolated from fish-pond waters. | fifteen genera and 29 yeast species were found in the water of three fish-ponds located in the area of the lowland zahorie (slovakia). the fish-ponds were sampled in summer and autumn. aureobasidium, sporobolomyces, candida, and cryptococcus species occurred the most frequently. the composition of yeast species was more heterogeneous in summer than in autumn, but the number of yeasts observed in autumn was 5.5 times higher than those isolated in summer. some species of the genus candida, hyphopi ... | 1995 | 8906934 |
| killer activity of yeasts isolated from the water environment. | the killer activity of 46 strains belonging to 12 yeast and yeast-like species isolated from water or sediment samples was studied. only two strains of the genus cryptococcus did not show killer activity. killer activity of yeast-like species aureobasidium pullulans, hyphopichia burtonii and geotrichum candidum, and yeast species candida krusei and candida lambica was low. sporobolomyces salmonicolor, cryptococcus laurentii and cryptococcus albidus had better activity against basidiomycetous tha ... | 1995 | 7585352 |
| stimulation by hyphopichia burtonii and bacillus amyloliquefaciens of aflatoxin production by aspergillus flavus in irradiated maize and rice grains. | aspergillus flavus was grown on maize and rice extract agars and on irradiated viable cracked maize and rice grains, either in pure culture or in dual culture with wild strains of either hyphopichia burtonii or bacillus amyloliquefaciens. aflatoxin production by a. flavus and its growth and interactions with the other microorganisms were studied at three water activities (aw) (0.98, 0.95, and 0.90) and two temperatures (25 and 16 degrees c). both h. burtonii and b. amyloliquefaciens markedly sti ... | 1987 | 3111368 |
| [study of alpha-amylase of the cell wall of pichia burtonii boidin]. | | 1978 | 27904 |
| [regulation of alpha-amylase biosynthesis in pichia burtonii b]. | the synthesis of amylolytic enzymes by pichia burtonii strain cbs 6141 requires the presence of etarch, maltose, and saccharose. glucose exerts a strong repression which completely inhibited snzyme induction. | 1978 | 308745 |
| comparison of microbial diversity of korean commercial makgeolli showing high β-glucan content and high antihypertensive activity, respectively. | we measured physiological functionalities, including antihypertensive angiotensin i-converting enzyme inhibitory activity and immun-stimulating β-glucan content for sixty kinds of makgeolli that is commercially available from the market. as a result, we selected r-12 commercial raw makgeolli, with a high content of immuno-stimulating β-glucan, and r-14 commercial raw makgeolli, exhibiting high antihypertensive activity. due to the similarities in their overall physicochemical properties and raw ... | 2012 | 22870058 |
| effect of ethanol on growth of chrysonilia sitophila ('the red bread mould') and hyphopichia burtonii ('the chalky mould') in sliced bread. | contamination of food industrial environments and recontamination of finished products by chrysonilia sitophila and hyphopichia burtonii have long represented serious problems for the bakery industries. as one of the most common ways to slow down or avoid fungal spoilage on bakery products is the use of ethanol, in the present work the effect of this substance has been assessed on growth of two of the most frequently occurring associated moulds, c. sitophila and h. burtonii, by means of tests on ... | 2013 | 23772878 |
| cutaneous mycosis in a barbastelle bat (barbastella barbastellus) caused by hyphopichia burtonii. | a rare barbastelle bat (barbastella barbastellus) died shortly after being found in emaciated condition in devon, england. the skin over the muzzle and face was grossly thickened, crusty, and in places was sloughing and ulcerated. there were numerous nodules up to 3 mm in diameter on both wings and ear pinnae. histologically, multiple foci of epidermal hyperplasia, hyperkeratosis, and crateriform erosions containing masses of fungal spores and septate hyphae were found in the wing. epidermal hyp ... | 2013 | 23794016 |
| a model for the effect of ph on the growth of chalk yeasts. | hyphopichia burtonii, pichia anomala, and saccharomycopsis fibuligera were isolated from spoiled packaged sliced bread. these chalk yeasts were characterized by a wide range of ph for which growth was almost optimum. thus, the curve growth vs ph exhibited plateau and sharp profiles close to the minimum and the maximum ph. this study described a chalk yeast model (cym) for the effect of ph derived from a new germination model for fungi (dantigny, p., nanguy, s., p.-m., judet-correia, d., and bens ... | 2014 | 24995847 |
| validation of a predictive model for the growth of chalk yeasts on bread. | the present study focused on the effects of temperature, t, and water activity, aw, on the growth of hyphopichia burtonii, pichia anomala, and saccharomycopsis fibuligera on sabouraud agar medium. cardinal values were estimated by means of cardinal models with inflection. all the yeasts were xerophilic, and they exhibited growth at 0.85 aw. the combined effects of t, aw, and ph on the growth of these species were described by the gamma-concept and validated on bread in the range of 15-25 °c, 0.9 ... | 2015 | 25847185 |
| effects of innovative and conventional sanitizing treatments on the reduction of saccharomycopsis fibuligera defects on industrial durum wheat bread. | wickerhamomyces anomalus, hyphopichia burtonii and saccharomycopsis fibuligera are spoilage yeasts causing chalk mold defects on sliced bread packaged under modified atmosphere. the first objective of this study, carried out in a bread-making company for two consecutive years, was to genetically identify yeasts isolated from spoiled sliced bread in modified atmosphere packaging (map) and to determine the dominant species among identified strains. the second objective was to evaluate the effects ... | 2016 | 27438909 |
| assessment of the yeast species composition of cocoa bean fermentations in different cocoa-producing regions using denaturing gradient gel electrophoresis. | the yeast species composition of 12 cocoa bean fermentations carried out in brazil, ecuador, ivory coast and malaysia was investigated culture-independently. denaturing gradient gel electrophoresis of 26s rrna gene fragments, obtained through polymerase chain reaction with universal eukaryotic primers, was carried out with two different commercial apparatus (the dcode and cbs systems). in general, this molecular method allowed a rapid monitoring of the yeast species prevailing during fermentatio ... | 2011 | 22093683 |
| molecular and morphological identification of fungal species isolated from bealmijang meju. | bealmijang is a short-term aged paste made from meju, which is a brick of fermented soybeans and other ingredients. different types of bealmijang are available depending on the geographic region or ingredients used. however, no study has clarified the microbial diversity of these types. we identified 17 and 14 fungal species from black soybean meju (bsm) and buckwheat meju (bwm), respectively, on the basis of morphology, culture characteristics, and internal transcribed spacer and beta-tubulin g ... | 2011 | 22210613 |
| identification and characterization of yeasts causing chalk mould defects on par-baked bread. | pichia anomala, hyphopichia burtonii and saccharomycopsis fibuligera are spoilage yeasts causing chalk mould defects on par-baked breads packaged under modified atmosphere. the first objective of this study was to identify yeasts isolated from spoiled par-baked breads by means of a rapd protocol and to determine the dominant spoilers amongst identified strains. the second objective was to determine the effects of water activity (a(w)) and ph value on the growth rates and lag phase durations of p ... | 2011 | 21569947 |
| aspergillus flavus colonization and aflatoxin b(1) formation in barley grain during interaction with other fungi. | colonization of barley grain by aspergillus flavus and formation of aflatoxin b(1) in the presence of penicillium verrucosum, fusarium sporotrichioides, and hyphopichia burtonii were studied over a three-week period in all combinations of 20 or 30 °c and 0.97, 0.95 or 0.90 a(w). grain colonization was assessed initially by observing hyphal extension on the grain surface, using scanning electron microscopy, and then from the proportion of seeds infected and numbers of colony forming units (cfu) f ... | 1996 | 20882457 |
| re-examination of strains formerly assigned to hyphopichia burtonii, the phylogeny of the genus hyphopichia, and the description of hyphopichia pseudoburtonii sp. nov. | on the basis of the nucleotide divergence in the internal transcribed spacer (its) domain of the rrna gene and the d1/d2 domain of the 26s rrna gene, species of the genus hyphopichia can be divided into different phylogenetic groups. in this study, three distinct phylogenetic clusters as well as a novel species, hyphopichia pseudoburtonii sp. nov. with type strain cbs 2455(t) (=jcm 16346(t)), are introduced. mating studies indicate that strains belonging to hyphopichia pseudoburtonii are heterot ... | 2010 | 19965989 |