Publications

TitleAbstractYear
Filter
PMID(sorted ascending)
Filter
the antibacterial activity of extracts of nine plant species with good activity against escherichia coli against five other bacteria and cytotoxicity of extracts.the development of antibiotic resistant bacteria stems from a number of factors, including inappropriate use of antibiotics in human and animal health and their prolonged use as growth promoters at sub-clinical doses in poultry and livestock production. we were interested in investigating plants that could be useful in protecting humans or animals against diarrhoea. we decided to work on extracts of nine plant species with good activity against escherichia coli based on earlier work in the phyto ...201728241818
should we care about transmission of infectious bacterial agents through serum handling?immunological assays are valuable diagnostic tools to detect infections due to most of bacterial microorganisms. however, the question is how much safe are the common serum samples used as sources of antibodies in these assays? here, we experimentally followed the issue. 10-fold serial dilutions of two gram-positive, staphylococcus aureus and bacillus cereus, and one gram-negative bacteria, escherichia coli, were prepared and spiked into freshly taken blood samples of human and four animal speci ...201728242424
impact of endophytic colonization patterns on zamioculcas zamiifolia stress response and in regulating ros, tryptophan and iaa levels under airborne formaldehyde and formaldehyde-contaminated soil conditions.deeper understanding of plant-endophyte interactions under abiotic stress would provide new insights into phytoprotection and phytoremediation enhancement. many studies have investigated the positive role of plant-endophyte interactions in providing protection to the plant against pollutant stress through auxin (indole-3-acetic acid (iaa)) production. however, little is known about the impact of endophytic colonization patterns on plant stress response in relation to reactive oxygen species (ros ...201728246037
microbiological quality of raw milk attributable to prolonged refrigeration conditions.refrigerated storage of raw milk is a prerequisite in dairy industry. however, temperature abused conditions in the farming and processing environments can significantly affect the microbiological quality of raw milk. thus, the present study investigated the effect of different refrigeration conditions such as 2, 4, 6, 8, 10 and 12 °c on microbiological quality of raw milk from three different dairy farms with significantly different initial microbial counts. the bacterial counts (bc), protease ...201728252354
the bacterial sequential markov coalescent.bacteria can exchange and acquire new genetic material from other organisms directly and via the environment. this process, known as bacterial recombination, has a strong impact on the evolution of bacteria, for example leading to the spread of antibiotic resistance across clades and species, and to the avoidance of clonal interference. recombination hinders phylogenetic and transmission inference because it creates patterns of substitutions (homoplasies) inconsistent with the hypothesis of a si ...201728258183
trimethylamine removal by plant capsule of sansevieria kirkii in combination with bacillus cereus en1.trimethylamine (tma) contamination produces a strong "fishy" odor and can cause pathological changes in humans. by screening native microorganisms from sansevieria kirkii exposed to 100 ppm tma, it was shown that endophytic bacteria number 1 (en1) and number 2 (en2) have a higher tma tolerance and removal capacity than other bacteria species in a closed system. in addition, en1 and en2 demonstrated the ability to produce high quantities of indole-3-acetic acid (iaa) and use 1-aminocyclopropane-1 ...201728258430
antibacterial activity and synergistic antibacterial potential of biosynthesized silver nanoparticles against foodborne pathogenic bacteria along with its anticandidal and antioxidant effects.silver nanoparticles plays a vital role in the development of new antimicrobial substances against a number of pathogenic microorganisms. these nanoparticles due to their smaller size could be very effective as they can improve the antibacterial activity through lysis of bacterial cell wall. green synthesis of metal nanoparticles using various plants and plant products has recently been successfully accomplished. however, few studies have investigated the use of industrial waste materials in nan ...201728261161
complete genome sequences of bacillus phages dirtybetty and kida.we report here the genome sequences of two bacteriophages of the bacillus cereus group, dirtybetty and kida. these bacteriophages are double-stranded dna-containing myoviridae isolated from soil samples using bacillus thuringiensis subsp. kurstaki as their host bacteria.201728280018
genetic and genomic diversity of nheabc locus from bacillus strains.non-hemolytic enterotoxin (nhe), a tri-partite, proteinaceous toxin encoded by contiguous nhea, nheb and nhec genes of bacillus cereus sensu lato (b. cereus s.l.), is considered to be associated with the foodborne diarrheic syndrome. however, b. cereus s.l. includes a number of closely related strains, and the occurrence of nhe among them, and other members of bacillus is unclear. consequently, we aimed to determine the distribution and evolution of nhe within bacillus by confirming the presence ...201728283680
prevalence, virulence factor genes and antibiotic resistance of bacillus cereus sensu lato isolated from dairy farms and traditional dairy products.b. cereus are of particular interest in food safety and public health because of their capacity to cause food spoilage and disease through the production of various toxins. the aim of this study was to determine the prevalence, virulence factor genes and antibiotic resistance profile of b. cereus sensu lato isolated from cattle grazing soils and dairy products in ghana. a total of 114 samples made up of 25 soil collected from cattle grazing farm land, 30 raw milk, 28 nunu (yoghurt-like product) ...201728288581
induced systemic resistance against botrytis cinerea by bacillus cereus ar156 through a ja/et- and npr1-dependent signaling pathway and activates pamp-triggered immunity in arabidopsis.induced resistance response is a potent and cost effective plant defense against pathogen attack. the effectiveness and underlying mechanisms of the suppressive ability by bacillus cereus ar156 to pseudomonas syringae pv. tomato dc3000 (pst dc3000) in arabidopsis has been investigated previously; however, the strength of induced systemic resistance (isr) activity against botrytis cinerea remains unknown. here, we show that root-drench application of ar156 significantly reduces disease incidence ...201728293243
a four-gene operon in bacillus cereus produces two rare spore-decorating sugars.bacterial glycan structures on cell surfaces are critical for cell-cell recognition and adhesion and in host-pathogen interactions. accordingly, unraveling the sugar composition of bacterial cell surfaces can shed light on bacterial growth and pathogenesis. here, we found that two rare sugars with a 3-c-methyl-6-deoxy-hexose structure were linked to spore glycan in bacillus cereus atcc 14579 and atcc 10876. moreover, we identified a four-gene operon in b. cereus atcc 14579 that encodes proteins ...201728298443
chemical composition and biological properties of satureja avromanica maroofi.satureja avromanica is an indigenous plant which is frequently used as a spice in avraman-kurdistan region of iran. the present study aimed to investigate the chemical composition, antimicrobial and antioxidant properties of the s. avromanica. in addition, rosmarinic acid and total phenolic content of s. avromanica was assessed by spectrophotometric method and hptlc. the essential oil and methanolic extract were isolated by hydrodistillation and maceration methods, respectively. a total of 32 co ...201728298686
in vitro antibacterial, antifungal and antioxidant activities of eucalyptus spp. leaf extracts related to phenolic composition.the crude methanolic extracts from leaves of eucalyptus camaldulensis l., e. camaldulensis var obtusa and e. gomphocephala grown in egypt were investigated to explore their chemical composition as well as their antibacterial, antifungal and antioxidant activities. major phenolics found were ellagic acid, quercetin 3-o-rhamnoside, quercetin 3-o-b-d-glucuronide, caffeic acid and chlorogenic acid. the antioxidant activities were examined by the 2,2'-diphenypicrylhydrazyl (dpph) and β-carotene-linol ...201728299978
exploiting fruit byproducts for eco-friendly nanosynthesis: citrus × clementina peel extract mediated fabrication of silver nanoparticles with high efficacy against microbial pathogens and rat glial tumor c6 cells.process byproducts from the fruit industry may represent a cheap and reliable source of green reducing agents to be used in current bio-nanosynthesis. this study reports the use of orange (citrus × clementina) peel aqueous extract (ope) for one-pot green synthesis of silver nanoparticles (agnps) with high effectiveness against various microbial pathogens as well as rat glial tumor c6 cells. the effects of various operational parameters on the synthesis of agnps were systematically investigated. ...201728303540
development of a liquid chromatography-mass spectrometry based enzyme activity assay for phosphatidylcholine-specific phospholipase c.phosphatidylcholine (pc)-specific phospholipase c (pc-plc) hydrolyzes pc to generate the second messenger 1,2-diacylglycerol (dg) and phosphocholine. pc-plc plays pivotal roles in inflammation, carcinogenesis, tumor progression, atherogenesis, and subarachnoid hemorrhage. although the activity of pc-plc in mammalian tissues was discovered approximately 40 years ago, neither the protein nor its gene has been identified. in the present study, we developed a non-radioactive enzyme activity assay fo ...201728315318
structure and function of the bacterial communities during rhizoremediation of hexachlorobenzene in constructed wetlands.vertical flow constructed wetlands (vf cws) are considered to be effective for treating organic pollutants. the rhizosphere of macrophytes such as phragmites sp., typha sp. serves as an active and dynamic zone for the microbial degradation of organic pollutants. however, it is still not clear how soil bacterial communities respond to macrophytes and pollutants during the process. for this purpose, the seedlings of phragmites australis and typha angustifolia were planted respectively in the vf cw ...201728316049
biofilm inhibition formation of clinical strains of pseudomonas aeruginosa mutans, photocatalytic activity of azo dye and gc-ms analysis of leaves of lagerstroemia speciosa.the investigation was conducted to analyse the bioactive compounds from the leaf extracts of l. speciosa by gc-ms. the extracts were screened for antibacterial and antibiofilm activities against potential clinical strains. the bioactive compounds from the leaves of l. speciosa were extracted by soxhlet continuous extraction method and their chemical composition was analysed by gas chromatography-mass spectroscopy (gc-ms). the antibacterial activity was evaluated against clinical strain like stap ...201728319869
identification of the lyso-form n-acyl intramolecular transferase in low-gc firmicutes.bacterial lipoproteins are embedded in the cell membrane of both gram-positive and gram-negative bacteria where they serve numerous functions central to cell envelope physiology. lipoproteins are tethered to the membrane by an n-acyl-s-(mono/di)-acyl-glyceryl-cysteine anchor that is variably acylated depending on genera. in several low-gc gram-positive firmicutes, a monoacyl-glyceryl-cysteine with an n-terminal fatty acid (known as the lyso form) has been reported, though how it is formed is unk ...201728320885
enhancement of ε-poly-l-lysine (ε-pl) production by a novel producer bacillus cereus using metabolic precursors and glucose feeding.epsilon poly-l-lysine (ε-pl) is a homo-biopolymer with approximately 25-30 l-lysine residues. it is a promising natural biopolymer widely used in food and pharmaceutical industry. the present work reports enhanced production of ε-pl with a novel producer bacillus cereus using amino acids and tca cycle intermediates in the fermentation medium. among the various amino acids and tca cycle intermediates tested 2 mm l-aspartic acid and 5 mm citric acid gave ε-pl yield of 145.5 and 230 mg/l, respectiv ...201528324535
cellulase-assisted extraction of polysaccharides from malva sylvestris: process optimization and potential functionalities.enzyme-assisted extraction process of the water-soluble malva sylvestris polysaccharides (msps) was optimized using response surface methodology (rsm). the highest yield (10.40%) of msps was achieved at 5.64% cellulase, 55.65°c temperature, 3.4h time, and 5.22 ph. three homogeneous polysaccharide fractions (msp-1, msp-2, msp-3) were purified by deae-cellulose and sephadex g-100 chromatography, which were composed of galactose, glucuronic acid, arabinose, rhamnose and mannose in different molar r ...201728327424
cytotoxicity, bactericidal, and antioxidant activity of sodium alginate hydrosols treated with direct electric current.the aim of the study was to investigate the effect of using direct electric current (dc) of 0, 200, and 400 ma for five minutes on the physiochemical properties, cytotoxicity, antibacterial, and antioxidant activity of sodium alginate hydrosols with different sodium chloride concentrations. the ph, oxidation-reduction potential (orp), electrical conductivity (ec), and available chlorine concentration (acc) were measured. the effect of sodium alginate hydrosols treated with dc on staphylococcus a ...201728327520
isolation and characterization of bacterial endophytes of curcuma longa l.fourteen endophytic bacterial isolates were isolated from the rhizome of curcuma longa l. were characterized on the basis of morphology, biochemical characteristics and 16s rrna gene sequence analysis. the isolates were identified to six strains namely bacillus cereus (ecl1), bacillus thuringiensis (ecl2), bacillus sp. (ecl3), bacillus pumilis (ecl4), pseudomonas putida (ecl5), and clavibacter michiganensis (ecl6). all the strains produced iaa and solubilized phosphate and only two strains produ ...201628330130
biodegradation of real petroleum wastewater by immobilized hyper phenol-tolerant strains of bacillus cereus in a fluidized bed bioreactor.microbial bioremediation of petroleum wastewater by phenol-degrading-bacteria holds promise in circumventing the issue of petroleum-spill related pollution. herein, biodegradation of petroleum wastewater samples collected from oil refinery site was carried out in a fluidized bed bioreactor by ca-alginate immobilized biomass of phenol-degrading strains of bacillus cereus (akg1 mtcc9817 and akg2 mtcc9818). degradation performance of the system was evaluated by measuring the changes in chemical oxy ...201628330209
in vitro cytotoxicity and antibacterial activity of silver-coated electrospun polycaprolactone/gelatine nanofibrous scaffolds.the development of nano-sized scaffolds with antibacterial properties that mimic the architecture of tissue is one of the challenges in tissue engineering. in this study, polycaprolactone (pcl) and pcl/gelatine (ge) (70:30) nanofibrous scaffolds were fabricated using a less toxic and common solvent, formic acid and an electrospinning technique. nanofibrous scaffolds were coated with silver (ag) in different concentrations of silver nitrate (agno3) aqueous solution (1.25, 2.5, 5, and 10 %) by usi ...201628330282
bio-prospecting of cuttle fish waste and cow dung for the production of fibrinolytic enzyme from bacillus cereus ind5 in solid state fermentation.the process parameters governing the production of fibrinolytic enzyme in solid state fermentation employing bacillus cereus ind5 and using cuttle fish waste and cow dung substrate were optimized. the ph value of the medium, moisture content, sucrose, casein and magnesium sulfate were considered for two-level full factorial design and ph, casein and magnesium sulfate were identified as the important factors for fibrinolytic enzyme production. central composite design was applied to investigate t ...201628330303
synthesis and biological evaluation of a new series of benzimidazole derivatives as antimicrobial, antiquorum-sensing and antitumor agents.new benzimidazole derivatives were synthesized and assessed for antimicrobial efficacy toward escherichia coli, bacillus cereus, staphylococcus aureus, candida albicans and aspergillus fumigatus 293. results indicated that compounds 3c and 3n have promising activity toward s. aureus, whereas 3i exhibited remarkable efficacy toward b. cereus. moreover, compound 3c was proved to be the most active antifungal analog toward c. albicans. on the other hand, 3n displayed the highest activity against a. ...201728334654
synthesis of sic/ag/cellulose nanocomposite and its antibacterial activity by reactive oxygen species generation.we describe the synthesis of nanocomposites, based on nanofibers of silicon carbide, silver nanoparticles, and cellulose. silver nanoparticle synthesis was achieved with chemical reduction using hydrazine by adding two different surfactants to obtain a nanocomposite with silver nanoparticles of different diameters. determination of antibacterial activity was based on respiration tests. enzymatic analysis indicates oxidative stress, and viability testing was conducted using an epifluorescence mic ...201628335299
the role of pili in bacillus cereus intraocular infection.bacterial endophthalmitis is a potentially blinding intraocular infection. the bacterium bacillus cereus causes a devastating form of this disease which progresses rapidly, resulting in significant inflammation and loss of vision within a few days. the outer surface of b. cereus incites the intraocular inflammatory response, likely through interactions with innate immune receptors such as tlrs. this study analyzed the role of b. cereus pili, adhesion appendages located on the bacterial surface, ...201728336259
biosorption of heavy metals from aqueous solution by bacteria isolated from contaminated soil.the study was carried out to analyze the heavy metals biosorption potential of bacteria isolated from electroplating industrial effluents contaminated soil. bacterial isolates were screened for their multi-metal biosorption potential against copper, nickel, lead and chromium. bacterial isolate cu4a showed maximum uptake of copper, nickel, lead and chromium in aqueous solution with biosorption efficiency as 87.16 %, 79.62%, 84.92% and 68.12%, respectively. the bacterial strain cu4a was identified ...201728337961
[bacillus cereus endocarditis and a probable cutaneous gateway].bacillus cereus is a ubiquitous telluric organism. b. cereus endocarditis is a rare condition seen mostly in prosthetic heart valves and among intravenous drug users. we report a new case of a patient without risk factors and with a good clinical outcome not requiring valve replacement.201728341191
fermentation of sarshir (kaymak) by lactic acid bacteria: antibacterial activity, antioxidant properties, lipid and protein oxidation and fatty acid profile.the antioxidant and antibacterial activity of fermented sarshir (traditional dairy food), with three probiotic lactobacillus plantarum strains (lp3, af1, and lu5) were investigated. the oxidative stability and lipid profile of non-fermented and fermented sarshir were compared, as well as radical scavenging activity, peroxide, anisidine, and carbonyl values (pv, anv, and cv, respectively).201728349539
nprr, a moonlighting quorum sensor shifting from a phosphatase activity to a transcriptional activator.regulation of biological functions requires factors (proteins, peptides or chemicals) able to sense and translate environmental conditions or any circumstances in order to modulate the transcription of a gene, the stability of a transcript or the activity of a protein. quorum sensing is a regulation mechanism connecting cell density to the physiological state of a single cell. in bacteria, quorum sensing coordinates virulence, cell fate and commitment to sporulation and other adaptation properti ...201628357327
a new anthraquinone and a new naphthoquinone from the whole plant of spermacoce latifolia.a phytochemical study on the whole plant of spermacoce latifolia led to the isolation of a new anthraquinone, 1,2,6-trihydroxy-5-methoxy-9,10-anthraquinone (1), and a new naphthoquinone, (2r)-6-hydroxy-7-methoxy-dehydroiso-α-lapachone (2), together with three known anthraquinones (3-5). their structures were established on the basis of detailed spectroscopic analysis, including one- and two-dimensional nmr, esi-ms, and hr-esi-ms techniques. all the compounds were isolated from s. latifolia for t ...201728357881
n-heterocyclic choline analogues based on 1,2,3,4-tetrahydro(iso)quinoline scaffold with anticancer and anti-infective dual action.pharmacological effects of biologically active "small molecules" can be improved by their targeted modification, which affects drug delivery and interaction with tumor cells and microorganisms. we aimed to evaluate anticancer and antimicrobial activity of lipid-like choline derivatives modified via simultaneous introduction of tetrahydro(iso)quinoline based pharmacophore system at nitrogen atom and long chain alkyl substituent at oxygen atom.201728364698
characterization of plasma membrane ceramides by super-resolution microscopy.the sphingolipid ceramide regulates cellular processes such as differentiation, proliferation, growth arrest, and apoptosis. ceramide-rich membrane areas promote structural changes within the plasma membrane that segregate membrane receptors and affect membrane curvature and vesicle formation, fusion, and trafficking. ceramides were labeled by immunocytochemistry to visualize their distribution on the plasma membrane of different cells with virtually molecular resolution by direct stochastic opt ...201728379629
terphenyl derivatives and drimane - phathalide/isoindolinones from hypoxylon fendleri bcc32408.the genus hypoxylon, a member of the family xylariaceae, has been known to produce significant secondary metabolites in terms of chemical diversity. moreover, the compounds isolated can also be used as chemotaxonomic characters for differentiation among the two sections, which are sect. annulata and sect. hypoxylon. in our continuing chemical screening programme for novel compounds, the crude extracts of h. fendleri bcc32408 gave significant chemical profiles in hplc analyses. thus, the chemical ...201728384525
genetic diversity and population structure of the bacillus cereus group bacteria from diverse marine environments.the phylogenetic diversity of marine bacteria belonged to the bacillus cereus group has not been well investigated. here, we present the genetic diversity and population structure of 71 bacteria from diverse marine environments, using a multilocus sequence typing (mlst) approach and the analyses of digital dna-dna hybridization (dddh) and average nucleotide identity (ani) based on some representative genomic sequences. the mlst analysis demonstrated that these isolates were highly diverse and a ...201728386130
production of polyhydroxyalkanoates (pha) using sludge from different wastewater treatment processes and the potential for medical and pharmaceutical applications.in this study, seven strains of bacteria with polyhydroxyalkanoates (pha)-producing ability (i.e., bacillus cereus, pseudomonas putida, bacillus pumilus, pseudomona-huttiensis, yersinia-frederiksenii, aeromonas ichthiosmia and sphingopyxis terrae) were isolated from various waste treatment plants in hong kong. simultaneous wastewater treatment and pha accumulation were successfully achieved in the bioreactors using isolated bacteria from different sludges. at the organic loading less than 13000 ...201728387154
seasonal variability in size-segregated airborne bacterial particles and their characterization at different source-sites.size-segregated aerosol samplings were carried out near the potential sources of airborne biological particles i.e. at a landfill site, an agricultural field and a road side restaurant-cluster site in winter, spring and summer seasons during 2013-2015 in new delhi. the culturable airborne bacterial (cab) concentrations showed significant seasonal variation from higher to moderate in spring and winter seasons and lowest during summer. highest cab concentrations were observed at the okhla landfill ...201728390023
antibacterial and antibiotic potentiating activities of tropical marine sponge extracts.increasing prevalence of antibiotic resistance has led research to focus on discovering new antimicrobial agents derived from the marine biome. although ample studies have investigated sponges for their bioactive metabolites with promising prospects in drug discovery, the potentiating effects of sponge extracts on antibiotics still remains to be expounded. the present study aimed to investigate the antibacterial capacity of seven tropical sponges collected from mauritian waters and their modulat ...201728392375
analysis of kudoa septempunctata as a cause of foodborne illness and its associated differential diagnosis.recently kudoa septempuctata in olive flounders is suggested as a cause of food poisoning, however whether kudoa septempuctata can affect human gastrointestinal systems is controversial and its pathogenecity remains unclear. in view of the field epidemiology, food poisonings caused by kudoa septempuctata should be distinguished from those caused by staphylococcus aureus and bacillus cereus.201728395399
cereulide production by bacillus weihenstephanensis strains during growth at different ph values and temperatures.besides bacillus cereus, some strains of the psychrotolerant, potentially foodborne pathogen bacillus weihenstephanensis can produce the emetic toxine (cereulide). this toxin is a heat- and acid-stable cyclic dodecadepsipeptide that causes food intoxication with vomiting. however, some severe clinical cases with lethal outcomes have been described. if cereulide can be produced during refrigerated storage, it will not be inactivated by reheating food, representing an important risk of food intoxi ...201728399995
antibacterial effects of lactobacillus isolates of curd and human milk origin against food-borne and human pathogens.this study was undertaken to assess the antibacterial efficacy of lactobacilli isolated from curd and human milk samples. identities of thirty-one different lactobacilli (20 from curd and 11 from human milk) were confirmed by genus-specific pcr and 16s rrna-based sequencing. these strains belonged to five species, lactobacillus casei, l. delbrueckii, l. fermentum, l. plantarum, and l. pentosus. antibacterial activities of cell-free supernatants (cfss) of all the lactobacillus isolates were estim ...201728401466
standardization of biopolymer production from seaweed associative bacteria.polyhydroxyalkanoate (pha) is the biodegradable plastic, which is shown the similar properties to the synthetic plastic. production of pha is expensive when compared with petrochemical based plastics costs and also hazardous to ecosystem. in order to overcome these drawbacks, some cheaper commercially available carbon sources like rice bran, coconut cake, palm jaggary, etc. can be used. the present study aimed to identify the potential pha producing bacterial strains from different seaweeds. bas ...201728404223
ribosomal background of the bacillus cereus group thermotypes.in this study we reconstructed the architecture of bacillus cereus sensu lato population based on ribosomal proteins, and identified a link between the ribosomal proteins' variants and thermal groups (thermotypes) of the bacilli. the in silico phyloproteomic analysis of 55 ribosomal proteins (34 large and 21 small subunit r-proteins) of 421 strains, representing 14 well-established or plausible b. cereus sensu lato species, revealed several ribosomal clusters (r-clusters), which in general were ...201728406161
production and characterization of curcumin microcrystals and evaluation of the antimicrobial and sensory aspects in minimally processed carrots.nontoxic conserving agents are in demand by the food industry due to consumers concern about synthetic conservatives, especially in minimally processed food. the antimicrobial activity of curcumin, a natural phenolic compound, has been extensively investigated but hydrophobicity is an issue when applying curcumin to foodstuff. the objective of this work was to evaluate curcumin microcrystals as an antimicrobial agent in minimally processed carrots. the antimicrobial activity of curcumin microcry ...201728406506
antimicrobial activity and chemical composition of brunfelsia uniflora flower oleoresin extracted by supercritical carbon dioxide.brunfelsia genus is traditionally utilized in popular medicine due to its antibacterial and antifungal properties to name but a few. however, studies on the antimicrobial activity of brunfelsia uniflora flower oleoresin have not been found yet. this study aimed to evaluate the chemical composition and antimicrobial activity of b. uniflora flower oleoresin obtained by supercritical carbon dioxide. oleoresin from the plant dried flowers was obtained by carbon dioxide, and the chemical composition ...201728407186
crystal structure of the flagellar chaperone flis from bacillus cereus and an invariant proline critical for flis dimerization and flagellin recognition.flis is a cytoplasmic flagellar chaperone for the flagellin, which polymerizes into filaments outside of the flagellated bacteria. cytoplasmic interaction between flis and flagellin is critical to retain the flagellin protein in a monomeric form, which is transported from the cytoplasm through the flagellar export apparatus to the extracellular space for filament assembly. defects in the flis protein directly diminish bacterial motility, pathogenicity, and viability. although the overall structu ...201728414127
virulence analysis of bacillus cereus isolated after death of preterm neonates, nice, france, 2013.after the deaths of 2 preterm neonates with bacillus cereus systemic infection in the same intensive care unit, we investigated the pathogenic potential of this bacterium. genetic and virulence analysis indicated the neonates were infected with 2 different strains with a virulence potential similar to environmental strains, indicating likely patient immune response failure.201728418291
diversity of endophytic bacteria in a fern species dryopteris uniformis (makino) makino and evaluation of their antibacterial potential against five foodborne pathogenic bacteria.the fern plant dryopteris uniformis has traditionally been used in herbal medicine and possesses many biological activities. this study was conducted to explore the endophytic bacterial diversity associated with d. uniformis and evaluate their antibacterial potential against foodborne pathogenic bacteria (fpb). among 51 isolated endophytic bacteria (eb), 26 eb were selected based on their morphological characteristics and identified by 16s rrna gene analysis. the distribution of eb was diverse i ...201728418717
effects of culture conditions on the size, morphology and wet density of spores of bacillus cereus 569 and bacillus megaterium qm b1551.the influence of variable culture conditions on the size and wet density of spores of bacillus cereus and bacillus megaterium were examined in this work. culture temperature and initial ph was shown to have a significant impact on the size of both species, with increasingly alkaline culture media and elevated culture temperatures resulting in spores that were, on average, up to 25% reduced in volume. increasing concentrations of inorganic salts in sporulation media exerted differing effects on e ...201728419596
mosquito microbiome dynamics, a background for prevalence and seasonality of west nile virus.symbiotic microbial communities augment host phenotype, including defense against pathogen carriage and infection. we sampled the microbial communities in 11 adult mosquito host species from six regions in southern ontario, canada over 3 years. of the factors examined, we found that mosquito species was the largest driver of the microbiota, with remarkable phylosymbiosis between host and microbiota. seasonal shifts of the microbiome were consistently repeated over the 3-year period, while region ...201728421042
effective thermal inactivation of the spores of bacillus cereus biofilms using microwave.microwave sterilization was performed to inactivate the spores of biofilms of bacillus cereus involved in foodborne illness. the sterilization conditions, such as the amount of water and the operating temperature and treatment time, were optimized using statistical analysis based on 15 runs of experimental results designed by the box-behnken method. statistical analysis showed that the optimal conditions for the inactivation of b. cereus biofilms were 14 ml of water, 108°c of temperature, and 15 ...201728423891
infection-related complications during treatment for childhood acute lymphoblastic leukemia.comprehensive studies on neutropenia and infection-related complications in patients with acute lymphoblastic leukemia (all) are lacking.201728426102
pcr denaturing gradient gel electrophoresis as a useful method to identify of intestinal bacteria flora in haemaphysalis flava ticks.ticks are blood-sucking ectoparasites of great medical and veterinary significance that can transmit bacteria, protozoa, fungi and viruses, causing a variety of human and animal diseases worldwide. in the present study, the intestinal bacterial flora associated with haemaphysalis flava ticks in different developmental stages were analyzed using polymerase chain reaction (pcr) and denaturing gradient gel electrophoresis (dgge). eleven distinct dgge bands were found using pcr-dgge method. sequence ...201728426403
epidemiological study of common diseases and their risk factors in camels in south punjab, pakistan.bacteriological study of mastitis along with common blood protozoan diseases were studied in dromedary camels in cholistan, dera ismail khan and rahim yar khan districts in south punjab, pakistan. for this purpose 300 camels were sampled randomly at different common grazing and watering point. for study of blood parasites clinically suspected and apparently healthy camels, 150 each, were sampled. an overall prevalence of 15%and 5% was recorded for trypanosomiasis and anaplasmosis respectively. t ...201728428133
draft genome sequence of bacillus cereus la2007, a human-pathogenic isolate harboring anthrax-like plasmids.we present the genome sequence of bacillus cereus la2007, a strain isolated in 2007 from a fatal pneumonia case in louisiana. sequence-based genome analysis revealed that la2007 carries a plasmid highly similar to bacillus anthracis pxo1, including the genes responsible for the production and regulation of anthrax toxin.201728428293
the spo0a-sini-sinr regulatory circuit plays an essential role in biofilm formation, nematicidal activities, and plant protection in bacillus cereus ar156.the rhizosphere bacterium bacillus cereus ar156 is capable of forming biofilms, killing nematodes, and protecting plants. however, the underlying molecular mechanisms of these processes are not well understood. in this study, we found that the isogenic mutants δbcspo0a and δbcsini have significantly reduced colonization and nematicidal activity in vitro and biological control efficacy on the tomato plant under greenhouse conditions. we further investigated the role of the spo0a-sini-sinr regulat ...201728430084
genome-wide investigation of biofilm formation in bacillus cereus.bacillus cereus is a soil-dwelling gram-positive bacterium capable of forming structured multicellular communities, or biofilms. however, the regulatory pathways controlling biofilm formation are less well understood in b. cereus in this work, we developed a method to study b. cereus biofilms formed at the air-liquid interface. we applied two genome-wide approaches, random transposon insertion mutagenesis to identify genes that are potentially important for biofilm formation, and transcriptome a ...201728432092
indole derivatives produced by the metagenome genes of the escherichia coli-harboring marine sponge discodermia calyx.three indole derivatives, a novel benzoxazine-indole hybrid (1) and two known indole trimers (2, 3), were isolated from the metagenomic library of the marine sponge discodermia calyx based on functional screening. their structures were elucidated by extensive spectroscopic analysis and comparison of their nmr data to that of known compounds. the antibacterial assay indicated that only compound 2 displayed significant antibacterial activity against bacillus cereus, with approximately 20 mm diamet ...201728441364
surveillance of bacillus cereus isolates in korea from 2012 to 2014.to investigate the prevalence and toxin production characteristics of non-emetic and emetic bacillus cereus strains isolated via the laboratory surveillance system in korea.201728443227
bacteriophage exclusion (brex): a novel anti-phage mechanism in the arsenal of bacterial defense system.the arm race between bacteria and phages leads to the development of many phage resistance mechanisms. bacteria are perpetually changing their strategy to avert phage infection and killing. recently, a study published that shed light on a novel bacterial defense system called bacteriophage exclusion (brex). brex system is a six-gene cassette in bacillus cereus which provides complete phage resistance to a broad range of phages, including lytic and temperate ones. it is a novel defense strategy w ...201728444888
simulating intestinal growth conditions enhances toxin production of enteropathogenic bacillus cereus.bacillus cereus is a ubiquitous bacterial pathogen increasingly reported to be the causative agent of foodborne infections and intoxications. since the enterotoxins linked to the diarrheal form of food poising are foremost produced in the human intestine, the toxic potential of enteropathogenic b. cereus strains is difficult to predict from studies carried out under routine cultivation procedures. in this study, toxigenic properties of a panel of strains (n = 19) of diverse origin were compared ...201728446903
paneth-cell-disruption-induced necrotizing enterocolitis in mice requires live bacteria and occurs independently of tlr4 signaling.necrotizing enterocolitis (nec) remains a leading cause of morbidity and mortality in premature infants. both human surgical specimens and animal models suggest a potential involvement of paneth cells in nec pathogenesis. paneth cells play critical roles in epithelial homeostasis, innate immunity and host-microbial interactions. yet, the complex interplay between paneth cell disruption, epithelial barrier dysfunction and microbial-driven inflammation remains unclear in the immature intestine. in ...201728450472
contribution of native phosphorous-solubilizing bacteria of acid soils on phosphorous acquisition in peanut (arachis hypogaea l.).the present investigation analyzes the in vitro p solubilization [ca-p, al-p, fe(ii)-p, and fe(iii)-p] efficiency of native psb strains from acid soils of odisha and exploitation of the same through biofertilization in peanut (arachis hypogaea l.) growth and p acquisition. one hundred six numbers of soil samples with ph ≤ 5.50 were collected from five districts of odisha viz., balasore, cuttack, khordha, keonjhar, and mayurbhanj. one bacterial isolate from each district were selected and analyze ...201728455550
an experimental study of postmortem decomposition of methomyl in blood.methomyl (s-methyl-1-n-[(methylcarbamoyl)oxy]thioacetimidate) is a carbamate pesticide. it has been noted that in some cases of methomyl poisoning, methomyl is either not detected or detected only in low concentrations in the blood of the victims. however, in such cases, methomyl is detected at higher concentrations in the vitreous humor than in the blood. this indicates that methomyl in the blood is possibly decomposed after death. however, the reasons for this phenomenon have been unclear. we ...201728457508
self assembled snowball-like hybrid nanostructures comprising viburnum opulus l. extract and metal ions for antimicrobial and catalytic applications.herein, we report the production of novel organic-inorganic nanobio-catalytic and antimicrobial agents called "nanosnowball" (nsbs) with a rational design and elucidate the increase in the catalytic and antimicrobial activities. the nsbs resemble to guelder rose were formed of the extract of viburnum opulus (vo) as the organic component and copper (ii) ions (cu(2+)) as the inorganic component. the effects of the vo extract and cu(2+) concentrations on the morphology of nsbs were systematically e ...201728465062
evaluation of two standard and two chromogenic selective media for optimal growth and enumeration of isolates of 16 unique bacillus species.the genus bacillus is a group of gram-positive endospore-forming bacteria that can cause food poisoning and diarrheal illness in humans. a wide range of food products have been linked to foodborne outbreaks associated with these opportunistic pathogens. the u.s. food and drug administration recommends (in their bacteriological analytical manual) the use of bacara or mannitol egg yolk polymyxin (myp) agar plates and the most-probable-number (mpn) method for enumeration and confirmation of bacillu ...201728467187
the putative drug efflux systems of the bacillus cereus group.the bacillus cereus group of bacteria includes seven closely related species, three of which, b. anthracis, b. cereus and b. thuringiensis, are pathogens of humans, animals and/or insects. preliminary investigations into the transport capabilities of different bacterial lineages suggested that genes encoding putative efflux systems were unusually abundant in the b. cereus group compared to other bacteria. to explore the drug efflux potential of the b. cereus group all putative efflux systems wer ...201728472044
predicting genome terminus sequences of bacillus cereus-group bacteriophage using next generation sequencing data.most tailed bacteriophages (phages) feature linear dsdna genomes. characterizing novel phages requires an understanding of complete genome sequences, including the definition of genome physical ends.201728472946
seasonal outbreak of bacillus bacteremia associated with contaminated linen in hong kong.a high seasonal incidence of bacillus bacteremia was associated with the use of contaminated hospital linens.201728475782
green synthesis, characterisation and bioactivity of plant-mediated silver nanoparticles using decalepis hamiltonii root extract.consistent search of plants for green synthesis of silver nanoparticles (snps) is an important arena in nanomedicine. this study focuses on synthesis of snps using bioreduction of silver nitrate (agno3) by aqueous root extract of decalepis hamiltonii. the biosynthesis of snps was monitored by uv-vis analysis at absorbance maxima 432 nm. the fluorescence emission spectra of snps illustrated the broad emission peak 450-483 nm at different excitation wavelengths. the surface characteristics were st ...201728476981
the phosphotransferase system gene ptsi in bacillus cereus regulates expression of soda2 and contributes to colonization of wheat roots.plant growth-promoting rhizobacteria effectively enhance plant growth and root colonization by the bacteria is a prerequisite during the process. bacillus cereus 905, a rhizosphere bacterium originally isolated from wheat roots, colonizes the wheat rhizosphere with a large population size. we previously showed that a manganese-containing superoxide dismutase (mnsod2), encoded by the soda2 gene, plays an important role in colonization of the wheat rhizosphere by b. cereus 905. in this study, we i ...201728478075
aptamer-based trapping: enrichment of bacillus cereus spores for real-time pcr detection.aptamer-based trapping techniques are in general suitable to replace common antibody-based enrichment approaches. a time-consuming isolation or clean-up is often necessary during sample preparation, e.g. for the detection of spores. for the development of bioanalytical routine approaches, aptamers with a high affinity to b. cereus spores were applied for the establishment and validation of an aptamer-based trapping technique in milk with fat contents between 0.3 and 3.5%. thereby, enrichment fac ...201728478557
antimicrobial activity of aqueous, ethanolic and methanolic leaf extracts from acacia spp. and eucalyptus nicholii.in europe, acacia and eucalyptus, originate large amounts of biomass, due to their need by industries and other biological control, that can be used to extract antimicrobial substances.201628480369
effect of microorganisms on reducing cadmium uptake and toxicity in rice (oryza sativa l.).this study analyzed the application of three microorganism inoculums, including bacillus subtilis, bacillus cereus, and commercial effective microorganism (em) solution in order to determine cadmium (cd) reduction in rice (oryza sativa l.) and rice growth promotion. rice was grown in cd-contaminated soil (120 mg/kg) and selected microorganisms were inoculated. cd concentration and rice weight were measured at 45 and 120 days of the experiment. the result showed that b. subtilis inoculation into ...201728480489
soil acidification aggravates the occurrence of bacterial wilt in south china.soil acidification is a major problem in modern agricultural systems and is an important factor affecting the soil microbial community and soil health. however, little is known about the effect of soil acidification on soil-borne plant diseases. we performed a 4-year investigation in south china to evaluate the correlation between soil acidification and the occurrence of bacterial wilt. the results showed that the average soil ph in fields infected by bacterial wilt disease was much lower than t ...201728487678
lateral flow assay-based bacterial detection using engineered cell wall binding domains of a phage endolysin.the development of a cost-effective and efficient bacterial detection assay is essential for diagnostic fields, particularly in resource-poor settings. although antibodies have been widely used for bacterial capture, the production of soluble antibodies is still expensive and time-consuming. here, we developed a nitrocellulose-based lateral flow assay using cell wall binding domains (cbds) from phage as a recognition element and colloidal gold nanoparticles as a colorimetric signal for the detec ...201728494369
effect of glucose and olive oil as potential carbon sources on production of phas copolymer and tercopolymer by bacillus cereus fa11.in this study, the influence of different physicochemical parameters on the yield of polyhydroxyalkanoates (phas) produced by bacillus cereus fa11 is investigated. the physicochemical factors include ph, temperature, time, inoculum size and its age, agitation speed and composition of the glucose rich peptone deficient (grpd) medium. during two-stage fermentation, b. cereus fa11 produced a significantly high (p < 0.05) yield (80.59% w/w) of phas copolymer using grpd medium containing glucose (15  ...201728501987
antibacterial and antioxidative activity of o-amine functionalized chitosan.cinnamaldehyde was immobilized to o-amine functionalized chitosan via a coupling reaction. fourier transform infrared spectroscopy confirmed n-cinnamyl substitution. wetting analyses demonstrate more hydrophobicity in the n-cinnamyl substituted o-amine functionalized chitosan compared to chitosan or unsubstituted o-amine functionalized chitosan. thermal gravimetric analysis and differential scanning calorimetry demonstrates that the prepared n-cinnamyl substituted o-amine functionalized chitosan ...201728504167
development of a gold nanoparticle-based universal oligonucleotide microarray for multiplex and low-cost detection of foodborne pathogens.bacterial foodborne diseases remain major threats to food safety and public health, especially in developing countries. in this study a novel assay, combining gold nanoparticle (gnp)-based multiplex oligonucleotide ligation-pcr and universal oligonucleotide microarray technology, was developed for inexpensive, specific, sensitive, and multiplex detection of eight common foodborne pathogens, including shigella spp., campylobacter jejuni, bacillus cereus, escherichia coli o157:h7, listeria monocyt ...201728505584
former food products safety: microbiological quality and computer vision evaluation of packaging remnants contamination.the use of alternative feed ingredients in farm animal's diets can be an interesting choice from several standpoints, including safety. in this respect, this study investigated the safety features of selected former food products (ffps) intended for animal nutrition produced in the framework of the izs plv 06/14 rc project by an ffp processing plant. six ffp samples, both mash and pelleted, were analysed for the enumeration of total viable count (tvc) (iso 4833), enterobacteriaceae (iso 21528-1) ...201728513297
comparative genomic analysis reveals genetic features related to the virulence of bacillus cereus forc_013.bacillus cereus is well known as a gastrointestinal pathogen that causes food-borne illness. in the present study, we sequenced the complete genome of b. cereus forc_013 isolated from fried eel in south korea. to extend our understanding of the genomic characteristics of forc_013, we conducted a comparative analysis with the published genomes of other b. cereus strains.201728515790
cyclic diarylheptanoids from corylus avellana green leafy covers: determination of their absolute configurations and evaluation of their antioxidant and antimicrobial activities.the methanol extract of the leafy covers of corylus avellana, source of the italian pgi (protected geographical indication) product "nocciola di giffoni", afforded two new cyclic diarylheptanoids, giffonins t and u (2 and 3), along with two known cyclic diarylheptanoids, a quinic acid, flavonoid-, and citric acid derivatives. the structures of giffonins t and u were determined as highly hydroxylated cyclic diarylheptanoids by 1d and 2d nmr experiments. their relative configurations were assigned ...201728520428
decontamination of multiple heavy metals-containing effluents through microbial biotechnology.to decontaminate heavy metal-containing waste water, a microbial biotechnology was developed by using the synergy between sulfate reducing bacteria (srb), bacillus cereus (b. cereus) and camellia oleifera cake (coc). in this process the coc degradation assisted by b.cereus, created an anoxic environment and provided energy and nutrition for srb. both of b. cereus and srb played significant roles through biosorption, bioaccumulation and biosurfactant production. meanwhile, a flotation technology ...201728521206
spotlight on bacillus cereus and its food poisoning toxins. 201728521335
non-contact electromagnetic induction heating for eradicating bacteria and yeasts on biomaterials and possible relevance to orthopaedic implant infections: in vitro findings.infection of implants is a major problem in elective and trauma surgery. heating is an effective way to reduce the bacterial load in food preparation, and studies on hyperthermia treatment for cancer have shown that it is possible to heat metal objects with pulsed electromagnetic fields selectively (pemf), also known as induction heating. we therefore set out to answer the following research question: is non-contact induction heating of metallic implants effective in reducing bacterial load in v ...201728522446
draft genome sequences of bacillus cereus e41 and bacillus anthracis f34 isolated from algerian salt lakes.two strains of bacillus, b. cereus e41 and b. anthracis f34, were isolated from a salt lake in aïn m'lila-oum el bouaghi, eastern algeria, and ain baida-ouargla, southern algeria, respectively. their genomes display genes for the production of several bioactive secondary metabolites, including polyhydroxyalkanoate, iron siderophores, lipopeptides, and bacteriocins.201728522726
release study and inhibitory activity of thyme essential oil-loaded chitosan nanoparticles and nanocapsules against foodborne bacteria.the antibacterial property of thyme essential oil due to different volatile compounds, has been well documented in the literature. to overcome the high volatility of essential oil components, encapsulation has emerged as a new alternative. in this work, chitosan and thyme essential oil-loaded chitosan nanoparticles (teo-csnps) and nanocapsules (teo-csncs) were prepared by nanoprecipitation and nanoencapsulation, respectively. the morphology, encapsulation efficiency, release kinetics, and inhibi ...201728526346
diversity and probiotic potential of lactic acid bacteria isolated from horreh, a traditional iranian fermented food.the aim of this study was to evaluate the probiotic potential of lactic acid bacteria (lab) strains isolated from horreh. some probiotic properties, e.g., resistance to acid, bile tolerance, antibacterial activity, and antibiotic susceptibility, were investigated. a total of 140 gram-positive and catalase-negative isolates from horreh were subjected to identification and grouping by cultural methods and the 16s rrna sequencing. the new isolates were identified to be lactobacillus (fermentum, pla ...201728527125
revealing the ability of a novel polysaccharide bioflocculant in bioremediation of heavy metals sensed in a vibrio bioluminescence reporter assay.a bioflocculant-producing bacterial strain, designated msi021, was isolated from the marine sponge dendrilla nigra and demonstrated 94% flocculation activity in a kaolin clay suspension. msi021 was identified as bacillus cereus based on phylogenetic affiliation and biochemical characteristics. the purified extra-cellular bioflocculant was chemically elucidated as a polysaccharide molecule. the polysaccharide bioflocculant was stable under both acidic and alkaline conditions (ph 2.0-10.0) and tem ...201728527323
syntrophic association of termite gut bacterial symbionts with bifunctional characteristics of cellulose degrading and polyhydroxyalkanoate producing bacteria.the guild between higher termites and their partnership with the diverse community of bacteria and archaea in their gut is a marvel evolutionary achievement. sustained attempts were made worldwide with a quest for identifying viable important biological macromolecule polyhydroxyalkanoate (pha) accumulating bacteria. termite gut serve as a novel source for bacteria with dual properties like pha production as well as cellulose degradation. among 40 isolates cultivated, 32.5% turned positive for pc ...201728528947
interaction of nanostructured tio2 biointerfaces with stem cells and biofilm-forming bacteria.nanostructured tio2 nanotubes (nts) of diameters from 15 to 100nm were fabricated by an electrochemical anodization process. biofilm-positive strains of bacillus cereus and pseudomonas aeruginosa behaved similarly on all tio2 nts as well as on native titanium (ti) foil. the adhesion and growth of mesenchymal stem cells (msc), embryonic stem cells (esc), and pure cardiomyocytes derived from esc exhibited significant differences. msc as well as esc were, in contrast to cardiomyocytes, able to adhe ...201728532058
bacillus cereus-type polyhydroxyalkanoate biosynthetic gene cluster contains r-specific enoyl-coa hydratase gene.bacillus cereus and bacillus megaterium both accumulate polyhydroxyalkanoate (pha) but their pha biosynthetic gene (pha) clusters that code for proteins involved in pha biosynthesis are different. namely, a gene encoding maoc-like protein exists in the b. cereus-type pha cluster but not in the b. megaterium-type pha cluster. maoc-like protein has an r-specific enoyl-coa hydratase (r-hydratase) activity and is referred to as phaj when involved in pha metabolism. in this study, the pha cluster of ...201728532241
production and characterization of a new biodegradable fenugreek seed gum based active nanocomposite film reinforced with nanoclays.in the present work, fenugreek seed gum (fsg)/clay nanocomposite films were prepared with nanoclays (na(+) montmorillonite [mmt], halloysite [hnt] and nanomer(®) i.44 p [nm]) at different amounts (0, 2.5, 5.0 and 7.5g clay/100g fsg) by solution casting method and characterized. increasing amount of nanoclay significantly (p<0.05) improved oxygen barrier and thermal properties of the biodegradable films. agar diffusion tests revealed that fsg based nanocomposite films exhibited strong antimicrobi ...201728536016
in vitro anti-oxidant and anti-microbial potentiality investigation of different fractions of caryota urens leaves.caryota urens is a member of the arecaceae family and a common plant in the southeast asian region. this plant has been reported as an anti-microbial agent in recent years. thus, we aimed to find out the mic (minimum inhibitory concentration) against different pathogenic microorganism.201628536384
antibacterial cysteine protease from cissus quadrangularis l.an antibacterial cp was extracted from the stem of cissus quadrangularis and purified with a 5.39 fold increase in specific activity and 8.67% recovery. the molecular weight of the purified enzyme was estimated to be 39kda by sds-page. the purified enzyme appeared as a single band on native-page. the optimum ph and temperature for protease activity were around 6.0 and 50°c respectively. the cp showed ph stability from 3 to 10 and retained more than 90% of its relative protease activity. the addi ...201728539266
identification of microorganisms isolated from counterfeit and unapproved decorative contact lenses.all contact lenses (corrective/noncorrective) are considered class ii or class iii medical devices under the federal food, drug, and cosmetic act, which also states that contact lenses can only be obtained with a prescription. the forensic chemistry center of the us food & drug administration has examined over 300 decorative, noncorrective contact lenses obtained without a prescription. our observations indicate that 60% of the counterfeit lenses and 27% of the unapproved lenses examined were po ...201728542816
heteroleptic metal(ii) complexes of hydrotris(methimazolyl)borate and diimines: synthesis, theoretical calculations, antimicrobial, antioxidant, in vitro cytotoxicity and molecular docking studies.a series of heteroleptic metal(ii) complexes of formulation [m(tm)(diimine)](clo4) (1-8), [tm = hydrotris(methimazolyl)borate, diimine = 2,2'-bipyridyl or 1,10-phenanthroline and m = mn(ii), ni(ii), cu(ii) or zn(ii)] have been synthesized and characterized by spectroscopic methods. the geometric parameters of the complexes were determined using uv-vis spectroscopy and dft calculations. the analyses of homo and lumo have been used to explain the charge transfer within the molecule. antimicrobial ...201728546116
Refresh
firstprev
...8182
nextlast
Displaying items 8001 - 8100 of 8187