Publications
| Title | Abstract | Year Filter | PMID(sorted ascending) Filter |
|---|
| pathogenic bacteria in finnish bulk tank milk. | while the quality of raw cow milk in finland is known for its high hygienic standard, with the national average total bacterial count being below 10(4) cfu/ml annually, the prevalence of pathogenic bacteria in finnish raw milk is underreported. the aim of this study was to determine the occurrence of listeria monocytogenes, thermophilic campylobacter spp., salmonella spp., stx-positive escherichia coli (stec), coagulase-positive staphylococci, yersinia spp., and bacillus cereus group in raw cow ... | 2013 | 23373473 |
| molecular identification and safety of bacillus species involved in the fermentation of african oil beans (pentaclethra macrophylla benth) for production of ugba. | molecular identification of bacillus spp. involved in the fermentation of african oil bean seeds for production of ugba, as well as ability of the bacillus spp. isolated to produce toxins, were investigated. forty-nine bacteria were isolated from ugba produced in different areas of south eastern nigeria and identified by phenotyping and sequencing of 16s rrna, gyrb and rpob genes. genotypic diversities at interspecies and intraspecies level of the isolates were screened by pcr amplification of t ... | 2013 | 23376783 |
| inhibition of bacillus cereus growth by bacteriocin producing bacillus subtilis isolated from fermented baobab seeds (maari) is substrate dependent. | maari is a spontaneously alkaline fermented food condiment made from baobab tree seeds. due to the spontaneous nature of maari fermentations growth of the opportunistic human pathogen bacillus cereus is occasionally observed. bacillus subtilis strains are important for alkaline seed fermentations because of their enzymatic activities contributing to desirable texture, flavor and ph development. some b. subtilis strains have antimicrobial properties against b. cereus. in the present work, three b ... | 2013 | 23376785 |
| food preservative potential of gassericin a-containing concentrate prepared from cheese whey culture supernatant of lactobacillus gasseri la39. | gassericin a (ga) is a circular bacteriocin produced by lactobacillus gasseri la39. in this study, ga-containing concentrate was prepared using a cross-flow membrane filtration device (30 kda cut-off) from the culture supernatant of lb. gasseri la39 cultivated in a cheese whey-based food-grade medium. the bacteriocin activity titer in the concentrate was 16 times as high as that of the culture supernatant and was completely maintained through each incubation at 4°c for 3 months, 37°c for 2 month ... | 2012 | 23384356 |
| structure determination through homology modelling and torsion-angle simulated annealing: application to a polysaccharide deacetylase from bacillus cereus. | the structure of bc0361, a polysaccharide deacetylase from bacillus cereus, has been determined using an unconventional molecular-replacement procedure. tens of putative models of the c-terminal domain of the protein were constructed using a multitude of homology-modelling algorithms, and these were tested for the presence of signal in molecular-replacement calculations. of these, only the model calculated by the sam-t08 server gave a consistent and convincing solution, but the resulting model w ... | 2013 | 23385463 |
| activity of the bacillus thuringiensis nprr-nprx cell-cell communication system is co-ordinated to the physiological stage through a complex transcriptional regulation. | nprr is a quorum sensor of the rnpp family found in bacteria of the bacillus cereus group. in association with its cognate peptide nprx, nprr controls the expression of genes essential for survival and sporulation of bacillus thuringiensis during its necrotrophic development in insects. here, we report that the nprr-nprx genes are not autoregulated and are co-transcribed from a σ(a) -dependent promoter (pa ) located upstream from nprr. the transcription from pa starts at the onset of the station ... | 2013 | 23388036 |
| genome sequence and analysis of a broad-host range lytic bacteriophage that infects the bacillus cereus group. | comparatively little information is available on members of the myoviridae infecting low g+c content, gram-positive host bacteria of the family firmicutes. while numerous bacillus phages have been isolated up till now only very few bacillus cereus phages have been characterized in detail. | 2013 | 23388049 |
| proteolytic activity of gut bacteria isolated from the velvet bean caterpillar anticarsia gemmatalis. | the development of proteinase inhibitors as potential insect control agents has been constrained by insect adaptation to these compounds. the velvet bean caterpillar (anticarsia gemmatalis) is a key soybean pest species that is well-adapted to proteinase inhibitors, particularly serine-proteinase inhibitors, which are abundant in the caterpillar host. the expression of diverse proteolytic enzymes by gut symbionts may allow the velvet bean caterpillar to circumvent proteinase inhibitors produced ... | 2013 | 23392900 |
| applied development of crude enzyme from bacillus cereus in prebiotics and microbial community changes in soil. | the chitosanase and chitinase activity were revealed in the culture supernatant of bacillus cereus tku027 with shrimp head powder (shp) as the sole carbon/nitrogen source. the chitosan with 60% degree of deacetylation (dd) was depolymerized by tku027 crude enzyme. the low dp oligomers stimulated the growth of lactobacillus paracasei bcrc12193 and lactobacillus kefir bcrc14011 in a mrs broth supplemented with low dp oligomers for 12 h. conversely, the high dp oligomers (0.1%) had potent inhibitor ... | 2012 | 23399269 |
| characterization of an atmospheric pressure plasma jet and its applications for disinfection and cancer treatment. | in this work an atmospheric pressure non-thermal resistive barrier (rb) plasma jet was constructed, characterized and was applied for biomedical applications. the rb plasma source can operate in both dc (battery) as well as in standard 60/50 hz low frequency ac excitation, and it functions effectively in both direct and indirect plasma exposure configurations. the characteristics of the rb plasma jet such as electrical properties, plasma gas temperature and nitric oxides concentration were deter ... | 2013 | 23400199 |
| evaluation of bacterial flora during the ripening of kedong sufu, a typical chinese traditional bacteria-fermented soybean product. | kedong sufu is a typical bacteria-fermented sufu in china. isolation and identification of the autochthonous bacteria involved would allow the design of specific starters for this speciality. the purpose of the present study was to evaluate the bacterial flora during the ripening of kedong sufu using polymerase chain reaction denaturing gradient gel electrophoresis (pcr-dgge) and culturing. | 2013 | 23400969 |
| purification and identification of two antifungal cyclic dipeptides from bacillus cereus subsp. thuringiensis associated with a rhabditid entomopathogenic nematode especially against fusarium oxysporum. | the cell-free culture filtrate of bacillus cereus subsp. thuringiensis associated with an entomopathogenic nematode (epn), rhabditis (oscheius) sp., exhibited strong antimicrobial activity. the ethyl acetate extract of the bacterial culture filtrate was purified by silica gel column chromatography to obtain two cyclic dipeptides (cdps). the structure and absolute stereochemistry of this compound were determined based on extensive spectroscopic analyses (fabms, (1)h nmr, (13)c nmr, (1)h-(1)h cosy ... | 2014 | 23402421 |
| glucose 6p binds and activates hlyiir to repress bacillus cereus haemolysin hlyii gene expression. | bacillus cereus is a gram-positive spore-forming bacterium causing food poisoning and serious opportunistic infections. these infections are characterized by bacterial accumulation despite the recruitment of phagocytic cells. we have previously shown that b. cereus haemolysin ii (hlyii) induces macrophage cell death by apoptosis. in this work, we investigated the regulation of the hlyii gene. we show that hlyiir, the negative regulator of hlyii expression in b. cereus, is especially active durin ... | 2013 | 23405113 |
| bacillus weihenstephanensis characteristics are present in bacillus cereus and bacillus mycoides strains. | the bacillus cereus group comprises seven bacterial species: bacillus cereus, bacillus anthracis, bacillus thuringiensis, bacillus mycoides, bacillus pseudomycoides, bacillus cytotoxicus, and bacillus weihenstephanensis. bacillus weihenstephanensis is distinguished based on its capability to grow at 7 °c but not at 43 °c, and the presence of specific signature sequences in the 16s rrna and cspa genes and in several housekeeping genes: glpf, gmk, purh, and tpi. bacillus weihenstephanensis-specifi ... | 2013 | 23413955 |
| antiradical, antimicrobial and cytotoxic activities of commercial beetroot pomace. | the by-product of food processing is often utilized as feed, and for the preparation of dietary fiber and biofuel. however, these products are also promising sources of bioactive antioxidants and color giving compounds, which could be used as additives in the food, pharmaceutical and cosmetic industry. the aim of this study was to investigate the phytochemical profile, and the antiradical, antimicrobial and cytotoxic activities of industrial beetroot pomace extract (bpe). the content of phenolic ... | 2013 | 23423147 |
| copper(ii) triflate promoted multicomponent catalytic clubbing of piperazinyl-thiazoloquinolines and thiazolocoumarins as antimicrobials. | step economical, multicomponent construction of two series based on quinoline and coumarin ring systems was carried out. annulation towards the 2-piperazinylthiazole system was established in satisfactory yields, using copper(ii) triflate. these multicomponent reaction products were examined for their potential inhibitory effect against two gram-positive bacteria (staphylococcus aureus and bacillus cereus), three gram-negative bacteria (escherichia coli, pseudomonas aeruginosa, and klebsiella pn ... | 2013 | 23423648 |
| antimicrobial activity of a new preservative for multiuse ophthalmic solutions. | the aim of this study was to examine the antimicrobial activity and the preservative efficacy of a novel preservative solution containing sodium hydroxymethyl glycinate (shmg) and edetate disodium (edta), which is used for preservation of some commercial ophthalmic formulations. | 2013 | 23428175 |
| a nanoporous membrane-based impedimetric immunosensor for label-free detection of pathogenic bacteria in whole milk. | we introduce a nanoporous membrane based impedimetric immunosensor for the label-free detection of bacterial pathogens in whole milk. a simple and rapid method to modify a commercially available alumina nanoporous membrane with hyaluronic acid (ha) effectively reduced the non-specific binding of biomolecules and other cells, and permitted successful immobilization of antibodies. escherichia coli o157:h7, one of the most harmful food-borne pathogenic bacteria, was tested as a model pathogen in th ... | 2013 | 23428735 |
| bacillus cereus fasciitis: a unique pathogen and clinically challenging sequela of inoculation. | bacillus cereus is an aerobic, spore-forming, gram-positive rod. it has historically been associated with "fried rice syndrome," a foodborne diarrheal and emetic illness resulting from eating fried rice dishes that have been sitting at room temperature for hours. we report the case of a 9-year-old boy who developed culture-positive b cereus fasciitis of the right lower extremity after being impaled on a tree branch. this case report further elucidates and emphasizes the importance of recognizing ... | 2013 | 23431539 |
| microbiological quality and risk factors related to sandwiches served in bakeries, cafés, and sandwich bars in south korea. | the objective of this study was to investigate the microbiological quality of sandwiches produced on site and served in bakeries, cafés, and sandwich bars in south korea and to determine the major risk factors affecting the sanitation level in each store (n = 1,120). the microbiological quality of the sandwiches was analyzed, and the sanitation level of each store was evaluated as satisfactory or unsatisfactory based on sanitation guidelines. total coliforms were detected in 906 samples (80.9%), ... | 2013 | 23433370 |
| a probability model for enterotoxin production of bacillus cereus as a function of ph and temperature. | bacillus cereus is frequently isolated from a variety of foods, including vegetables, dairy products, meats, and other raw and processed foods. the bacterium is capable of producing an enterotoxin and emetic toxin that can cause severe nausea, vomiting, and diarrhea. the objectives of this study were to assess and model the probability of enterotoxin production of b. cereus in a broth model as affected by the broth ph and storage temperature. a three-strain mixture of b. cereus was inoculated in ... | 2013 | 23433386 |
| endophthalmitis. | endophthalmitis means bacterial or fungal infection inside the eye involving the vitreous and/or aqueous humors. most cases are exogenous and occur after eye surgery, after penetrating ocular trauma, or as an extension of corneal infection. an increasing number of cases are occurring after intravitreal injections of anti-vascular endothelial growth factor (vegf) medications. endophthalmitis may also be endogenous, arising from bacteraemic or fungaemic seeding of the eye. the infected eye never s ... | 2013 | 23438028 |
| sterility testing of apheresis hematopoietic progenitor cell products using an automated blood culture system. | aabb standards require monitoring of hematopoietic progenitor cell (hpc) products for microbial contamination. to date, there is no automated blood culture system cleared by the food and drug administration for this application. our objective was to validate the versatrek system (trek diagnostic systems) for sterility testing of apheresis hpc products. | 2013 | 23438051 |
| extended genetic analysis of brazilian isolates of bacillus cereus and bacillus thuringiensis. | multiple locus sequence typing (mlst) was undertaken to extend the genetic characterization of 29 isolates of bacillus cereus and bacillus thuringiensis previously characterized in terms of presence/absence of sequences encoding virulence factors and via variable number tandem repeat (vntr). additional analysis involved polymerase chain reaction for the presence of sequences (be, cytk, ina, pag, lef, cya and cap), encoding putative virulence factors, not investigated in the earlier study. mlst a ... | 2013 | 23440117 |
| bacillus "next generation" diagnostics: moving from detection toward subtyping and risk-related strain profiling. | the highly heterogeneous genus bacillus comprises the largest species group of endospore forming bacteria. because of their ubiquitous nature, bacillus spores can enter food production at several stages resulting in significant economic losses and posing a potential risk to consumers due the capacity of certain bacillus strains for toxin production. in the past, food microbiological diagnostics was focused on the determination of species using conventional culture-based methods, which are still ... | 2013 | 23440299 |
| antimicrobial activity of essential oils from mediterranean aromatic plants against several foodborne and spoilage bacteria. | the antimicrobial activity of essential oils extracted from a variety of aromatic plants, often used in the portuguese gastronomy was studied in vitro by the agar diffusion method. the essential oils of thyme, oregano, rosemary, verbena, basil, peppermint, pennyroyal and mint were tested against gram-positive (listeria monocytogenes, clostridium perfringens, bacillus cereus, staphylococcus aureus, enterococcus faecium, enterococcus faecalis, and staphylococcus epidermidis) and gram-negative stra ... | 2013 | 23444311 |
| gangrenous mastitis caused by bacillus species in six goats. | 6 lactating dairy goats were examined because of acute mastitis. | 2013 | 23445297 |
| microbial contamination associated with consumption and the growth in plastic bottled beverage. | plastic bottles enable the storage of unfinished beverages, and most of microbial contamination has occurred in the unfinished beverage that was left. therefore, we investigated microorganisms in various beverages contaminated by pouring and drinking directly by mouth from the bottle, and analyzed the growth of microorganisms in the beverages at room temperature. in the pouring test, microbial growth was detected in 60 of 320 samples, and 13 bacterial strains, 49 mold strains, and 8 yeast strain ... | 2013 | 23445421 |
| about the bacillus cereus group. | 2013 | 23448786 | |
| the significance of genome-based diagnosis for the bacillus cereus species. | 2013 | 23448787 | |
| meningitis due to bacillus cereus: a case report and review of the literature. | bacillus cereus is infrequently associated with invasive central nervous system (cns) disease. infection is associated with conditions that lead to reduced host immunity and provide direct access to the cns, such as spinal anesthesia and ventricular tubes and shunts. a case of ventriculitis secondary to b cereus in a patient receiving intrathecal chemotherapy is reported, along with a review of the current literature. b cereus can colonize medical devices, thus posing a risk for invasive disease ... | 2012 | 23449377 |
| analysis of the bacterial diversity existing on animal hide and wool: development of a preliminary pcr-restriction fragment length polymorphism fingerprint database for identifying isolates. | twenty-one bacterial strains were isolated from imported cattle hide and rabbit wool using two types of media, nutrient broth, and nutrient broth with serum. the bacteria identified were brevibacillus laterosporus, leclercia adecarboxylata, peptococcus niger, bacillus circulans, raoultella ornithinolytica, bacillus subtilis, bacillus cereus, bacillus thermobacillus, bacillus choshinensis, bacillus sphaericus, acinetobacter haemolyticus, sphingomonas paucimobilis, bacillus thuringiensis, staphylo ... | 2012 | 23451394 |
| screening of solvent dependent antibacterial activity of prunus domestica. | fruit of prunus domestica was extracted in ethanol. the ethanol extract was further extracted with two solvents ethyl acetate and chloroform. the crude ethanol extract and two fractions (ethyl acetate and chloroform) were screened for their antibacterial activity using the agar well diffusion method .they were tested against nine bacteria; five gram positive bacteria (staphylococcus aureus, streptococcuc intermedius, bacillus cereus, bacillus pumilus) and four gram negative bacteria (eschrichia ... | 2013 | 23455215 |
| airborne microbial composition in a high-throughput poultry slaughtering facility. | a high-throughput chicken slaughtering facility in beijing was systematically investigated for numbers of airborne microorganisms. samples were assessed for counts of aerobic bacteria, staphylococcus aureus, total coliforms, escherichia coli, pseudomonas aeruginosa, listeria monocytogenes, bacillus cereus, and salmonella. during a 4-month period (september to december 2011), samples were collected for 10 min three times daily (preproduction, production, and postproduction). samples were collecte ... | 2013 | 23462077 |
| co-production of surfactin and a novel bacteriocin by bacillus subtilis subsp. subtilis h4 isolated from bikalga, an african alkaline hibiscus sabdariffa seed fermented condiment. | bikalga is a hibiscus sabdariffa seed fermented condiment widely consumed in burkina faso and neighboring countries. the fermentation is dominated by bacillus subtilis group species. ten b. subtilis subsp. subtilis (six isolates) and bacillus licheniformis (four isolates) isolated from traditional bikalga were examined for their antimicrobial activity against a panel of 36 indicator organisms including gram-positive and gram-negative bacteria and yeasts. the bacillus spp. isolates showed variabl ... | 2013 | 23466466 |
| biosorption of cd(ii) by live and dead cells of bacillus cereus rc-1 isolated from cadmium-contaminated soil. | the present study investigated the biosorption capacity of live and dead cells of bacillus cereus rc-1 for cd(ii). the biosorption characteristics were investigated as a function of initial ph, contact time, and initial cadmium concentration. equilibrium biosorption was modeled using langmuir, freundlich and redlich-peterson isotherm equations. it was found that the maximum biosorption capacities calculated from langmuir isotherm were 31.95 mg/g and 24.01 mg/g for dead cells and live cells, resp ... | 2013 | 23466537 |
| [evaluation of the immunochromatography kit for detection of emetic-toxin producing bacillus cereus]. | we evaluated the sensitivity and specificity of an immunochromatography kit, single-path emetic tox mrk (merck), which targets a marker protein for the detection of bacillus cereus that produces emetic toxin. strains were isolated after outbreaks of food poisoning, and from retail prepared foods and food products. the strains were examined for the presence of the emetic toxin-synthetase gene by pcr. all 58 emetic strains isolated from the food poisoning cases showed a positive reaction in the im ... | 2012 | 23470854 |
| synthesis, antimicrobial, antiquorum-sensing, antitumor and cytotoxic activities of new series of fused [1,3,4]thiadiazoles. | new series of [1,3,4]thiadiazolo[3,2-a]pyrimidines, benzo[h][1,3,4]thiadiazolo[2,3-b]quinazolines, benzothiadiazolotriazocine, and imidazo[2,1-b][1,3,4]thiadiazoles have been synthesized and characterized by analytical and spectrometrical methods (ir, ms, (1)h and (13)c nmr). twenty of the synthesized compounds were screened for antibacterial activity against escherichia coli, staphylococcus aureus and bacillus cereus. they were found to be either moderately active, slightly active or inactive a ... | 2013 | 23474904 |
| discrimination between mesophilic and psychrotolerant strains in the bacillus cereus group based on the psti digestion of the pyca gene. | a simple and rapid assay for the detection of bacillus weihenstephanensis isolates and other psychrotolerant strains in the bacillus cereus group was developed. it is based on the presence of a nucleotide substitution at position 795 on the housekeeping pyca gene in all b. weihenstephanensis strains. this mutation creates a psti recognition site. it is absent in mesophilic strains in the b. cereus group. the pyca gene is amplified by pcr and the amplicons submitted to psti digestions. in mesophi ... | 2013 | 23475137 |
| molecular signatures for bacillus species: demarcation of the bacillus subtilis and bacillus cereus clades in molecular terms and proposal to limit the placement of new species into the genus bacillus. | the genus bacillus is a phylogenetically incoherent taxon with members of the group lacking a common evolutionary history. comprising aerobic and anaerobic spore-forming bacteria, no characteristics are known that can distinguish species of this genus from other similar endospore-forming genera. with the availability of complete genomic data from over 30 different species from this group, we have constructed detailed phylogenetic trees to determine the relationships among bacillus and other clos ... | 2013 | 23475340 |
| novel inhibitor of bacterial sphingomyelinase, smy-540, developed based on three-dimensional structure analysis. | bacterial sphingomyelinase (smase) is thought to play a crucial role in bacterial evasion of the immune response during the early stages of infections. | 2014 | 23488740 |
| diversity of bacillus cereus group strains is reflected in their broad range of pathogenicity and diverse ecological lifestyles. | bacillus cereus comprises a highly versatile group of bacteria, which are of particular interest because of their capacity to cause disease. emetic food poisoning is caused by the toxin cereulide produced during the growth of emetic b. cereus in food, while diarrhoeal food poisoning is the result of enterotoxin production by viable vegetative b. cereus cells in the small intestine, probably in the mucus layer and/or attached to the host's intestinal epithelium. the numbers of b. cereus causing d ... | 2013 | 23488744 |
| synthesis and antimicrobial activity of polyhalo isophthalonitrile derivatives. | a series of polyhalo isophthalonitrile derivatives (3 and 4) that incorporate a variety of substituents at the 2-, 4-, 5- and/or 6-positions of the isophthalonitrile moieties have been designed and synthesized. these derivatives were evaluated for their antimicrobial activity against staphylococcus aureus, bacillus cereus (gram-positive bacteria), escherichia coli, pseudomonas aeruginosa (gram-negative bacteria); and candida albicans (fungi). compounds 3 and 4 showed stronger inhibition of gram- ... | 2013 | 23489634 |
| selection of dna aptamers for capture and detection of salmonella typhimurium using a whole-cell selex approach in conjunction with cell sorting. | alternative ligands such as nucleic acid aptamers can be used for pathogen capture and detection and offer advantages over antibodies, including reduced cost, ease of production and modification, and improved stability. dna aptamers demonstrating binding specificity to salmonella enterica serovar typhimurium were identified by whole-cell-systematic evolution of ligands by exponential enrichment (selex) beginning with a combinatorial library of biotin-labeled single stranded dna molecules. aptame ... | 2013 | 23494620 |
| a new method for rapid and quantitative detection of the bacillus cereus emetic toxin cereulide in food products by liquid chromatography-tandem mass spectrometry analysis. | the bacillus cereus emetic toxin cereulide causes foodborne intoxication, which may occasionally result in severe disease, and even death. to differentially diagnose the emetic-type of foodborne disease caused by b. cereus and assess the safety of commercial food, we developed a rapid method to quantitate cereulide. this method was combined with liquid chromatography-tandem mass spectrometry (lc-ms/ms) analysis for the extraction of cereulide from food using a normal-phase silica gel cartridge. ... | 2012 | 23498175 |
| bacillus cereus var. toyoi promotes growth, affects the histological organization and microbiota of the intestinal mucosa in rainbow trout fingerlings. | in this preliminary study, we evaluated the effects of a gram-positive soil bacteria bacillus cereus var. toyoi on the growth performance, digestive enzyme activities, intestinal morphology, and microbiota in rainbow trout oncorhynchus mykiss fingerlings. trout were maintained in a recirculation system and fed 2 diets: 1) a commercial trout feed deprived of the probiotic and 2) the same diet but with the spores of the probiotic bacteria dissolved in fish oil during the manufacturing of the feed ... | 2013 | 23508031 |
| naturally occurring medicinal mushroom-derived antimicrobials: a case-study using lingzhi or reishi ganoderma lucidum (w. curt.:fr.) p. karst. (higher basidiomycetes). | antibacterial activity of lingzhi or reishi medicinal mushroom, ganoderma lucidum, collected from central india was evaluated against four bacterial pathogens. ethyl alcohol and water extracts of fruit body powder were tested using the disc diffusion method against staphylococcus aureus, klebsiella pneumoniae, bacillus cereus, and pseudomonas aeruginosa. it was noted that the aqueous extract inhibited growth of pathogenic bacteria. the combined effect of fruit body extract with synthetic antibio ... | 2012 | 23510217 |
| antibacterial and anti-inflammatory activities of mycelia of a medicinal mushroom from taiwan, taiwanofungus salmoneus (higher basidiomycetes). | taiwanofungus salmoneus (t.t. chang et w.n. chou) sheng h. wu et al. (shiang-shan-chih), is a medicinal fungus indigenous to taiwan. the mycelium was prepared from submerged culture and its ethanolic and hot-water extracts were used to study its antibacterial and anti-inflammatory activities. gram-positive species (bacillus cereus, listeria monocytogenes, and staphylococcus aureus) and gram-negative species (escherichia coli and salmonella typhimurium) of bacteria were used. in addition to the i ... | 2013 | 23510283 |
| application of asian pumpkin (cucurbita ficifolia) serine proteinase for production of biologically active peptides from casein. | the main objective of this study was to determine potential application of a serine proteinase derived from asian pumpkin for obtaining biologically active peptides from casein. the course of casein hydrolysis by three doses of the enzyme (50, 150, 300 u/mg of protein) was monitored for 24 hours by the determinations of: hydrolysis degree dh (%), free amino group content (μmole gly/g), rp hplc peptide profiles and by polyacrylamide gel electrophoresis. in all hydrolyzates analyzed antioxidant ac ... | 2013 | 23520577 |
| microbial contamination of hospital reusable cleaning towels. | hospital cleaning practices are critical to the prevention of nosocomial infection transmission. to this end, cloth towels soaked in disinfectants are commonly used to clean and disinfect hospital surfaces. cloth cleaning towels have been linked to an outbreak of bacillus cereus and have been shown to reduce the effectiveness of commonly used quaternary ammonium disinfectants. thus, it is important to determine whether the reuse of cloth towels increases the risk of pathogen transmission in hosp ... | 2013 | 23523522 |
| potato crop as a source of emetic bacillus cereus and cereulide-induced mammalian cell toxicity. | bacillus cereus, aseptically isolated from potato tubers, were screened for cereulide production and for toxicity on human and other mammalian cells. the cereulide-producing isolates grew slowly, the colonies remained small (~1 mm), tested negative for starch hydrolysis, and varied in productivity from 1 to 100 ng of cereulide mg (wet weight)(-1) (~0.01 to 1 ng per 10(5) cfu). by dna-fingerprint analysis, the isolates matched b. cereus f5881/94, connected to human food-borne illness, but were di ... | 2013 | 23524678 |
| synthesis of 1-isopropyl-3-acyl-5-methyl-benzimidazolone derivatives and their antimicrobial activity. | a series of n-acylated analogues of 1-isopropyl-3-acyl-5-methyl-benzimidazolone were synthesized. bioassay results indicated that analogues 5-07 and 5-19 exhibited the most potency against bacillus cereus, bacillus subtilis, staphylococcus aureus, escherichia coli and pseudomonas aeruginosa. analogues 5-02, 5-07, 5-12, 5-15, 5-19, 5-20 and 5-25 could effectively inhibit the spore germination of botrytis cinerea. the relationship between structure and their antimicrobial activity (sar) has also b ... | 2013 | 23531538 |
| pathogenic psychrotolerant sporeformers: an emerging challenge for low-temperature storage of minimally processed foods. | sporeforming bacteria are a significant problem in the food industry as they are ubiquitous in nature and capable of resisting inactivation by heat and chemical treatments designed to inactivate them. beyond spoilage issues, psychrotolerant sporeformers are becoming increasingly recognized as a potential hazard given the ever-expanding demand for refrigerated processed foods with extended shelf-life. in these products, the sporeforming pathogens of concern are bacillus cereus, bacillus weihenste ... | 2013 | 23536982 |
| in vitro assessment of functional properties of lactic acid bacteria isolated from faecal microbiota of healthy dogs for potential use as probiotics. | lactic acid bacteria were isolated and identified in the faeces of chinese crested and yorkshire terrier pups and their probiotic features were investigated in vitro. thirty seven isolates were identified as lactobacillus or enterococcus. out of these isolates, 31 were lactic acid bacteria (lab) and belonged to the species lactobacillus reuteri (16/37; 43.3%), lactobacillus animalis (7/37; 18.9%), lactobacillus acidophilus (3/37; 8.1%), lactobacillus sanfranciscensis (2/37; 5.4%), lactobacillus ... | 2013 | 23538205 |
| microbiological examination of ready-to-eat foods and ready-to-bake frozen pastries from university canteens. | during a 10-year inspection survey (2001-2010), a microbiological study of ready-to-eat (rte) foods and ready-to-bake frozen pastries from 15 canteens of the university campus was undertaken to determine their microbiological quality. the cumulative study revealed that the aerobic colony counts for the rte product groups were as follows: from 10(6) to 10(8) cfu/g for 50% of sandwiches; under the detection limit (<10 cfu/g) for 88.6% of oven baked pastries; <10(5) cfu/g for 86.5% of desserts oven ... | 2013 | 23541200 |
| activity and regulation of various forms of cwlj, sleb, and ypeb proteins in degrading cortex peptidoglycan of spores of bacillus species in vitro and during spore germination. | germination of bacillus spores requires degradation of a modified layer of peptidoglycan (pg) termed the spore cortex by two redundant cortex-lytic enzymes (cles), cwlj and sleb, plus sleb's partner protein, ypeb. in this study, in vitro and in vivo analyses have been used to clarify the roles of individual sleb and ypeb domains in pg degradation. purified mature bacillus cereus sleb without its signal sequence (sleb(m)) and the sleb c-terminal catalytic domain (sleb(c)) efficiently triggered ge ... | 2013 | 23543708 |
| germination and proliferation of emetic bacillus cereus sensu lato strains in milk. | the bacillus cereus sensu lato group includes potentially pathogenic bacteria that are ubiquitous in the environment and, importantly, could also be present in food products. this study focuses on emetic isolates which presumably could cause acute food poisoning and emetic syndrome. here, we evaluate the ability of psychrotolerant bacillus weihenstephanensis mc118 (isolated from soil) and mesophilic b. cereus bod3/9 isolated from milk to germinate and multiply at 7 and 30 °c. whereas the rates o ... | 2013 | 23546831 |
| bacillus cereus. | 2013 | 23547067 | |
| microbial diversity and prevalence of foodborne pathogens in cheap and junk foods consumed by primary schoolchildren. | aerobic plate counts (apc), coliforms, bacillus cereus, escherichia coli and eight foodborne pathogens were tested in 1008 cheap and junk foods, including candies, dried cakes, chewing gum, chocolate, dried and seasoned seafood, ice cream, and sugary foods. apcs were positive for 342 samples (33·9%), and the majority of the counts were 2-3 log cfu g(-1) or ml(-1) (average: 1·10 log cfu g(-1) or ml(-1) ). most samples (97·3%) contained no coliforms (average: 0·07 log cfu g(-1) or ml(-1) ). bacill ... | 2013 | 23551123 |
| genetic diversity of bacillus thuringiensis from different geo-ecological regions of ukraine by analyzing the 16s rrna and gyrb genes and by ap-pcr and saaflp. | the bacillus cereus group consists of closely related species of bacteria and is of interest to researchers due to its importance in industry and medicine. however, it remains difficult to distinguish these bacteria at the intra- and inter-species level. bacillus thuringiensis (bt) is a member of the b. cereus group. in this work, we studied the inter-species structure of five entomopathogenic strains and 20 isolates of bt, which were collected from different geo-ecological regions of ukraine, u ... | 2013 | 23556134 |
| synthesis of amino acid conjugates of tetrahydrocurcumin and evaluation of their antibacterial and anti-mutagenic properties. | tetrahydrocurcumin (thc), the hydrogenated and stable form of curcumin, exhibits physiological and pharmacological activities similar to curcumin. a protocol has been developed for the synthesis of novel conjugates of thc with alanine (2a), isoleucine (2b), proline (2c), valine (2d), phenylalanine (2e), glycine (2f) and leucine (2g) in high yields (43-82%). all the derivatives of thc exhibited more potent anti-microbial activity than thc against bacillus cereus, staphylococcus aureus, escherichi ... | 2013 | 23561114 |
| antibacterial activity-guided purification and identification of a novel c-20 oxygenated ent-kaurane from rabdosia serra (maxim.) hara. | the objective of this work was to conduct an activity-guided isolation of antibacterial compounds from rabdosia serra. the ethanol extracts of r. serra leaf and stem were partitioned sequentially into petroleum ether, ethyl acetate, butanol and water fractions, respectively. the ethanol extract of leaf evidenced broad-spectrum antibacterial activity against gram-positive bacterial, including bacillus subtilis, bacillus cereus, staphylococcus aureus, and listeria monocytogenes. the ethyl acetate ... | 2013 | 23561188 |
| differentiation of bacillus anthracis, b. cereus, and b. thuringiensis on the basis of the csab gene reflects host source. | csab gene analysis clustered 198 strains of bacillus anthracis, bacillus cereus, and bacillus thuringiensis into two groups related to mammalian and insect hosts, respectively. mammal-related group i strains also have more s-layer homology (slh) protein genes than group ii strains. this indicates that csab-based differentiation reflects selective pressure from animal hosts. | 2013 | 23563945 |
| bacillus amyloliquefaciens ssp. plantarum strains as potential protective starter cultures for the production of bikalga, an alkaline fermented food. | to identify and screen dominant bacillus spp. strains isolated from bikalga, fermented seeds of hibiscus sabdariffa for their antimicrobial activities in brain heart infusion (bhi) medium and in a h. sabdariffa seed-based medium. further, to characterize the antimicrobial substances produced. | 2013 | 23565829 |
| antibacterial activity of various leaf extracts of merremia emarginata. | to investigate the antibacterial activity and phytochemical screening of the aqueous, methanol and petroleum ether leaf extracts of merremia emarginata (m. emarginata). | 2011 | 23569802 |
| in vitro antimicrobial activity of mangrove plant sonneratia alba. | to investigate the antimicrobial property of mangrove plant sonneratia alba (s. alba). | 2012 | 23569943 |
| microbiological assessment of indoor air of a teaching hospital in nigeria. | to investigate the quality of indoor air of different wards and units of olabisi onabanjo university teaching hospital, sagamu, to ascertain their contribution to infection rate in the hospital. | 2012 | 23569951 |
| biodiversity of aerobic endospore-forming bacterial species occurring in yanyanku and ikpiru, fermented seeds of hibiscus sabdariffa used to produce food condiments in benin. | yanyanku and ikpiru made by the fermentation of malcavene bean (hibiscus sabdariffa) are used as functional additives for parkia biglobosa seed fermentations in benin. a total of 355 aerobic endospore-forming bacteria (aefb) isolated from yanyanku and ikpiru produced in northern and southern benin were identified using phenotypic and genotypic methods, including gtg5-pcr, m13-pcr, 16s rrna, gyra and gyrb gene sequencing. generally, the same 5-6 species of the genus bacillus predominated: bacillu ... | 2013 | 23571124 |
| behavioural pattern of vegetative cells and spores of bacillus cereus as affected by time-temperature combinations used in processing of indian traditional foods. | this study was undertaken to evaluate the behaviour of vegetative cells and spores of four potent native toxigenic food isolates of bacillus cereus as affected by selected time-temperature combinations used in processing of indian traditional foods. the vegetative cells of b. cereus when subjected to sublethal heat treatments, individually, in different heating menstra showed a sigmoidal inactivation pattern, with d-values in the range of 3.45 min at 60 °c to 10.6 min at 56 °c in saline. accordi ... | 2010 | 23572684 |
| survival and growth of foodborne bacterial pathogens in fermenting dough of wadi, a legume-based indigenous food. | wadi is a hollow, brittle, ball- or cone-shaped popular traditional legume-based product of many countries in the indian subcontinent. to prepare wadi, blackgram (phaseolus mungo l.) dhal (dehusked split seeds) was soaked, ground to a soft dough, fermented for 10 h in a closed container, moulded into balls or cones and dried for ~60 h (repeating a cycle of 8 h sun-drying at 29-33 °c and then 16 h shade-drying at 28-30 °c). this study aims at understanding the fate of some selected foodborne bact ... | 2011 | 23572780 |
| reactive oxygen species and the bacteriostatic and bactericidal effects of isoconazole nitrate. | bacterial superinfections often occur in dermatomycoses, resulting in greatly inflamed or eczematous skin. the objective of this study was to evaluate the antibacterial efficacy of isoconazole nitrate (isn), a broad-spectrum antimicrobial imidazole, commonly used to treat dermatomycoses. several gram-positive bacteria minimal inhibitory concentrations (mics) for isn (isn solution or isn-containing creams: travogen or corticosteroid-containing travocort) and ampicillin were obtained using the bro ... | 2013 | 23574020 |
| kinetics of bacillus cereus spore inactivation in cooked rice by combined pressure-heat treatment. | the efficacy of pressure-heat treatment was evaluated for the inactivation of bacillus cereus spores in cooked rice. the spores of b. cereus atcc 9818 were inoculated (1.1 × 10(8) cfu/g) in a parboiled rice product (ph 6.0, water activity of 0.95) and inactivated to an undetectable level (<10 cfu/g) by treatment of 600 mpa and process temperatures of 60 to 85 °c or 0.1 mpa and 85 °c. kinetic inactivation parameters were estimated with linear and nonlinear models. the potential recovery of injure ... | 2013 | 23575123 |
| biosynthesis of silver nanoparticles using actinobacterium streptomyces albogriseolus and its antibacterial activity. | an eco-friendly approach to the synthesis of silver nanoparticles (agnps) by extracellular components of streptomyces albogriseolus has been reported. the isolated actinobacteria were genotypically identified by 16s rrna sequencing analysis, and the morphology was observed by high-resolution scanning electron microscopy. the preliminary characterization of synthesized nanoparticles was carried out using ultraviolet-visible spectrophotometer. the maximum absorption spectra were found to be 409 nm ... | 2012 | 23586961 |
| optimization of cultural conditions using response surface methodology versus artificial neural network and modeling of l-glutaminase production by bacillus cereus mtcc 1305. | response surface methodology and artificial neural network were used to optimize cultural conditions of l-glutaminase production from bacillus cereus mtcc 1305. ann model was superior to rsm model with higher value of coefficient of determination (99.97ann>97.78rsm), predicted distribution coefficient (0.9992ann>0.896rsm) and lower value of absolute average deviation (1.17%ann<18.47%rsm). optimum cultural conditions predicted by ann were ph (7.5), fermentation time (40 h), temperature (34°c), in ... | 2013 | 23587828 |
| foodborne disease outbreaks caused by bacillus cereus, clostridium perfringens, and staphylococcus aureus--united states, 1998-2008. | from 1998 to 2008, 1229 foodborne outbreaks caused by bacillus cereus, clostridium perfringens, and staphylococcus aureus were reported in the united states; 39% were reported with a confirmed etiology. vomiting was commonly reported in b. cereus (median, 75% of cases) and s. aureus outbreaks (median, 87%), but rarely in c. perfringens outbreaks (median, 9%). meat or poultry dishes were commonly implicated in c. perfringens (63%) and s. aureus (55%) outbreaks, and rice dishes were commonly impli ... | 2013 | 23592829 |
| biogenesis of antibacterial silver nanoparticles using the endophytic bacterium bacillus cereus isolated from garcinia xanthochymus. | to synthesize the ecofriendly nanoparticles, which is viewed as an alternative to the chemical method which initiated the use of microbes like bacteria and fungi in their synthesis. | 2012 | 23593575 |
| evaluation of the haccp system in a university canteen: microbiological monitoring and internal auditing as verification tools. | food safety is essential in mass catering. in europe, regulation (ec) no. 852/2004 requires food business operators to put in place, implement and maintain permanent procedures based on hazard analysis and critical control point (haccp) principles. each haccp plan is specifically implemented for the processing plant and processing methods and requires a systematic collection of data on the incidence, elimination, prevention, and reduction of risks. in this five-year-study, the effectiveness of t ... | 2013 | 23594937 |
| identification of tet45, a tetracycline efflux pump, from a poultry-litter-exposed soil isolate and persistence of tet(45) in the soil. | to characterize a tetracycline resistance (tc(r)) determinant, closely related to the tetl efflux pump, in a bhargavaea cecembensis strain previously isolated from a poultry-litter-impacted soil. | 2013 | 23595824 |
| volatile constituents of pinus roxburghii from nepal. | pinus roxburghii sarg. is one of 3 species of pine found in nepal, the oil of which is traditionally used to treat cuts, wounds, boils, and blisters. | 2013 | 23598924 |
| a microbiological assay for sterigmatocystin, t-2 toxin and zearalenone. | a survey was done to find microorganisms useful for assaying sterigmatocystin; t-2 toxin and zearalenone.staphylococcus aureus was found to be sensitive to t-2 toxin and zearalenone;bacillus cereus was found to be sensitive to t-2 toxin only; andescherichia coli was sensitive to sterigmatocystin. the response of the organisms to sterigmatocystin; t-2 toxin and zearalenone was found to be linear between 4 and 100 μg with sterigmatocystin toe. coli; between 2 and 25 μg with t-2 toxin tostaph, aure ... | 1989 | 23605231 |
| concerted action of sphingomyelinase and non-hemolytic enterotoxin in pathogenic bacillus cereus. | bacillus cereus causes food poisoning and serious non-gastrointestinal-tract infections. non-hemolytic enterotoxin (nhe), which is present in most b. cereus strains, is considered to be one of the main virulence factors. however, a b. cereus δnhebc mutant strain lacking nhe is still cytotoxic to intestinal epithelial cells. in a screen for additional cytotoxic factors using an in vitro model for polarized colon epithelial cells we identified b. cereus sphingomyelinase (smase) as a strong inducer ... | 2013 | 23613846 |
| bacillus cereus bacteremia and multiple brain abscesses during acute lymphoblastic leukemia induction therapy. | bacillus cereus can cause serious infections in immunosuppressed patients. this population may be susceptible to b. cereus pneumonia, bacteremia, cellulitis, and rarely cerebral abscess. here we report an 8-year-old boy undergoing induction therapy for acute lymphoblastic leukemia who developed multifocal b. cereus cerebral abscesses, highlighting the propensity for b. cereus to develop cerebral abscesses. a review of the literature over the past 25 years identified another 11 cases (3 children ... | 2014 | 23619116 |
| probing determinants of cyclopiazonic acid sensitivity of bacterial ca2+-atpases. | cyclopiazonic acid (cpa) is a specific and potent inhibitor of the sarcoplasmic reticulum ca(2+)-atpase 1a (serca1a). despite high sequence similarity to serca1a, listeria monocytogenes ca(2+)-atpase 1 (lmca1) is not inhibited by cpa. to test whether a cpa binding site could be created while maintaining the functionality of the atpase we targeted four amino acid positions in lmca1 for mutational studies based on a multiple sequence alignment of serca-like ca(2+)-atpases and structural analysis o ... | 2013 | 23621633 |
| biochemical activities of iranian cymbopogon olivieri (boiss) bor. essential oil. | cymbopogon olivieri essential oil from aerial parts was analyzed by gas chromotography and gas chromatography-mass spectrometry and led to the identification of 38 compounds. piperitone (72.8%), 4-carene (11.8%) and β-himachalene (7.6%) were found as the major components of the oil. the antimicrobial activity was achieved using disc-diffusion and microbroth dilution assays and microbicidal kinetics of oil was screened against different microorganisms. the possible antioxidant activity of oil was ... | 2012 | 23626392 |
| biochemical composition, antimicrobial activities,and anti-quorum-sensing activities of ethanol and ethyl acetate extracts from hypericum connatum lam. (guttiferae). | we studied the polyphenol composition and antioxidant activity of the ethanolic and ethyl acetate extracts of hypericum connatum (guttiferae), in addition to their antimicrobial and antiquorum-sensing (aqs) properties. the extracts exhibited a similar polyphenol content and a notable antioxidant activity, which was stronger in the ethanolic extract (ec50=3.2 μg/ml). ultrahigh-performance liquid chromatography analyses revealed different polyphenol profiles, with rutin and apigen being the main c ... | 2013 | 23631492 |
| drosophila melanogaster selection for survival after infection with bacillus cereus spores: evolutionary genetic and phenotypic investigations of respiration and movement. | laboratory populations of d. melanogaster have been subjected to selection for survival after live spores of b. cereus were introduced as a pathogenic agent. the present study was designed to investigate correlated traits: respiration as a metabolic trait and movement as a behavioral trait. an underlying hypothesis was that the evolution of increased survival after b. cereus infection exerts a metabolic cost associated with elevated immunity and this would be detected by increased respiration ra ... | 2013 | 23634317 |
| process parameters for decolorization and biodegradation of orange ii (acid orange 7) in dye-simulated minimal salt medium and subsequent textile effluent treatment by bacillus cereus (mtcc 9777) rmlau1. | in this study, bacillus cereus isolate from tannery effluent was employed for orange ii dye decolorization in simulated minimal salt broth and textile effluent. most of the physicochemical parameters of textile effluent were above the permissible limits. the strain was highly tolerant to dye up to 500 mg l(-1). increasing dye concentration exerted inhibitory effect on the bacterial growth and decolorization. the maximum decolorization of initial 100 mg dye l(-1) was achieved at optimum ph 8.0 an ... | 2013 | 23636502 |
| effects of copaifera duckei dwyer oleoresin on the cell wall and cell division of bacillus cereus. | the aim of this work was to evaluate the antibacterial activity of copaifera duckei oleoresin and to determine its possible mechanism of action against bacteria of clinical and food interest. the antibacterial activity was determined by agar diffusion and dilution methods; the mechanism of action by transmission electron microscopy and by sds-page; the bioactive compounds by bioautography; and the chemical analysis by gc/ms. oleoresin showed activity against nine of the 11 strains of bacteria te ... | 2013 | 23639986 |
| interaction between bacillus cereus and cultured human enterocytes: effect of calcium, cell differentiation, and bacterial extracellular factors. | bacillus cereus interaction with cultured human enterocytes and the signaling pathways responsible for the biological effects of the infection were investigated. results demonstrate that calcium depletion increases the ability of strains t1 and 2 to invade cells. bacteria associated in greater extent to undifferentiated enterocytes and extracellular factors from strain 2 increased its own association and invasion. inhibitors of signaling pathways related to phosphorylated lipids (u73122 and wort ... | 2013 | 23643123 |
| effect of the temperature of the dipping solution on the antimicrobial effectiveness of various chemical decontaminants against pathogenic and spoilage bacteria on poultry. | the influence of the temperature of the dipping solution on the antimicrobial effectiveness of several chemical poultry decontaminants was assessed. a total of 765 poultry legs were inoculated with gram-positive bacteria (listeria monocytogenes, staphylococcus aureus, bacillus cereus, or brochothrix thermosphacta) or gram-negative bacteria (salmonella enterica serotype enteritidis, escherichia coli, yersinia enterocolitica, or pseudomonas fluorescens). samples were dipped for 15 min in solutions ... | 2013 | 23643125 |
| complex formation between nheb and nhec is necessary to induce cytotoxic activity by the three-component bacillus cereus nhe enterotoxin. | the nonhemolytic enterotoxin (nhe) is known as a major pathogenicity factor for the diarrheal type of food poisoning caused by bacillus cereus. the nhe complex consists of nhea, nheb and nhec, all of them required to reach maximum cytotoxicity following a specific binding order on cell membranes. here we show that complexes, formed between nheb and nhec under natural conditions before targeting the host cells, are essential for toxicity in vero cells. to enable detection of nhec and its interact ... | 2013 | 23646182 |
| food safety knowledge and practices of abattoir and butchery shops and the microbial profile of meat in mekelle city, ethiopia. | to assess the food safety knowledge and practices in meat handling, and to determine microbial load and pathogenic organisms in meat at mekelle city. | 2013 | 23646306 |
| cinnamon oil nanoemulsion formulation by ultrasonic emulsification: investigation of its bactericidal activity. | cinnamon oil (extracted from cinnamomum zeylanicum) nanoemulsion was formulated using tween 80 and water by ultrasonic emulsification. process of nanoemulsion formulation was optimized for parameters such as surfactant concentration, oil-surfactant mixing ratio and emulsification time. surfactant concentration was found to be inversely related to droplet size and directly related to stability. increase in emulsification time resulted in decrease in droplet diameter. stable cinnamon oil formulati ... | 2013 | 23646705 |
| partial purification and characterization of chiio8, a novel antifungal chitinase produced by bacillus cereus io8. | to investigate the distribution of chitinase io8 in bacillus cereus strains, the enhancing effects of the chitinase-producing b. cereus strains on biocontrol potential by dual culture assay and in vivo assay against botrytis cinerea and also the enhancing effects of the chiio8 on disinfectant properties against seed-borne diseases. moreover, the application of chiio8 treatment was also observed to improve the germinative energy. | 2013 | 23647603 |
| contaminated ventilator air flow sensor linked to bacillus cereus colonization of newborns. | we investigated bacillus cereus-positive tracheal aspirates from infants on ventilators in a neonatal intensive care unit. multilocus sequence typing determined a genetic match between strains isolated from samples from a case-patient and from the air flow sensor in the ventilator. changing the sterilization method for sensors to steam autoclaving stopped transmission. | 2013 | 23647973 |
| characterization and complete genome sequence of a virulent bacteriophage b4 infecting food-borne pathogenic bacillus cereus. | bacillus cereus causes food poisoning, resulting in vomiting and diarrhea, due to production of enterotoxins. as a means of controlling this food-borne pathogen, the virulent bacteriophage b4 was isolated and characterized. bacterial challenge assays showed that phage b4 effectively inhibited growth of members of the b. cereus group as well as b. subtilis, and growth inhibition persisted for over 20 h. one-step growth analysis also revealed the host lysis activity of phage b4, with relatively sh ... | 2013 | 23649177 |
| identifying risk factors for eggshell contamination by bacillus cereus group bacteria in french laying farms. | 1. the growth of bacillus cereus group bacteria often limits the shelf-life of pasteurised liquid egg products and is also a putative toxin producer. this study was performed to better understand the route of contamination by b. cereus in egg products by studying the factors affecting eggshell contamination on-farm. 2. eggs were collected in warm and cold seasons in 50 conventional laying farms in western france. egg surfaces were analysed for the presence of b. cereus group bacteria, environmen ... | 2013 | 23650940 |
| the science of salsa: antimicrobial properties of salsa components to learn scientific methodology. | most ethnic foods and cooking practices have incorporated the use of spices and other food additives. many common spices have crossed cultural boundaries and appear in multiple ethnic cuisines. recent studies have demonstrated that many of these ingredients possess antimicrobial properties against common food spoilage microorganisms. we developed a laboratory exercise that promotes the use of scientific methodology to evaluate the effectiveness of salsa components at inhibiting the growth of und ... | 2009 | 23653684 |
| study of the interference between plectranthus species essential oils from brazil and aminoglycosides. | plectranthus is one of the most representative genera of lamiaceae family. in this study, the essential oils from plectranthus amboinicus, plectranthus ornatus, and plectranthus barbatus were investigated for their chemical composition and antimicrobial and modulatory activities. the major components found were carvacrol (54.4%-p. amboinicus) and eugenol (22.9%-p. ornatus e 25.1%-p. barbatus). in vitro antimicrobial activity was conducted against escherichia coli, proteus vulgaris, bacillus cere ... | 2013 | 23662150 |
| design, characterization, teratogenicity testing, antibacterial, antifungal and dna interaction of few high spin fe(ii) schiff base amino acid complexes. | in this study, new fe(ii) schiff base amino acid chelates derived from the condensation of o-hydroxynaphthaldehyde with l-alanine, l-phenylalanine, l-aspartic acid, l-histidine and l-arginine were synthesized and characterized via elemental, thermogravimetric analysis, molar conductance, ir, electronic, mass spectra and magnetic moment measurements. the stoichiometry and the stability constants of the complexes were determined spectrophotometrically. correlation of all spectroscopic data suggest ... | 2013 | 23665616 |