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Showing 1 to 20 of 37 for “"B. cereus"”.
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A comparison of sulfhydryl active compounds on activation and germination of Bacillus thuringensis spores
… of Bacillus thuringiensis HD-1 and Bacillus cereus 569 were incubated in various sulfhydryl active compounds in order to compare the effects of these compounds on activation and germination. The sulfhydryl active compounds used were oxidized lipoic acid and cystine (S-S), cysteine HCl and …
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Molecular typing of virulence genes in enterotoxigenic Bacillus cereus
Bacillus cereus causes emesis and/or diarrhea following ingestion of contaminated food due to the production of emetic toxins and enterotoxins. SYBR Green I is used as an intercalating dye and its florescence increases as a result of DNA amplification during real-time PCR. A second-derivative plot …
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Untersuchungen zu Bacillus cereus Enterotoxin-Komplexen auf zellulärer Ebene
… paper deals with the in vitro activity of the B. cereus enterotoxin-complexes Hemolysin BL (HBL) and non-hemolytic enterotoxin (Nhe) on cells. For that purpose the cytotoxic and hemolytic activity of crude B. cereus culture supernatants was analyzed in cell culture assays and on blood agar plates. …
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Detection and further characterisation of the toxins and associated genes of Bacillus cereus
The food poisoning bacterium Bacillus cereus produces a large array of potentially pathogenic substances including four haemolysins, three different types of phospholipase C, the emetic toxin (cereulide) and at least five enterotoxins. The relative importance of these metabolites to the …
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Spatial and Temporal Immune Response in House Flies in Response to Ingestion of Bacillus Cereus and Eschericha Coli 0157-H7
… that can be vectored by the house fly. Bacillus cereus is a foodborne pathogen that has also been isolated from the house fly in previous studies. To examine vector potential for these pathogens, house flies were fed green fluorescent protein (GFP)-expressing E. coli 157:H7 or B. cereus and then …
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A study of the effect of dilution rate on bacterial populations
… Coulter counts were made on a pure culture of B. cereus grown in a continuous flow system at various dilution rates. These counts did not follow continuous flow theory for a pure culture in that there was no sharp drop in count at the critical dilution rate but gradual reductions over a range of …
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Effects of high hydrostatic pressure processing on Bacillus cereus spores in fresh blue crab meat (Callinectes sapidus)
… One of the concerns is the presence of Bacillus cereus in fresh blue crab meat. Bacillus cereus is a spore-forming pathogen whose spores survive the customary thermal treatments applied during cooking and pasteurization; therefore it could potentially present a health concern to consumers as the …
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Exosporium Morphogenesis in Bacillus Cereus and Bacillus Anthracis
<p>Bacillus cereus is a Gram-positive spore-forming bacteria that can cause food poisoning and its close relative, Bacillus anthracis is the etiological agent of anthrax. In both cases, the spore, a differentiated cell type in a dormant state, starts the infection process. Thus, the exosporium, …
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The impact of the leather manufacturing process on bacterial growth
… suitable conditions for bacterial (Bacillus cereus, Pseudomonas aeruginosa and Staphylococcus spp.) growth and proliferation. The results showed a significant reduction in the number of B. cereus found during the conventional and BAT unhairing processes. Limited B. cereus growth was observed …
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Structural and functional insights to Bacillus spore germination and toxin engineering for sustainable agriculture
… molecular mechanisms of germination in Bacillus cereus; an important human pathogen associated with foodborne illnesses and opportunistic infections. Specifically, the study investigates the roles of germinant receptors (GRs), the SpoVA CaDPA channel, and the SleB cortex-lytic enzyme, which are …
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Desarrollo de extractos secos con propiedades antioxidantes y antibacterianas de cáscara y semilla de palta Hass (Persea americana) recubiertos con almidón modificado
… Salmonella Enteritidis, S. aureus ATTC, B. cereus y Listeria inocua. En base a la concentración mínima inhibitoria, la cáscara como extracto puro sin microencapsular fue efectivo para todas las cepas, exceptuando E. coli No patógena y el semilla o semilla en todas las bacterias. Con respecto …
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Aplicabilidade de um modelo para estimar o crescimento de Bacillus cereus em arroz-doce, em função da temperatura
… de duas cepas de referência de Bacillus cereus, uma diarréica e outra emética, inoculadas em meio de arroz-doce preparado conforme proporção de ingredientes de uso comum em restaurantes e domicílios. Os ensaios permitiram avaliar o comportamento das duas cepas, submetidas às temperaturas …
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The Infection Control Risks Associated with the Use of Mobile Technology in Healthcare
… Staphylococcus saprophyticus and Bacillus cereus remained after 24 hours and only S. saprophyticus and B. cereus after 7 days. When tested further, B. cereus was shown to remain viable at least 14 days and even to sporulate on the plastic surfaces of a VR headset. Of the several sanitation …
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Polylactic acid/thermoplastic tapioca starch blend incorporated with selected essential oils for active food packaging
… of TPTS incorporated with the EOs on E. coli, B. cereus and S. marcescens was evaluated by inhibitory zone; and packaging effect of PLA/TPTS films coated with the EOs on death rate of microorganisms inoculated on Bahulu cake was investigated. The TPTS was formed by tape casting method, while …
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ΦΩΣΦΟΔΙΕΣΤΕΡΟΛΥΤΙΚΗ ΔΡΑΣΗ ΣΕ ΚΥΤΤΑΡΟΠΛΑΣΜΑ ΣΥΚΩΤΙΟΥ ΠΟΝΤΙΚΟΥ C3HB. ΚΑΘΑΡΙΣΜΟΣ ΚΑΙ ΜΕΛΕΤΗ ΙΔΙΟΤΗΤΩΝ ΤΕΣΣΑΡΩΝ ΕΝΖΥΜΩΝ
… I SHOWS THE SAME SPECIFICITY ASTHE RNASE OF B CEREUS I.E. IT HYDROLYZES BONDS NEIGHBOURING TO PURIMIDIC-NUCLEOSIDES. RNASE II SHOWS THE SAME SPECIFICITY AS T1 RNASE I.E. IT HYDROLYZES BONDNEIGHBOURING TO GUANOSINE. IN THE SECOND PART OF THE THESIS, FOLLOWING INVESTIGATION OF THE …
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Biosynthetic and Functional Studies of Bacillithiol in Gram-positive Bacteria
… some notable pathogens, such as B. anthracis, B. cereus and S. aureus, etc. In 2009, a novel LMW thiol, bacillithiol (BSH), was identified in this class of bacteria and suggested to play analogous function as GSH and MSH.
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Developing elemental and isotope analytical methods for bacterial investigations
… between bacteria B. subtilis and B. cereus. This will also aid in the identification of the production method and determine the geographical origin of the bacterium. The study used Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) to create inorganic fingerprints of the samples in …
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Untersuchungen zur hygienischen und mikrobiologischen Qualität von marinierten Fleischzubereitungen zur Festlegung von Richtwerten bei der Kontrolle des Mindesthaltbarkeitsdatums (MHD)
… the examination of total viable count, B. cereus, Enterobacteriaceae, E. coli, C. perfringens, lactic acid bacteria, coagulase-positive staphylococci and salmonellae. The pH-value was measured by means of a pH-meter if possible. In the case of oil-containing marinades the pH-value was …
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Application of intense pulsed light for surface sterilization and food quality improvement
… vegetative cells of E. coli, S. aureus, B. cereus and B. subtilis. Bacilli and A. niger spores were also susceptible to Flashblast light at somewhat higher fluences. Ultrastructural study with the scanning and transmission electron microscopes indicated that Flashblast™ treated gram-negative …
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Antibacterial Evaluation of Polygonum Multiflorum
… bacterial species, including 5 Gram-positive (B. cereus, B. megaterium, S. epidermidis, S. mutans and S. pyogenes) and 4 Gram-negative (E. aerogenes, E. coli, P. vulgaris and P. aeruginosa). Microtiter assays were carried out to evaluate the antibacterial activity of Chinese Knotweed at 0.5%, 1%, …
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