نتایج جستجو برای: bacillus cerus
تعداد نتایج: 56266 فیلتر نتایج به سال:
مقدمه: Bacillus cereus باکتری غذازاد و اسپورداری است که اغلب در فرآوردههای غذایی مانند گوشت، سبزیجات، سوپ، برنج، شیر و سایر فرآوردههای لبنی میتواند تکثیر نماید. استفاده از اسانسهای گیاهی از جمله اسانس آویشن شیرازی و دارچین به عنوان نگهدارندههای طبیعی برای غذا رشد بسیاری از باکتریهای بیماریزا را مهار میکنند. هدف: هدف از این تحقیق ارزیابی اثر ضدمیکروبی اسانس دارچین و آویشن شیرازی علیه ب...
conclusions the present study suggests that the enzyme obtained from strain b. subtilis can be used as feed supplement in animal diet also for reduction of phosphorus pollution problem in areas of livestock production. materials and methods the present study was conducted in biotechnology laboratory, motilal nehru national institute of technology, allahabad, uttar pradesh, india. to isolate phy...
background: bacillus subtilis refers to stretched and sometimes curved, gram-positive, aerobic, and catalase-positive bacilli, which has thermo-resistant endospores. it has been known as a normal flora in the human but can be pathogens in the case of opportunistic. also, it can be the pathogen of nosocomial infections such as wound among hospitalized patients. purpose of this study was to ident...
The integration of probiotics in aquaponics systems is a strategy for mitigating environmental impacts and promoting sustainable agriculture. In order to understand the role probiotics, we investigated effect commercial probiotic mixture Bacillus subtilis B. licheniformis on growth lettuce (Lactuca sativa L.) under deep-water culture integrated with Mozambique tilapia (Oreochromis mossambicus)....
A total of 119 Bacillus thuringiensis strains (83 type strains and 26 native isolates), as well as five B. cereus group species, were analyzed by repetitive extragenic palindromic sequence-based PCR analysis (Rep-PCR) fingerprinting. Primers Bc-REP-1 and Bc-REP-2 were specifically designed according to an extragenic 26-bp repeated sequence found in the six B. cereus group genomes reported. A to...
C1 is an endospore forming gram-positive rod isolated from snow-covered soil in Massachusetts. Colonies were white and feathery in appearance and grew after 22 hours. The isolate was motile with ellipsoidal spores that are subterminal. The strain grew best at temperatures between 5-25 ̊ C with a pH range between 5–7 and NaCl concentration 1% (w/v). Phylogenetic analysis based on 16S rRNA gene se...
Bacillus strains are often isolated from biofilms in the food industries. Previous works have demonstrated that sporulation could occur in biofilms, suggesting that biofilms would be a significant source of food contamination with spores. In this study, we investigated the properties of mono-species and mixed Bacillus biofilms and the ability of Bacillus strains to sporulate inside biofilms. Ba...
The cilia-associated respiratory (CAR) bacillus is an unclassified, gram-negative, motile bacterium that has been implicated as an etiologic agent of respiratory disease in laboratory rodents. In the present study, approximately 1,200 bases of the 16S rRNA gene from three CAR bacillus isolates were sequenced. CAR bacillus-specific primers were designed on the basis of the 16S rRNA gene sequence...
Studies were carried out on the decolorization of azo dyes by Bacillus species from effluent of textile industries. About 10 bacterial strains were isolated from the effluent of textile industries, Bacillus sp. showed remarkable ability in decolorizing the widely utilized azo dyes. Phenotypic characterization and phylogenetic analysis based on 16S rDNA sequence comparisons indicate that these s...
Deoxyribonucleic acid-ribonucleic acid (DNA-RNA) and DNA-DNA hybridization studies were performed to determine the degree of genetic relatedness between Sarcina ureae and several members of the genus Bacillus. DNA-RNA hybridization showed a high degree of homology between S. ureae RNA and DNA from Bacillus species having a similar guanine plus cytosine content. The DNA from other genera of the ...
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