نتایج جستجو برای: bacillus subtillis
تعداد نتایج: 56264 فیلتر نتایج به سال:
سابقه و هدف: پروتئازها ردهای از آنزیمها می باشد و به دلیل نقشهای فیزیولوژیک و کاربردهای تجاری موقعیت بسیار ارزشمندی دارند. پروتئازهای قلیایی ایجاد توسط شده توسط گونه های جنس bacillus به دلیل ثبات حرارتی و پایداری که در ph های متفاوت دارند از اهمیت ویژه ای برخوردارند. در این تحقیق که با هدف بررسی مقایسه ای دو روش کشت بسته و نیمه پیوسته در محیط کشت غوطه ور برای تولید آنزیم پروتئاز قلیایی با سو...
leaf-colonizing strain of Bacillus cereus. and Bacillus thuringiensis and in a subsp. kurstaki expressed in Escherichia coli the NRD-12 isolate of Bacillus thuringiensis Insecticidal activity of the CryIIA protein from
Bacillus represents microbes of high economic, medical and biodefense importance. Bacillus strain identification based on 16S rRNA sequence analyses is invariably limited to species level. Secondly, certain discrepancies exist in the segregation of Bacillus subtilis strains. In the RDP/NCBI databases, out of a total of 2611 individual 16S rDNA sequences belonging to the 175 different species of...
WE MAY FORMULATE THE RESULTS AS FOLLOWS: 1. Bacillus paratyphosus in lactose-peptone-water causes a fall in the curve. The explanation of this must be left to later investigations. 2. Bacillus paratyphosus in glucose-peptone-water shows at the beginning a rise similar to that produced by coli, but a fall in the curve follows. 3. If Bacillus coli is added to a 24 hour paratyphosus lactose cultur...
In the study antimicrobial activity of adonitol, arabinose, cellobiose, dulcitol, galactose, glycerol, glucose, inositol, lactose, maltose, mannitol, mannose, mellibiose, raffinose, salicin, sorbitol, sucrose, trehalose and xylose was determined on 96 strains of Bacillus anthracoides, 3; Bacillus badius, 5; Bacillus brevis (3), Bacillus circulans (4), Bacillus coagulans (3), Bacillus lentus (6)...
Sinck the discovery of Eberth-Gaffky Bacillus as the cause of typhoid fever and its differential characters thoroughly worked out by Gaffky, several species of bacteria have been discovered which are very much allied to Eberth's bacillus. Some of these are the cause of fevers of the typhoid type, but the blood of the patients suffering from them does not react with typhoid bacillus. One type of...
Benecke1) was the first to report the isolation of Bacillus chitinovorus, a bacillus which decomposes chitin, from the sea water of Kiel Bay in 1905. Later, the bacillus was collected and studied mainly in Germany and in the United States, taking as sources various materials such as sea mud, sea water, fresh lake water, soil, compost, crustacea etc. However, the study of this bacillus has never...
Bacterial contamination of gelatin is of great concern. Indeed, this animal colloid has many industrial applications, mainly in food and pharmaceutical products. In a previous study (E. De Clerck and P. De Vos, Syst. Appl. Microbiol. 25:611-618), contamination of a gelatin production process with a variety of gram-positive and gram-negative bacteria was demonstrated. In this study, bacterial co...
آنزیم آلفا آمیلاز از سویه باکتریایی bacillus sp.kr8104 از 422 اسید آمینه تشکیل شده و 48 کیلو دالتون جرم دارد. این آنزیم یک آنزیم ترشحی میباشد که توسط این سویه به فضای خارج سلولی ترشح میشود. این آنزیم دارای دو فرم بالغ و نابالغ می باشد. آیا آنزیم آمیلاز به صورت نابالغ توسط باکتری ترشح میشود و سپس در محیط خارج سلولی بالغ میشود یا به صورت بالغ به خارج از سلول ترشح میشود؟ سوالی است که در مورد این آ...
The power of a large number of aniline dyes to restrain the growth of Bacillus tuberculosis and Bacillus typhosus has been determined. Many substances have been found with especial restraining power for the tubercle bacillus under the conditions of the test. This capacity to restrain growth in the case of the tubercle bacillus apparently bears no simple relation to true disinfectant action. Opi...
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