نتایج جستجو برای: peptones

تعداد نتایج: 1533  

Journal: :Applied and environmental microbiology 1987
A DePaola C A Kaysner R M McPhearson

Of 222 Vibrio cholerae isolates from diverse clinical and environmental sources, 219 produced visible growth in alkaline peptone broth when incubated overnight at 42 degrees C. In field trials conducted to compare enrichment at incubation temperatures of 42 and 35 degrees C, significantly higher rates of isolation (P less than 0.05) and recovery (P less than 0.01) of V. cholerae from oysters we...

Journal: :Applied and environmental microbiology 1989
W P Xie C J Mirocha R J Pawlosky Y C Wen X G Xu

One fluorescent compound previously named TDP-2 was isolated and purified from a rice culture of Fusarium equiseti (Alaska 2-2). Mass spectral and nuclear magnetic resonance data indicated that it is a C-3'-N-acetyl derivative of fusarochromanone, a newly discovered mycotoxin. Time course studies of synthesis of these two compounds on autoclaved rice and Czapek-Dox medium enriched with soybean ...

Journal: :Applied and environmental microbiology 2011
Detmer Sipkema Klaske Schippers Wouter J Maalcke Yu Yang Sina Salim Harvey W Blanch

Three methods were examined to cultivate bacteria associated with the marine sponge Haliclona (gellius) sp.: agar plate cultures, liquid cultures, and floating filter cultures. A variety of oligotrophic media were employed, including media with aqueous and organic sponge extracts, bacterial signal molecules, and siderophores. More than 3,900 isolates were analyzed, and 205 operational taxonomic...

2003
T. E. WILSON H. H. RAMSEY

In an earlier report from this laboratory (Wilson and Ramsey, 1955) an antagonism between chloramphenicol and complex materials (yeast extract, proteose peptone #3) was noted. It was suggested that the antagonism observed was possibly due to stimulation of growth, rather than to direct antagonism of the antibiotic. In order to examine more critically the respective roles of stimulation and dire...

2015
Esabi Basaran Kurbanoglu Murat Ozdal Ozlem Gur Ozdal Omer Faruk Algur

This work addresses the production of prodigiosin from ram horn peptone (RHP) using MO-1, a local isolate in submerged culture. First, a novel gram-negative and rod-shaped bacterial strain, MO-1, was isolated from the body of the grasshopper (Poecilemon tauricola Ramme 1951), which was collected from pesticide-contaminated fields. Sequence analysis of 16S rDNA classified the microbe as Serratia...

Journal: :Journal of molecular microbiology and biotechnology 2000
C Madzak B Tréton S Blanchin-Roland

The industrial yeast Yarrowia lipolytica secretes high amounts of an alkaline extracellular protease encoded by the XPR2 gene. The industrial use of the XPR2 promoter was however hindered by its complex regulation. We designed hybrid promoters, based on tandem copies of the XPR2 promoter UAS1 region. In contrast to native XPR2 promoter, these hybrid promoters were not repressed by the preferred...

2016
Ushakiranmayi Managamuri Muvva Vijayalakshmi Sudhakar Poda V. S. Rama Krishna Ganduri R. Satish Babu

Response surface methodology-based central composite design on five variables incubation time, pH, temperature, sucrose concentration, and soya peptone concentration was employed for optimization of the production of bioactive compounds by Nocardiopsis litoralis strain VSM 8. The main quadratic effects and interactions of the five variables on the production of bioactive metabolites were invest...

Journal: :Applied microbiology 1967
S Ueda N Nanri

A culture of a coliform bacteria isolated from soil produced isoamylase when grown in peptone-maltose-salts broth. The enzyme preparation was partially purified. Its similarity with isoamylase produced by Aerobacter aerogenes was established by studying its action upon various polysaccharides. A study of the organism producing isoamylase showed that it differed from A. aerogenes in some of its ...

Journal: :Journal of clinical pathology 1960
R G HUNTSMAN B A HURN H LEHMANN

Previous observations on the effect of oral magnesium and peptone on thrombin generation time are examined. The smallest amounts of magnesium and peptone regularly producing a significant shift demonstrable after one hour are 0.25 g. magnesium and 15 g. peptone. The oral effect can be reproduced by the intravenous injection of magnesium. The minimum amount required is 50 mg. The effect is trans...

Journal: :Journal of bacteriology 1972
G R Vela R S Rosenthal

Pleomorphism in cultures of Azotobacter vinelandii was induced by addition of Difco peptone to the growth medium. Under the conditions of the study, 5% peptone gave rise to transient forms described as "fungoid cells" which were osmotically fragile. After some 48 hr of culture, they became osmotically stable and resumed a more typical morphology. It was shown that the pleomorphism-inducing prin...

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