background: alginate is a linear polysaccharide consisting of guluronate (polyg) and mannuronate (polym) subunits. methods: in the initial screening of alginate-degrading bacteria from soil, 10 isolates were able to grow on minimal medium containing alginate. the optimization of cell growth and alginate lyase (algl) production was carried out by the addition of 0.8% alginate and 0.2-0.3 m nacl ...

Escherichia coli KG980, a vitamin B6 auxotroph derived from E. coli K12, utilized the three unphosphorylated forms of vitamin B6, more or less effectively, for growth, but did not utilize the three phosphate forms at concentrations ranging from 10(-7) to 10(-5) M in the minimum medium of Davis and Mingioli. The bacterium, however, utilized the phosphate forms, although less effectively than the...

using environmental-friendly methods in order to remove or reduce oil pollutants and their derivations in the environment are developing. in this study, the biodegrading ability of bacillus subtilis .sp which has been separated from oil-polluted soil was examined. it was revealed that it can reduce surface tension of growth medium and produce bio-surfactant at 37 and 20 degrees centigrade. also...

Modified New York City (MNYC) medium and PPLO medium without methylene blue (PPLO agar) were compared for their ability to support the growth of Mycoplasma pneumoniae from clinical specimens. Pharyngeal specimens were collected from 1,070 college students who visited the Syracuse University Student Health Center. Of these patients, 623 were symptomatic for respiratory infection, and the remaini...

Given the increasing prevalence of cryptococcosis caused by Cryptococcus gattii (serotypes B and C) strains, there is a need for rapid and reliable tests that discriminate C. gattii from Cryptococcus neoformans (serotypes A, D, and AD). Seventy-two C. neoformans strains, sixty-seven C. gattii strains, and five Candida albicans strains were analyzed for their ability to grow and produce pigment ...

Low levels of tyrosine and phenylalanine alter the metastatic phenotype of B16BL6 murine melanoma. In this study, we investigated expression and secretion of fibroblast growth factor-like (FGF-like) and transforming growth factor beta-like (TGF beta-like) molecules as well as the biological effect of basic FGF (bFGF) and TGF beta 1 on high (NDP) and low (LTP) metastatic variants of B16BL6 melan...

E. A. Ghazy, M.G. Mahmoud, M. S. Asker, M. N. Mahmoud, M. M. Abo Elsoud and M. E. Abdel Sami Microbial Biotechnology Department, National Research center, Dokki, Cairo, Egypt [email protected] Abstract: Sulfate-reducing bacteria (SRB) represent a class of anaerobic microorganisms that conduct dissimulatory sulfate reduction to obtain energy. The present study aimed to detect and control SRB...