metal ions are the main impurities of water and media ingredients used in fermentation processes. in this research, the effect of ca+2, co+2, cu+2, fe+2, mg+2, mn+2 and zn+2 as chloride and sulfate salts was studied on the clavulanic acid production and streptomyces clavuligerus growth. all chloride salts had negative effect on clavulanic acid production and no clavulanic acid was produced in t...

Conditioned media were prepared from human peripheral blood monocytes and human umbilical vein endothelial cells. These media were assayed for erythroid burst-promoting activity (BPA) using human peripheral blood monocyte-depleted mononuclear cells as targets and assessing the stimulatory effect of the conditioned media on growth of early erythroid progenitor cells. Both monocytes and endotheli...

Snyder, Irvin S. (University of Iowa, Iowa City), and Nancy A. Koch. Production and characteristics of hemolysins of Escherichia coli. J. Bacteriol. 91:763-767. 1996.-Filterable and nonfilterable hemolysins were produced by Escherichia coli in beef-heart infusion, casein hydrolysate, and chemically defined media. Differences were found among the three media in the time of appearance and in the ...

results however the maximum production of avermectin b1b (17 mg/l) was obtained by using sm2 growth medium containing soluble corn starch, yeast extract, kcl, caco3 and mgso4 which was detected qualitatively by using tlc and quantitatively by hplc. conclusions maximum production was observed with initial medium ph of 7, 10% inoculum size with incubation temperature of 31°c for 10 days of fermen...

It is always a matter of concern regarding the components of media which further affects the amount of desired product. It is necessary to have the number of cells in higher amounts and on the other side the growth of cells should not exceed and affect the quantity of products. With regards to deoxyribonuclease production the enzyme is produced in the later phases of the growth. A controlled pr...

New media production and design of ICT (information and communication technology) as web and internet service are characterized by production of commodities that are produced according to whishes and needs of clients, firms, business and media actors. This mass market production highlights the need for new understandings and perspectives on ICT as compared and contrasted with design of traditio...

Tetracyclines are broad spectrum antibiotic, belong to the family of polyketide antibiotic ,produced by Streptomyces aureofaciens of actinobacteria. The organism Streptomyces aureofaciens 325 was obtained MTCC and cultured on the starch casein media. Screening the organism for the production was confirmed by antibiogram test. The production media was optimized by using carbon sources, and nitro...

This study focuses on the optimisation of cheese whey formulated media for the production of hyaluronic acid (HA) by Streptococcus zooepidemicus. Culture media containing whey (W; 2.1g/L) or whey hydrolysate (WH; 2.4 g/L) gave the highest HA productions. Both W and WH produced high yields on protein consumed, suggesting cheese whey is a good nitrogen source for S. zooepidemicus production of HA...