Optimization of process parameters for cephalosporin C production under solid state fermentation from Acremonium chrysogenum

摘要

Production of cephalosporin C employing Acremonium chrysogenum ATCC 48272 under solid state fermentation was optimized. Different substrates like wheat bran, wheat rawa, bombay rawa, barley and rice bran were studied to optimize the best substrate. Wheat rawa showed the highest antibiotic yield. Physical and chemical parameters were optimized. The maximum productivity of cephalosporin C (22281 μg/g) was achieved by employing wheat rawa and with optimized process parameters including 1% w/w soluble starch and 1% w/w yeast extract as additives, incubation period of 5 days, incubation temperature at 30℃, 1.5:10 (v/w) ratio of calt solution to weight of wheat bran, inoculum level 10% v/w, moisture content of solid substrate 80% and pH 6.5.