... . 4.For Industrial Fermentation and Microbiological Medi Brewer's Yeast Extract for Culture Medium and Fermentation GPL-931Brewer ... 's Yeast Extract for Culture Medium and Fermentation GPL ... : Industrial fermentation raw material: Amino acids, antibiotics, nisin, lactic acid, polymer, VC, inosine, ect.Microbiological medium: Pseudomonas, acetobacter, ...