Fig. 5From: Microbial synthesis of poly-γ-glutamic acid (γ-PGA) with fulvic acid powder, the waste from yeast molasses fermentationOptimized fermentation medium and condition for γ-PGA production. a Time-course of γ-PGA fermentation. b Variation of pH value and FA content in the broth. c Influence of FA power on biomass and γ-PGA production in the optimized formulaBack to article page