Fig. 4From: Microbial synthesis of poly-γ-glutamic acid (γ-PGA) with fulvic acid powder, the waste from yeast molasses fermentationOptimization of fermentation condition for production of γ-PGA. a Effects of pH on cell biomass and γ-PGA production. b Effects of loading liquid volume on cell growth and γ-PGA production. c Effects of inoculation amount on cell growth and γ-PGA productionBack to article page