Fig. 4From: Optimization of Clostridium beijerinckii semi-solid fermentation of rape straw to produce butyric acid by genome analysisEffects of different fermentation conditions on butyric acid production by BRM001 (A L-cysteine hydrochloride, B yeast powder, C tryptophan; D metal ion mother liquor, E biotin, F NaCl, G NaSO4; H KH2PO4; I K2HPO4)Back to article page