Fig. 8From: Large-scale production of tauroursodeoxycholic acid products through fermentation optimization of engineered Escherichia coli cell factoryTypical mass chromatogram of amino acids in prepared products from chicken bile powder. a Amino acids in products from refined chicken bile powder. b Amino acids in products from crude chicken bile powder. c Amino acids in products from RCBP when static process at 37 °C. d Amino acids in natural bear bile powder sampleBack to article page