Additional file 1 of Optimization of an economical medium composition for the coculture of Clostridium butyricum and Bacillus coagulans

Additional file 1.Sequencing results of 16S rRNA of four B. coagulans; Table S1 The optimized results of composite inorganic salts; Table S2 Factors and levels of orthogonal experiment design of composite inorganic salts; Table S3 The orthogonal experiment design table (L9 (32)) and results analysis of composite; Fig. S1 Growth characteristics and pH change trend of strains C. butyricum DL-1; Fig. S2 Growth characteristics and pH change trend of strains B. coagulans ZC2-1; Fig. S3 The effect of nitrogen source sorts on the viable counts and spore yield of C. butyricum.