Summary of gases and SCFAs produced in mono- and cocultures of C. minuta, C. timonensis, C. massiliensis, B. thetaiotaomicron, and M. smithii after 6 days of growth. (a to d) H2, CH4, butyrate, and acetate production after 6 days of growth in all mono- and cocultures presented in this study (batches 1 to 4) (Table S1). Points represent the concentration of each biological replicate. (e) Table summarizing the conditions for each culture. The conditions include the gas mixture (H2-CO2 or N2-CO2 at 80:20, vol/vol), the initial pressure (2 × 105 Pa or atmospheric), and the microorganisms inoculated. C, C. minuta; Ct, C. timonensis; Cm, C. massiliensis; B, B. thetaiotaomicron; M, M. smithii; MC, M. smithii and C. minuta; MB, M. smithii and B. thetaiotaomicron; MCm, M. smithii and C. massiliensis; MCt, M. smithii and C. timonensis. Samples inoculated with the same microorganisms are the same color.