Fig. 5
Combined effects of different diets and oxygen concentrations on the steady-state levels of SCFAs and succinate. Bulk carbohydrate and amino acid concentrations were varied according to the diet and the bulk oxygen concentration was set to a fixed value between 0 and 5x10 −3 mM. a Total SCFA concentration averaged across the biofilm. b–d Acetate, propionate and butyrate levels averaged across the biofilm. e Succinate concentration averaged across the biofilm. f Spatial profile of the F. prausnitzii butyrate synthesis rate at a bulk oxygen concentration of 3x10 −3 mM