Fig. 4From: Production of rhamnolipids by integrated foam adsorption in a bioreactor systemTime course of differential bacterial (circles) and rhamnolipid (triangles) enrichment in the foam during integrated fermentations. Foam samples were taken at the sampling port on the foam exit at the top of the bioreactor. The values for bacterial and rhamnolipid enrichment were calculated according to Eq. 4Back to article page