Fig. 3

Maximum cellular concentrations versus thiosulfate concentrations. In the absence of yeast extract, maximal biomass is obtained with glucose (25 mmol L⁻¹) as energy source. The cultures were performed in triplicate in serum bottles after nine subcultures under the same conditions. In the presence of yeast extract at 1 g L⁻¹, maximal biomass is obtained with glucose (60 mmol L⁻¹). These cultures were performed in triplicate in bioreactor