Figure 1

Growth of P7 cells in the basal medium containing different combinations of yeast extract (YE) and carbon sources (Test 1, Table 1). X-axis legends: YE free (Fru/Glu): YE-free and 5 g/L glucose or fructose; YE (carbon free): 1 g/L YE without carbon source; YE (Fru): 1 g/L YE and 5 g/L fructose; YE (Glu): 1 g/L YE and 5 g/L glucose. YE (Glu & syngas): 1 g/L YE, 5 g/L glucose, and 1 g/L NaHCO3 with syngas mixture in headspace (gas to liquid ration is 2:1).