Fig. 7
Lipid fermentation performance at high lignin concentration produced from combinatorial pretreatment by engineered R. opacus PD630_FA. a cell dry weight and lipid concentration. b lipid content and yield. c lignin concentration and weight loss. Fermentation conditions: 30-g/l soluble substrate concentration, OD 1.0, 1.4-g/l (NH4)2SO4, pH 7.0, 30 °C, 200 rpm, and 96 h. Lignin 1 lignin sample produced from pretreatment Case 1, as described in Table 1