Fig. 6
Effects of methanol concentration (a), ammonium sulfate concentration (b), fermentation temperature (c), initial pH of medium (d), different oxygen carriers (e), and sodium chloride concentration (f) on XJLW biomass, PHB and CoQ10 biosynthesis. Significant differences from selected group (7.918 g L-1 methanol group for a, 0.5 g L-1 (NH4)2SO4 group for b, 30 °C group for c, pH 7.0 group for d, Tween 80 group for e, and 1.0 g L-1 sodium chloride group for f, respectively) are indicated by *p < 0.05; **p < 0.01