TAG production from xylose and/or glucose by R. opacus Xsp8. (a-c) Time course kinetics of TAG production as fatty acids. The strain was inoculated in modified defined medium containing 16 g L-1 xylose (a), a mixture of 8 g L-1 xylose and 8 g L-1 glucose (b), or 16 g L-1 glucose (c) with 1 g L-1 (NH4)2SO4 and gentamicin in flasks. Values and error bars represent the mean and s.d. of triplicate experiments. (d) Fatty acids composition profile as % of total fatty acids (g/g) of R. opacus growing in the defined medium containing xylose (a), xylose and glucose mix (b), or glucose (c) for 4 days. Data are results of triplicate experiments, ±s.d.