Improving the Yield of Crude Oil from Jatropha Curcas Seeds by Solvent Tolerant Fungus in Solid-State Fermentation

Solid-state fermentation was used as a pretreatment before oil extraction to improve the oil extraction yield from Jatropha curcas seed kernels. Maximum oil yield (87.84%,wt) was obtained when Jatropha curcas seed kernels pre-fermented by solvent tolerant fungus at 28degC for 72 h. Oleic and Linoleic were found to be the major components in the crude Jatropha curcas oil, and the C16 and C18 fatty acid accounted for more than 99% (w/w) of total seed oils. When Jatropha curcas seed kernels were pre-fermented, the density and viscosity of crude Jatropha curcas oil were decreased by 1.23% and 84.53%, respectively.