Optimization of oil extraction from Leucaena leucocephala seed as an alternative low-grade feedstock for biodiesel production

Abstract

Optimization of oil extraction from Leucaena leucocephala seeds (LLS) using solvent method was studied. 2k factorial technique was employed for optimization of extraction process variables, which include particle size, extraction temperature, extraction time and solvent/solid ratio. Good agreements were achieved between the predicted and experimental values of oil extraction yield (R2=0.9974andAdj-R2=0.9922). Optimization results showed that maximum oil extraction efficiency was achieved under the optimized factor combination of ≤ 0.6 mm particle size, 50 °C extraction temperature, 2 h extraction time and 10:1 v/w solvent/solid ratio.