Fig. 2(a) shows that the mean oil yields when acetone was used as an extraction solvent were greater than when other solvents were used under all conditions after 15 min of extraction. It was
found that the extraction yield was 19% at a seed to solvent ratio of 1/4, 21.5% at a seed to solvent ratio of 1/6 and decreased to 19.1% at a seed to solvent ratio of 1/8.