Comparison of the best extraction conditions that are shown in
Table 6 and Fig. 2, acetone with a seed/solvent ratio of 1/4 for a
period of 60 min and hexane for 60 min at a seed to solvent ratio
of 1/4, respectively, showed that the mean oil content was 23.8%
when acetone was used and the mean oil content was 17.5% when
hexane was used. These results indicate that hexane could be replaced by acetone in ultrasound extraction operations.