In order to benchmark optimal UAE condition against a conventional
extraction technique, solid/liquid extractions were carried
out according to the method of Shan et al. [27] with slight modifications.
Briefly, dried and ground samples (7 g) were mixed with
70 mL methanol and shaken for 17 min at room temperature
(23 C). The sample suspension was then immediately filtered
through Buchner funnel (pore size: 1.0 lm)