Dewaxing from Stalks with Petroleum Ether by Different Methods

Abstract

Soxhlet, ultrasonic-, and microwave-assisted extractions for dewaxing from rice, wheat, and corn skin stalks with petroleum ether were compared. The results show that microwave-assisted extraction is the most effective method for dewaxing from the stalks. The yields and compositions of the waxes extracted by different methods were determined gravimetrically and by GC/MS analysis.