Abstract:

In this study, ultrasonic was used in petroleum ether extraction process of Moringa oleifera seed oil. The effects of four primary factors such as petroleum ether l to raw material ratio (V/W), extraction time, extraction times and ultrasonic frequency on the extraction yield of Moringa oleifera seed oil were investigated in single factor test, and then based on the results of single factor test, orthogonal test was designed to optimized the four factors. The results showed that the optimal petroleum ether l to raw material ratio, extraction time, extraction times and ultrasonic frequency are 8:1 (ml/g), 40 min, 2 and 28 kHz, respectively. Under these conditions, the yield of Moringa oleifera seed oil is 35.85%, which accounts for 96% of the total oil content of Moringa oleifera seed.

Key words: Moringa oleifera seed oil, extraction technology, ultrasound-assisted extraction