Optimization of ultrasonic-assisted extraction of pomegranate (Punica granatum L.) seed oil

作者：Tian, Yuting; Xu, Zhenbo; Zheng, Baodong^*; Lo, Y. Martin

来源：Ultrasonics Sonochemistry, 2013, 20(1): 202-208.

DOI：10.1016/j.ultsonch.2012.07.010

• Pomegranate seed oil
• Ultrasonic-assisted extraction
• Fatty acids
• Punicic acid

The effectiveness of ultrasonic-assisted extraction (UAE) of pomegranate seed oil (PSO) was evaluated using a variety of solvents. Petroleum ether was the most effective for oil extraction, followed by n-hexane, ethyl acetate, diethyl ether, acetone, and isopropanol. Several variables, such as ultrasonic power, extraction temperature, extraction time, and the ratio of solvent volume and seed weight (S/S ratio) were studied for optimization using response surface methodology (RSM). The highest oil yield, 25.11% (w/w), was obtained using petroleum ether under optimal conditions for ultrasonic power, extraction temperature, extraction time, and S/S ratio at 140 W, 40 degrees C, 36 min, and 10 ml/g, respectively. The PSO yield extracted by UAE was significantly higher than by using Soxhlet extraction (SE; 20.50%) and supercritical fluid extraction (SFE; 15.72%). The fatty acid compositions were significantly different among the PSO extracted by Soxhlet extraction, SFE, and UAE, with punicic acid (>65%) being the most dominant using UAE.

• 出版日期2013-1
• 单位福建农林大学