Supercritical carbon dioxide extraction of seed oil from Opuntia dillenii Haw. and its antioxidant activity

被引：107

作者：

Liu, Wei ^{[1
]}

Fu, Yu-Jie ^{[1
]}

Zu, Yuan-Gang ^{[1
]}

Tong, Mei-Hong ^{[1
]}

Wu, Nan ^{[1
]}

Liu, Xiao-Lei ^{[1
]}

Zhang, Su ^{[1
]}

机构：

[1] NE Forestry Univ, Minist Educ, Key Lab Forest Plant Ecol, Harbin 150040, Peoples R China

来源：

FOOD CHEMISTRY | 2009年 / 114卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Opuntia dillenii Haw; Seed oil; Supercritical carbon dioxide extraction; Antioxidant activity; DESIGN; CO2; OPTIMIZATION; FRUIT;

D O I：

10.1016/j.foodchem.2008.09.049

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Supercritical carbon dioxide extraction of seed oil from Opuntia dillenii Haw. and its antioxidant activity were investigated in this study. The effects of main operating parameters including extraction pressure, temperature, time and CO2 flow rate on the extraction yield of seed oil were studied. The maximum extraction yield of 6.65% was achieved at a pressure of 46.96 MPa, a temperature of 46.51 degrees C, a time of 2.79 h and a CO2 flow rate of 10 kg/h. The chemical composition of the seed oil was analysed by GC-MS. The main fatty acids were linolenic acid (66.56%), palmitic acid (19.78%), stearic acid (9.01%) and linoleic acid (2.65%). The antioxiclant activity of seed oil was assessed by means of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay and beta-carotene bleaching test. Both methods demonstrated notable antioxiclant activity of seed oil, which is nearly comparable to the references ascorbic acid and butylated hydroxytoluene (BHT). The antioxiclant activity of the seed oil was also found to be concentration-dependent. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：334 / 339

页数：6

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