食品科学2011，Vol.32Issue(24)：158-162,5.
响应曲面法建立超临界CO_2萃取枇杷果仁油脂工艺模型及脂肪酸组成分析
Optimization of Supercritical CO_2 Extraction of Loquat Seed Oil by Response Surface Methodology and Analysis of Fatty Acid Profile
摘要
Abstract
Response surface methodology（RSM） was applied to optimize the extraction of loquat seed oil with supercritical carbon dioxide.A quadratic polynomial mathematical model was set up and validated describing the effects of pressure,temperature and time on oil yield.The fatty acid profile of the oil was analyzed by GC-MS.The optimal extraction conditions were 44.16 MPa,62.02 ℃ and 21 min.Under these conditions,the predicted and actual oil yields showed good consistency,suggesting that the model can fit the experimental data well.A total of 11 fatty acids were identified in the oil,with a relative content of 94.37% in total fatty acids.Linoleic acid（C18：2,45.91%） was the most predominant fatty acid in the oil,followed by palmitic（C16：0,26.01%）,oleic（C18：1,6.19%）,linolenic（C18：3,5.01%）,stearic acid（C18：0,3.64%） and other 6 fatty acids（total about 7.61%）.关键词
枇杷果仁/超临界CO2萃取/响应曲面法/优化/脂肪酸Key words
loquat seed/supercritical carbon dioxide/response surface methodology/optimization/fatty acid分类
轻工纺织引用本文复制引用
杨震峰,李昂,陈伟,蔡艳,张惠恩..响应曲面法建立超临界CO_2萃取枇杷果仁油脂工艺模型及脂肪酸组成分析[J].食品科学,2011,32(24):158-162,5.基金项目
浙江省自然科学基金项目 （）
浙江省重中之重学科开放基金项目 （）
