响应面法优化超临界CO2 萃取火龙果籽油工艺

doi:10.7506/spkx1002-6630-201210019

食品科学 ›› 2012, Vol. 33 ›› Issue (10): 92-97.doi: 10.7506/spkx1002-6630-201210019

响应面法优化超临界CO2 萃取火龙果籽油工艺

王秋玲1，莫建光2,*，谢一兴2

1.广西大学轻工与食品工程学院 2.广西分析测试研究中心

出版日期:2012-05-25 发布日期:2012-05-07
基金资助:
广西食品药品及公共安全检测技术服务平台建设项目(08-05-01D)

Optimization of Supercritical CO2 Extraction of Pitaya Seed Oil by Response Surface Methodology

WANG Qiu-ling1，MO Jian-guang2,*，XIE Yi-xing2

(1. Institute of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China； 2. Research Center of Analysis and Testing of Guangxi Province, Nanning 530022, China)

Online:2012-05-25 Published:2012-05-07

摘要/Abstract

摘要： 采用响应面法优化超临界二氧化碳萃取工艺提取火龙果籽油，用Design Expert软件对试验数据进行分析，并用气相色谱-质谱法对萃取所得火龙果籽油进行成分分析。结果表明：萃取时间、萃取压力、萃取温度对火龙果籽油超临界CO2萃取工艺影响显著，其最佳提取工艺参数为萃取压力25MPa、萃取温度40℃、萃取时间3.5h，火龙果籽油萃取得率为30.21%。火龙果籽油中脂肪酸主要成分以不饱和脂肪酸为主，占总脂肪酸含量的74.64%，其中亚油酸及其异构体为46.91%，油酸及其异构体为25.36%；饱和脂肪酸以棕榈酸为主，棕榈酸及其异构体占总脂肪酸含量的21.10%。火龙果籽油可以作为一种食品保健油进行开发。

关键词: 火龙果籽油, 超临界二氧化碳, 萃取, 响应面法, 气相色谱-质谱法(GC-MS), 脂肪酸, 理化性质

Abstract: The extraction process for pitaya seeds oil via supercritical carbon dioxide was optimized by response surface methodology (RSM), the test data were analyzed by software Design Expert and the chemical compositions of pitaya seed oil was analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that supercritical CO2 extraction process were impacted significantly by extraction time, pressure, and temperature; the optimum extraction parameters were extraction pressure at 25 MPa, extraction temperature at 40 ℃, and extraction time for 3.5 h the oil extraction yield was 30.21%. The main fatty acids of pitaya seed oil were unsaturated fatty acids, which accounted for 74.64% of total fatty acids, and linoleic acid and its isomer were 46.91%, oleic acid and its isomer were 25.36%; saturated fatty acids were dominated by palmitic acid, and palmitic acid and its isomer consisted of 21.10%. Pitaya seed oil can be used as healthy oil for development.

Key words: pitaya seed oil, supercritical carbon dioxide extraction, response surface method, gas chromatography-mass spectrometry (GC-MS), fatty acid, physical and chemical properties

中图分类号:

TS225.6

王秋玲，莫建光，谢一兴. 响应面法优化超临界CO2 萃取火龙果籽油工艺[J]. 食品科学, 2012, 33(10): 92-97.

WANGQiu-ling，MOJian-guang，XIEYi-xing. Optimization of Supercritical CO2 Extraction of Pitaya Seed Oil by Response Surface Methodology[J]. FOOD SCIENCE, 2012, 33(10): 92-97.

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响应面法优化超临界CO2 萃取火龙果籽油工艺

Optimization of Supercritical CO2 Extraction of Pitaya Seed Oil by Response Surface Methodology

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