Optimization of operating parameters for supercritical carbon dioxide   extraction of lycopene by response surface methodology

doi:10.1016/j.jfoodeng.2008.05.006

CORC > 北京大学 > 环境科学与工程学院

	Optimization of operating parameters for supercritical carbon dioxide extraction of lycopene by response surface methodology
	Huang, Wen ; Li, Zhenshan ; Niu, Hai ; Li, Dan ; Zhang, Jin
刊名	journal of food engineering
	2008
关键词	lycopene supercritical CO2 extraction antioxidant activity response surface methodology FLUID EXTRACTION CO2 EXTRACTION TOMATO SKIN OIL CAROTENOIDS SOLUBILITY WASTE
DOI	10.1016/j.jfoodeng.2008.05.006
英文摘要	An experimental design was developed to investigate the effect of operating temperature, operating pressure and extraction time on lycopene yield and extract antioxidant activity (IC50) during supercritical carbon dioxide extraction from tomato pomace. The statistical analysis of the experiment indicated that individual factors such as pressure and temperature, and interactive factors such as pressure with temperature and time had significant effects on lycopene yield. The central composite design showed that the polynomial regression models developed were in good agreement with the experimental results, with R 2 of 0.97 and 0.94 for lycopene yield and extract antioxidant. activity, respectively. The optimal condition for lycopene extraction within the experimental range of the variables studied was at 57 degrees C. 40 MPa, and 1.8 h. At this condition, the predicted amount of lycopene extracted was 28.64 mg in 100 g dried tomato pomace (corresponding to 93% lycopene recovery). In order to investigate the effect of experimental extraction condition on the antioxidant activity of the extract, IC50 was used as an index, which is the concentration that gives 50% reduction in the absorbance of the hydroxyl free radical. The analysis of the results relating to extract antioxiclant activity showed that the individual effects of pressure and time, as well as their interactive effects. were significant. The statistical model gave the optimal point for antioxiclant activity at 57 degrees C, 53 MPa, and 1.8 h of extraction, at which the value Of 1/IC50 was 12.31 ml/mg (i.e. IC50 = 0.081 1mg/ml). (C) 2008 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000257967000007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Chemical; Food Science & Technology; SCI(E); EI; 44; ARTICLE; 3; 298-302; 89
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/247835]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Huang, Wen,Li, Zhenshan,Niu, Hai,et al. Optimization of operating parameters for supercritical carbon dioxide extraction of lycopene by response surface methodology[J]. journal of food engineering,2008.
APA	Huang, Wen,Li, Zhenshan,Niu, Hai,Li, Dan,&Zhang, Jin.(2008).Optimization of operating parameters for supercritical carbon dioxide extraction of lycopene by response surface methodology.journal of food engineering.
MLA	Huang, Wen,et al."Optimization of operating parameters for supercritical carbon dioxide extraction of lycopene by response surface methodology".journal of food engineering (2008).