Optimization of Ultrasonic-assisted Extraction of Coix lacryma-jobi Seed Ester Using Response Surface Methodology

doi:10.7506/spkx1002-6300-201008011

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (8): 46-50.doi: 10.7506/spkx1002-6300-201008011

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Optimization of Ultrasonic-assisted Extraction of Coix lacryma-jobi Seed Ester Using Response Surface Methodology

CHEN Yan1,2，WANG Wen-ping1,2,*，QIU Shu-yi1,2，WU Guo-qing1,2，ZHOU Liang-you1，HUANG Xiao-huan1

1. College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550003, China；
2. Guizhou Provincial Key Laboratory of Fermentation Engineering and Biological Pharmacy, Guiyang 550003, China

Received:2009-05-18 Online:2010-04-15 Published:2010-12-29
Contact: WANG Wen-ping1 E-mail:wwp931002@163.com

Abstract

Abstract:

The purpose of the present study was to achieve an optimal ultrasonic-assisted extraction of Coix lacryma-jobi seed ester. On the basis of single factor experiments, a three-variable, three-level central composite design leading to 17 experiments combined with response surface analysis was employed to optimize key technological parameters (namely, ultrasonic treatment time, extraction temperature and material/liquid ratio) affecting Coix lacryma-jobi seed ester yield. In the optimization, a mathematical regression model describing Coix lacryma-jobi seed ester yield as a function of the parameters was created. Results indicated that the optimal values of the parameters were as follows: ultrasonic treatment time 50 min, ultrasonic power 300 W, extraction temperature 50 ℃ and material/liquid ratio 1:10 (g/mL). Under such conditions, an optimal Coix lacryma-jobi seed ester yield of 5.798% was obtained.

Key words: Coix lacryma-jobi seed ester (CLSE), ultrasonic-assisted extraction, response surface methodology (RSM)

CLC Number:

S519

CHEN Yan1,2，WANG Wen-ping1,2,*，QIU Shu-yi1,2，WU Guo-qing1,2，ZHOU Liang-you1，HUANG Xiao-huan1. Optimization of Ultrasonic-assisted Extraction of Coix lacryma-jobi Seed Ester Using Response Surface Methodology[J]. FOOD SCIENCE, 2010, 31(8): 46-50.

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Optimization of Ultrasonic-assisted Extraction of Coix lacryma-jobi Seed Ester Using Response Surface Methodology

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