Optimization of Extraction Processing of Soluble Dietary Fiber from Peanut Stems by Microwave Technology

doi:10.7506/spkx1002-6630-201022047

FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (22): 221-225.doi: 10.7506/spkx1002-6630-201022047

• Processing Technology • Previous Articles Next Articles

Optimization of Extraction Processing of Soluble Dietary Fiber from Peanut Stems by Microwave Technology

LI Hong-xia1,2，WANG Shi-qing1,*，YU Li-na2，YANG Qing-li2，LIU Zhi-qiang1，ZHANG Yue-ting1

1. College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China；
2. Shandong Peanut Research Institute, Qingdao 266100, China

Received:2010-02-05 Revised:2010-10-28 Online:2010-11-25 Published:2010-12-29
Contact: WANG Shi-qing1 E-mail:wangshiqing@126.com

Abstract

Abstract:

In this study, peanut stems were used as the raw materials to extract soluble dietary fiber (SDF) through microwaveassisted technology. The optimal microwave-assisted extraction processing conditions were explored by single factor and orthogonal experiments through evaluating the effects of soaking time, microwave treatment time, microwave power, microwave treatment temperature and material-liquid ratio on extraction rate of SDF from peanut stems. Results indicated that the optimal microwaveassisted extraction processing conditions were soaking time of 55 min, microwave treatment time of 4 min, microwave power of 800W, microwave treatment temperature of 90 ℃ and solid-liquid ratio of 1:14. Under the optimal extraction conditions, the extraction rate of SDF was 6.0% and the content of non-starch polysaccharides (NSP) in SDF was 94.68%. The average comprehensive score of SDF was 65.12%. These studies can provide a theoretical reference for the extraction of SDF from peanuts stems.

Key words: peanut stem, microwave, soluble dietary fiber, extraction

CLC Number:

TS255.1

LI Hong-xia1,2，WANG Shi-qing1,*，YU Li-na2，YANG Qing-li2，LIU Zhi-qiang1，ZHANG Yue-ting1. Optimization of Extraction Processing of Soluble Dietary Fiber from Peanut Stems by Microwave Technology[J]. FOOD SCIENCE, 2010, 31(22): 221-225.

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Optimization of Extraction Processing of Soluble Dietary Fiber from Peanut Stems by Microwave Technology

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