Properties of soluble dietary fiber-polysaccharide from papaya peel obtained through alkaline or ultrasound-assisted alkaline extraction
文献类型: 外文期刊
第一作者: Zhang, Weimin
作者: Zhang, Weimin;Zeng, Guanglin;Pan, Yonggui;Chen, Wenxue;Chen, Haiming;Huang, Wuyang;Li, Yuansong;Zhang, Weimin;Chen, Haiming
作者机构:
关键词: Carica papaya;Soluble dietary fiber;Ultrasound-assisted alkaline extraction;Optimization;Comparison
期刊名称:CARBOHYDRATE POLYMERS ( 影响因子:9.381; 五年影响因子:8.678 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Soluble dietary fiber (SDF) from the peel of papaya (Carica papaya Linn.) was recovered through alkaline extraction (alkaline-extracted SDF, a-SDF) and ultrasound-assisted alkaline extraction (ultrasound treated SDF, u-SDF) processes, and the composition, structure and properties of the extracts were compared. The optimal parameters for obtaining the maximum extraction yield of u-SDF were evaluated through response surface methodology. Under optimal conditions, the maximum yield of u-SDF was 36.99%, and u-SDF had a lower total amino acid content but a higher essential amino acid (16.18%) than a-SDF. A monosaccharide analysis indicated that the primary sugars in a-SDF and u-SDF were neutral sugars and pectic saccharides, respectively. An X-ray diffraction analysis confirmed that u-SDF was less crystalline than a-SDF. Moreover, a thermal analysis indicated that u-SDF exhibited higher thermal stability. In addition, u-SDF exhibited higher water-holding, oil-holding and swelling capacities than a-SDF. These results indicate that papaya peel is a potential inexpensive source of natural dietary fiber and a potential functional food ingredient. (C) 2017 Elsevier Ltd. All rights reserved.
分类号: O629`Q53
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