文献类型： 外文期刊

作者： Zhang, Weimin ¹ ; Zeng, Guanglin ¹ ; Pan, Yonggui ¹ ; Chen, Wenxue ¹ ; Huang, Wuyang ² ; Chen, Haiming ¹ ; Li, Yuanson ¹ ;

作者机构： 1.Hainan Univ, Coll Food Sci & Technol, Haikou 570228, Hainan, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Farm Prod Proc, Nanjing, Jiangsu, Peoples R China

3.Huazhong Agr Univ, Coll Food Sci & Technol, Wuhan 430070, Hubei, Peoples R China

4.HAAS, Agr Prod Proc & Design Inst, Haikou 571100, Hainan, Peoples R China

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 ）

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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.