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An ultrasonic-extracted arabinoglucan from Tamarindus indica L. pulp: A study on molecular and structural characterizations

文献类型： 外文期刊

作者： Guo, Rui 1 ; Li, Xujiao 1 ; Chen, Xiangyu 2 ; Kou, Yuxing 1 ; Hu, Hao 1 ; Liu, Xin 1 ; Li, Deshun 3 ; Liu, Yanfang 3 ; Ai, L 1 ;

作者机构： 1.Shanghai Jiao Tong Univ, Shanghai Engn Res Ctr Food Safety, Sch Agr & Biol, Shanghai 200240, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Inst Agr Informat & Econ, Beijing 100097, Peoples R China

3.Shanghai Acad Agr Sci, Natl Engn Res Ctr Edible Fungi, Natl R&D Ctr Edible Fungi Proc, Inst Edible Fungi,Minist Agr,Key Lab Edible Fungi, Shanghai 201403, Peoples R China

4.Univ Shanghai Sci & Technol, Sch Med Instrument & Food Engn, Shanghai 200093, Peoples R China

5.Yunnan Maoduoli Grp Food Co Ltd, Yuxi 653100, Peoples R China

6.Shanghai Yecao Biotechnol Co Ltd, Shanghai 200093, Peoples R China

关键词： Tamarindus indica L. pulp; Arabinoglucan; Structural analysis

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：6.953； 五年影响因子：6.737 ）

ISSN： 0141-8130

年卷期： 2020 年 164 卷

页码：

收录情况： SCI

摘要： In this study, an ultrasonic-extracted polysaccharide (nCPTP-55) was obtained with the highest yield (61.08%, w/w) from tamarind pulp, which consisted chiefly of total sugar (85.98%, w/w) with few protein (2.10%, w/w). Monosaccharide analysis showed nCPTP-55 was mainly composed of arabinose (39.19 mol%) and glucose (50.48 mol%) with negligible GlcA (2.05 mol%), indicating the neutral nature of nCPTP-55, which was further elucidated structurally via GC-MS and NMR, i.e., an arabinoglucan composed of -> 3)-beta-D-Glcp-(1 -> backbone with only T-alpha-L-Araf-(1 -> branched at O-4 (27.82%) and O-6 (39.99%), resulting in relatively high A/G ratio (0.68-0.70). Based on MM2 minimized energy, the 3D schematic structures of nCPTP-55 could be considered as structural basis for its conformational behavior, which was preliminarily estimated via HPSEC-MALLS as between compact sphere and loosely hyper-branched chain (rho = 0.84). Therefore, the relationship between molecular structure and conformational behavior was basically established for nCPTP-55, which was in a bid to have a better knowledge of its structure-property and structure-bioactivity relationships potentially required for more applications in food, cosmetic and pharmaceutical fields. (C) 2020 Elsevier B.V. All rights reserved.

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