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Chemical and rheological properties of polysaccharides from litchi pulp

文献类型： 外文期刊

作者： Huang, Fei 1 ; Liu, Yang 1 ; Zhang, Ruifen 1 ; Dong, Lihong 1 ; Yi, Yang; Deng, Yuanyuan 1 ; Wei, Zhencheng 1 ; Wang, 1 ;

作者机构： 1.Guangdong Acad Agr Sci, Guangdong Key Lab Agr Prod Proc, Key Lab Funct Foods, Sericultural & Agrifood Res Inst,Minist Agr, Guangzhou 510610, Guangdong, Peoples R China

2.Guangdong

关键词： Litchi pulp; Polysaccharide; theological properties

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： 2018 年 112 卷

页码：

收录情况： SCI

摘要： Litchi polysaccharide (IP) was extracted from litchi pulp. Its chemical composition, microstructure, zeta potential, flow and viscoelastic behavior were investigated. LP contained uronic acid (41.18%), neutral sugar (4223%), and protein (2.72%). The monosaccharide composition was mostly arabinose, galactose, and a small amount of mannose, rhamnose and glucose. Scanning electron microscopy (SEM) showed IP was porous network structure. LP concentration had no effect on its zeta potential value while salts reduced them. LP showed shear-thinning behavior during the tested shear rate range. The power-law model was used to evaluate the flow behavior of LP; both its flow behavior index and consistency index changed with different concentrations. The viscosity of LP increased under acidic conditions (pH 2-4), but was stable with heat treatment. The LP dispersion displayed as a liquid viscoelastic behavior in 1% and 2% concentrations and behaved as an elastic gel at 3% concentration as well as the addition of NaCl and CaCl2. (C) 2018 Published by Elsevier B.V.

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