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Polysaccharides From Loquat (Eriobotrya Japonica) Leaves: Impacts Of Extraction Methods On Their Physicochemical Characteristics And Biological Activities

文献类型： 外文期刊

作者： Fu, Y; Li, F; Ding, Y; Li, HY; Xiang, XR; Ye, Q; Zhang, J; Zhao, L; Qin, W; Gan, RY; Wu, DT

作者机构：

关键词： Loquat; Extraction Method; Polysaccharide; Chemical Structure; Bioactivity

期刊名称： INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

ISSN： 0141-8130

年卷期： 2020 年 146 卷

页码：

收录情况： JCR（2021版）

摘要： Impacts of hot water extraction (HWE), pressurized water extraction (PWE), high-speed shearing homogenization extraction, microwave assisted extraction (MAE), ultrasound assisted extraction (UAE), ultrasound assisted enzymatic extraction, and ultrasound-microwave assisted extraction (UMAE) on physicochemical characteristics and bioactivities of polysaccharides from loquat (Eriobotrya japonica) leaves (LLPs) were investigated. Results showed that the degrees of esterification, contents of phenolics and uronic acids, constituent monosaccharides, apparent viscosities, and molecular weights of LLPs varied by different extraction methods. Bioactivities of LLPs were also significantly affected by different extraction methods. The high molecular weight and high degree of esterification of LLP-W and LIP-P extracted by HWE and PWE, respectively, might contribute to their strong binding capacities. The strong antioxidant activities and inhibitory effects on a-amylase and a-glucosidase were found in LLP-M and LIP-U extracted by MAE and UAE, respectively, which might be attributed to their contents of uronic adds, contents of total phenolics, and molecular weights. The low molecular weights and viscosities of LLP-U and LLP-UM extracted by UMAE might contribute to their strong prebiotic effects. These findings could provide scientific foundations for selecting appropriate extraction methods to obtain LLPs with desired bioactivities for applications in the pharmaceutical and functional food industries. (C) 2020 Elsevier B.V. All rights reserved.

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