Characterization of polysaccharide structure in Citrus reticulate 'Chachi' peel during storage and their bioactivity

被引：41
作者：
Zhou, Ting [1 ,2 ]
Jiang, Yueming [1 ,2 ]
Wen, Lingrong [1 ,2 ]
Yang, Bao [1 ,2 ]
机构：
[1] Chinese Acad Sci, South China Bot Garden, Guangzhou 510650, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CARBOHYDRATE RESEARCH | 2021年 / 508卷
关键词：
Glycosidic linkage; Molecular weight; NMR; Pectin; Immunomodulatory activity; ARABINOGALACTAN PROTEINS; STRUCTURE IDENTIFICATION; PECTIC POLYSACCHARIDES; INHIBITION; NOBILETIN; STRESS; CELLS;
D O I：
10.1016/j.carres.2021.108398
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The peel of Citrus reticulate 'Chachiennsis' (Chachi) is widely accepted as a functional food. It is generally recognized that its health benefits are dependent on storage time. However, the chemicals responsible for this phenomonon remain unclear. As bioactive polysaccharides are dominant in Chachi, Chachi polysaccharides with various storage times (5-20 years) were prepared. The monosaccharide composition was analyzed by GC-MS. NMR data revealed that Chachi polysaccharides were mainly consisted of arabinogalacturonan and another pectin with side chain of -> 4)-beta-D-Galp-(1 -> . alpha-L-Araf-(1 ->, -> 5)-alpha-L-Araf-(1 ->, -> 4)-alpha-D-GalpA-(1 ->, -> 4)-alpha-D-GalpAMe-(1 ->, -> 4)-beta-D-Galp-(1 -> and -> 4)-beta-D-Glcp-(1 -> were detected. The molecular weight of Chachi polysaccharides decreased along with the extension of storage time. However, the basic structure characteristics remained stable. The immumomodulatory activities of Chachi polysaccharides were improved as the storage time extended. The change of molecular weight was responsible for the improved immunomodulatory activity. The results explained how polysaccharides contributed to the enhanced health benefits of Chachi during storage.
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页数：11
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