Structural Characterization and In Vitro Antioxidant, Hypoglycemic and Hypolipemic Activities of a Natural Polysaccharide from Liupao Tea

被引：8
|
作者：
Wei, Lu [1 ,2 ]
Huang, Li [1 ]
Du, Lijuan [2 ]
Sun, Qinju [2 ]
Chen, Can [1 ]
Tang, Jie [1 ]
Teng, Jianwen [1 ]
Wei, Baoyao [1 ]
机构：
[1] Guangxi Univ, 1College Light Ind & Food Engn, Nanning 530004, Peoples R China
[2] Guangxi Vocat Univ Agr, 2Institute Food & Pharmaceut Sci, Nanning 530007, Peoples R China
来源：
FOODS | 2023年 / 12卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Liupao tea polysaccharide; structure; biological activity; in vitro; WATER-SOLUBLE POLYSACCHARIDE; ANTITUMOR-ACTIVITY; ALPHA-GLUCOSIDASE; ELUCIDATION; BINDING; ARABINOGALACTAN; EXTRACTION; LEAVES; ACIDS;
D O I：
10.3390/foods12112226
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
This study extracted and purified a natural polysaccharide (TPS-5) that has a molecular weight of 48.289 kDa from Liupao tea, a typical dark tea with many benefits to human health. TPS-5 was characterized as a pectin-type acidic polysaccharide. It has a backbone composed of -> 2,4)- alpha- L-Rhap-(1) -> 4)- alpha- D-GalAp-(1) ->, with a branch composed of -> 5)- alpha- L-Ara(1 -> 5,3)- alpha- L-Ara-(1 -> 3)- beta- D-Gal-(1 -> 3,6)- beta- D-Galp-(1) ->. The in vitro biological activity evaluation illustrated that TPS-5 has free radical scavenging, ferric-ion-reducing, digestive enzyme inhibitory, and bile-salt-binding abilities. These results suggest that TPS-5 from Liupao tea has potential applications in functional foods or medicinal products.
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页数：20
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