Chemical Composition and Antioxidant Activities of Polysaccharides from Yingshan Cloud Mist Tea.

Abstract:

:The study was designed to investigate the chemical composition and antioxidant activities of polysaccharides from Yingshan Cloud Mist Tea. The chemical composition of green tea polysaccharides (GTPS) was analyzed by Fourier-transform infrared (FT-IR) spectroscopy, scanning electron microscope (SEM), thermogravimetric (TGA), gas chromatograph (GC), and high-performance gel-permeation chromatography (HPGPC). Then, the antioxidant activities in vitro of GTPS, effects of GTPS on body weight, and the antioxidant activities in chickens were studied. The results showed that GTPS were composed of rhamnose (Rha), arabinose (Ara), xylose (Xyl), mannose (Man), glucose (Glu), and galactose (Gal) in a molar ratio of 11.4 : 26.1 : 1.9 : 3.0 : 30.7 : 26.8 and the average molecular weight was 9.69 × 104 Da. Furthermore, GTPS exhibited obvious capacity of scavenging DPPH radical, hydroxyl radical, and superoxide radical and enhanced the ferric-reducing power in vitro. Last, GTPS significantly increased the body weight of chickens, enhanced the T-AOC, SOD, and GSH-Px level, and decreased the content of MDA in chickens. The results indicated that GTPS might be a kind of natural antioxidant, which had the potential application in feed industry.

journal_name

Oxid Med Cell Longev

authors

Li X,Chen S,Li JE,Wang N,Liu X,An Q,Ye XM,Zhao ZT,Zhao M,Han Y,Ouyang KH,Wang WJ

doi

10.1155/2019/1915967

subject

Has Abstract

pub_date

2019-08-21 00:00:00

pages

1915967

eissn

1942-0900

issn

1942-0994

journal_volume

2019

pub_type

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