多糖
抗氧化剂
化学
体外
果胶
铁
生物化学
生物活性
酶
食品科学
传统医学
有机化学
医学
作者
Lu Wei,Li Huang,Lili Du,Qinju Sun,Can Chen,Jie Tang,Jianwen Teng,Baoyao Wei
出处
期刊:Foods
[MDPI AG]
日期:2023-05-31
卷期号:12 (11): 2226-2226
被引量:4
标识
DOI:10.3390/foods12112226
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)- α- L-Rhap-(1) → 4)- α- D-GalAp-(1) →, with a branch composed of → 5)- α- L-Ara-(1 → 5,3)- α- L-Ara-(1 → 3)- β- D-Gal-(1 → 3,6)- β- 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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