Chemical composition and anti-cholesterol activity of tea (Camellia sinensis) flowers from albino cultivars
文献类型： 外文期刊
作者： Gao, Ying 1 ; Han, Zhen 2 ; Xu, Yong-Quan 1 ; Yin, Jun-Feng 1 ;
作者机构： 1.Chinese Acad Agr Sci, Natl Engn Res Ctr Tea Proc, Key Lab Tea Biol & Resources Utilizat, Tea Res Inst, Hangzhou, Peoples R China
2.Agrotech Extens Stn Ningbo City, Ningbo, Peoples R China
关键词： tea flowers; albino cultivars; chemical composition; anti-cholesterol; polyphenols; amino acids; saponins
期刊名称：FRONTIERS IN NUTRITION （ 影响因子：5.0； 五年影响因子：5.7 ）
ISSN： 2296-861X
年卷期： 2023 年 10 卷
页码：
收录情况： SCI
摘要： Albino tea cultivars are mutant tea plants with altered metabolisms. Current studies focus on the leaves while little is known about the flowers. To evaluate tea flowers from different albino cultivars, the chemical composition and anti-cholesterol activity of tea flowers from three albino cultivars (i.e., Baiye No.1, Huangjinya, and Yujinxiang) were compared. According to the results, tea flowers from Yujinxiang had more amino acids but less polyphenols than tea flowers from the other two albino cultivars. A reduced content of procyanidins and a high chakasaponins/floratheasaponins ratio were characteristics of tea flowers from Yujinxiang. In vitro anti-cholesterol activity assays revealed that tea flowers from Yujinxiang exhibited stronger activity in decreasing the micellar cholesterol solubility, but not in cholesterol esterase inhibition and bile salt binding. It was noteworthy that there were no specific differences on the chemical composition and anti-cholesterol activity between tea flowers from albino cultivars and from Jiukeng (a non-albino cultivar). These results increase our knowledges on tea flowers from different albino cultivars and help food manufacturers in the cultivar selection of tea flowers for use.
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