文献类型： 外文期刊
作者： Liu, Yuqian 1 ; Teng, Teng 1 ; Ye, Kun 2 ; Zhou, Guolan 3 ; Yang, Xiulong 4 ; Zhao, De-Gang 1 ; Zhao, Yichen 1 ;
作者机构： 1.Guizhou Univ, Coll Tea Sci, Key Lab Plant Resources Conservat & Germplasm Inn, Minist Educ, Guiyang 550025, Peoples R China
2.Guizhou Univ, Coll Life Sci, Guiyang 550025, Peoples R China
3.Guizhou Acad Agr Sci, Guiyang 550006, Peoples R China
4.Guizhou Meitan Linsheng Tea Co Ltd, Zunyi 564100, Guizhou, Peoples R China
关键词： Lithocarpus polystachyus (wall; ) Rehd; fermentation; anti-oxidation; hypoglycemic effect; tumor suppressor
期刊名称：APPLIED SCIENCES-BASEL （ 影响因子：2.838； 五年影响因子：2.921 ）
ISSN：
年卷期： 2022 年 12 卷 14 期
页码：
收录情况： SCI
摘要： This study examined the development conditions and functional properties of a novel compound tea Lithocarpus polystachyus (wall.) Rehd (L. polystachyus, LPR) black tea (LPRBT). The compound tea was developed by fermentation using fresh leaves (Camellia sinensis cv. Qianmei 601) as the main raw material with LPR powder as an additive. Based on the single factor and orthogonal tests with sensory scores as indicators, a withered leaves-LPR powder mass ratio of 9:1 with a 6 h fermentation time was determined to be the production condition of LPRBT with a sensory score of 89.09. In addition, phlorizin content, anti-oxidation function, hypoglycemic function, and tumor suppressor effect of LPRBT were measured. The results demonstrated that LPRBT phlorizin content was significantly higher than apple. It also showed that the equivalent 2,2 '-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) radical clearance rate with Vitamin C (Vc) and the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical clearance rate was 81% of Vc. Both hydroxyl and superoxide anion radical clearance increased with the increase in LPRBT amount. LPRBT also showed a good inhibitory effect on alpha-glucosidase and alpha-amylase, indicating certain hypoglycemic activity. Moreover, it inhibited the growth of HeLa and A549 cancer cells showing tumor suppressor activity. This study provides a reference for the development and application of LPR food products.
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