Phytochemical composition of Tibetan tea fermented by Eurotium cristatum and its effects on type 1 diabetes mice and gut microbiota
文献类型： 外文期刊
作者： Deng, Junlin 1 ; Luo, Kebin 1 ; Xia, Chen 1 ; Zhu, Yongqing 1 ; Xiang, Zhuoya 1 ; Zhu, Boyu 1 ; Tang, Xiaobo 4 ; Zhang, Ting 4 ; Shi, Liugang 5 ; Lyu, Xiaohua 2 ; Chen, Jian 1 ;
作者机构： 1.Sichuan Acad Agr Sci, Inst Agroprod Proc Sci & Technol, Inst Food Nutr & Hlth, Chengdu 610066, Peoples R China
2.Sichuan Univ, West China Sch Publ Hlth, Dept Nutr & Food Hyg, Chengdu 610041, Peoples R China
3.Sichuan Univ, West China Hosp 4, Chengdu 610041, Peoples R China
4.Sichuan Acad Agr Sci, Tea Res Inst, Chengdu 610066, Peoples R China
5.Yazhou Hengtai Tea Ind Co LTD, Yaan 625100, Sichuan, Peoples R China
关键词： Theabrownin; Tibetan tea extract; Eurotium cristatum fermentation; Diabetes mellitus; Gut microbiota
期刊名称：HELIYON （ 影响因子：4.0； 五年影响因子：4.1 ）
ISSN：
年卷期： 2024 年 10 卷 5 期
页码：
收录情况： SCI
摘要： "Golden-flower" Tibetan tea (GTT) is an innovative dark tea fermented via fungus Eurotium cristatum. To study GTT effects on alleviating the symptoms of type 1 diabetes mellitus (T1DM), GTT's extract (GTTE) was prepared. GTTE chemical compositions were analyzed via HPLC, pyrolysis-gas chromatography-mass (Py-GC-MS) spectrometry analysis, and chemistry analyses. GTTE effects on T1DM were explored on T1DM mice model induced by streptozotocin (STZ). GTTE was composed mainly of tea pigment theabrownin (TB) (49.18%), with high percentages of polysaccharide (16.93%), protein (10.15%), polyphenols (13.90%), amino acids (5.89%), caffeine (1.83%), and flavonoids (0.67%). Py-GC-MS results exhibited that GTTE constituted of phenols, lipids, sugars, and proteins. GTTE attenuated T1DM conditions of mice, relieved their liver and pancreatic injury, restored damaged islet cells, decreased oxidative stress by increasing superoxide dismutase (SOD) and catalase (CAT) levels, modulated cytokine expression leading to the decreasing pro-inflammatory cytokines TNF-alpha and IL-6, increased anti-inflammatory cytokines IL-4 to improve inflammatory responses, and optimized gut microbiota composition and structure based on high-throughput 16S rDNA sequencing, suggesting multi-channel anti-diabetes mechanisms.
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