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红茶消费对肠道微生物群的影响 - 一项随机单盲并行组,安慰剂控制的随机研究

Reno Tomioka¹, Yuko Tanaka¹, Masayuki Suzuki¹

¹R&D Unit, Mitsui Norin Co., Ltd.

Journal of nutritional science and vitaminology

|November 8, 2023

概括

红茶的消费改善了肠道微生物群,增加了有益的Prevotella和产生丁酸盐的细菌. 这表明黑茶的机制.

科学领域:

* 免疫学和微生物学
* 营养科学营养科学

背景情况:

*以前的研究表明,饮用黑茶可以减少上呼吸道炎症,改善唾液分泌免疫球蛋白A (SIgA) 水平.
*肠道微生物群在粘膜免疫中起着至关重要的作用,这表明黑茶,肠道健康和免疫功能之间存在潜在联系.

研究的目的:

* 调查习惯饮用黑茶对肠道微生物群组成和短链脂肪酸 (SCFA) 度的影响.
* 探索肠道微生物群变化与粘膜免疫标记物之间的关系.

主要方法:

* 一项随机的,单盲,安慰剂控制的研究,涉及72名健康的日本成年人超过12周.
*参与者每天饮用三杯黑茶或安慰剂.
* 便样本分析了细菌菌群和SCFA度.

主要成果:

* 在所有受试者中,饮用黑茶显著增加了Prevotella的丰度,并减少了便中的乙酸.
* 在唾液SIgA低的个体中,黑茶增加了总细菌,Prevotella和产生丁酸盐的细菌.
* 黑茶提升了唾液SIgA和Flavonifractor plautii在初始水平较低的人群中,这种产生酸盐的细菌.

结论:

* 红茶的摄入会积极调节肠道微生物群的组成,特别是在具有较低基线粘膜免疫力的个体中.
*增加酸盐产生细菌的丰富性,如Prevotella和Flavonifractor plautii,可能会调解黑茶的免疫增强作用.
*这些肠道微生物群的变化为之前观察到的与红茶消费相关的上呼吸道炎症减少提供了潜在的解释.

关键词:

黑茶聚合聚烯聚合物黑茶聚合聚烯聚合物黑茶是什么黑茶是什么黑茶是什么产生酸盐的细菌产生酸盐.肠道的微生物群.粘膜免疫力粘膜免疫力短链脂肪酸短链脂肪酸

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