在乌龙茶的储存过程中氨基酸,甲基因和的变化及其与抗菌作用的关系
Jilai Cui1,2, Bin Wu3, Jie Zhou4
1College of Life Science, Xinyang Normal University, 237 Nanhu R., Xinyang, 464000, Henan, People's Republic of China. jilaicui@xynu.edu.cn.
Scientific reports
|May 6, 2024
概括
在储存期间,乌龙茶的质量发生变化,主要化合物如茶氨酸和EGCG表明了变化. 这项研究确定了代谢物,以有效监测茶的质量及其随着时间的推移而增加的抗菌性质.
科学领域:
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
- 微生物学 微生物学
背景情况:
- 茶的质量受到储存条件的重大影响.
- 关于储存如何影响乌龙茶的化学成分和质量,研究有限.
- 了解这些变化对于保持乌龙茶的市场价值和消费者满意度至关重要.
研究的目的:
- 调查不同储存时间对乌龙茶的化学特征的影响.
- 为了识别在乌龙茶储存期间发生变化的关键化学成分.
- 为了将化学变化与茶的抗菌活性变化相关联.
主要方法:
- 乌龙茶样本存储时间不同.
- 关键的化学成分包括儿茶素,自由氨基酸和类化合物被量化.
- 使用主要组件分析 (PCA) 和热图分析来分析组合变化.
- 进行了相关性分析,以将代谢物水平与抗菌活性联系起来.
主要成果:
- 储存显著改变了theanine,epigallocatechin gallate (EGCG) 和谷氨酸的水平.
- PCA和热图可视化了主要化学成分在储存时间上的明显变化.
- 对*Micrococcus tetragenus*和*Escherichia coli*的抗菌活性随着储存时间的增加而增加.
- 特定的代谢物,包括酸,氨酸,氨酸和EGCG,与增强的抗菌特性相关.
结论:
- 氨酸,EGCG和谷氨酸可以作为可靠的生物标志物来监测储存期间乌龙茶的质量.
- 代谢物概况提供了关于储存的乌龙茶不断发展的抗菌能力的见解.
- 这项研究提供了一种基于数据的方法,用于有效监测乌龙茶的质量,使用关键代谢物.
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