使用代谢学,化学学和微生物组分析,揭示不同储存时间的Pukeng茶的挥发性和微生物动力学
Fengke Lin1, Yuedi Xu1, Siyu Lin1
1School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, People's Republic of China.
Food chemistry: X
|March 4, 2026
概括
普茶 (PKT) 的老化揭示了微生物群落和挥发性化合物的变化. 这项研究将特定的微生物与深茶的风味发展联系起来,有助于质量控制和认证.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 分析化学 分析化学
背景情况:
- 普茶 (PKT),一种传统的中国深茶,有着悠久的消费历史.
- 在PKT衰老过程中的挥发性化合物和微生物动态尚不清楚.
研究的目的:
- 为了研究PKT在3-20年的储存期间的挥发性和微生物变化.
- 确定与PKT衰老相关的关键微生物和挥发性分离因子.
- 探索PKT中微生物群落和挥发性概况之间的关系.
主要方法:
- 高通量测序与代谢学 (HS-SPME-GC-MS) 和化学测量 (PCA,PLS-DA) 结合使用.
- 微生物组分析以表征细菌和真菌群落.
- 相关性分析将微生物属与特定的挥发性化合物联系起来.
主要成果:
- 确定了189种挥发性化合物,其中酒精,化物和酸盐占主导地位.
- 观察到明显的代谢物模式,有46种不同的挥发物被确定为歧视物.
- 细菌群落从Firmicutes转移到Actinobacteriota,而Aspergillus则主导着真菌群落.
- 发现了像Staphylococcus,Saccharopolyspora这样的微生物和芳香活性挥发物之间存在显著的相关性.
结论:
- 这项研究提供了PKT中挥发性和微生物多样性的第一个综合性表征.
- 结果提供了关于PKT质量控制,产品认证和功能性微生物发现的见解.
- 微生物活动对老年PKT的不断变化的风味特征作出了重大贡献.
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