古代植物发酵过程中感官特征,化学成分和微生物继承的变化 普茶
Teng Wang1,2,3, Ruo-Yu Li1,2,3, Kun-Yi Liu4
1College of Tea Science & College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan 650201, China.
Food chemistry: X
|December 25, 2023
概括
古代Pu-erh茶 (APPT) 发酵通过增加可溶糖和特定代谢物来增强甜味. 微生物的继承,包括像Staphylococcus和Aspergillus这样的属,推动了这些变化,揭示了APPT独特品质背后的机制.
科学领域:
- 食品科学 食品科学 食品科学
- 微生物学 微生物学
- 农业科学 农业科学
背景情况:
- 古代茶树 (APPT) 被定义为100多岁或树干直径超过25厘米的茶树.
- APPT的叶子被加工成高品质,有价值的古代植物pu-erh茶 (APPT).
研究的目的:
- 为APPT开发一个发酵过程.
- 为了研究在APPT发酵过程中感觉特征,化学组成和微生物继承的变化.
- 阐明APPT独特品质的形成机制.
主要方法:
- 开发了APPT的发酵方法.
- 进行了代谢分析,以确定代谢物水平的变化 (使用预测变量重要性[VIP]和折叠变化[FC]标准).
- 微生物群落分析确定了主导属及其与特征成分的相关性.
主要成果:
- 发酵导致了APPT输液的出色甜味.
- 可溶性糖,茶色素和41种代谢物的含量增加 (VIP>1.0,p<0.05,FC>2).
- 72种代谢物的相对水平下降了 (VIP>1.0,p<0.05,FC<0.5).
- 确定了主要的微生物系,包括葡萄球菌,阿克罗巴克特和阿斯伯吉洛斯,并与特征成分相关联 (p < 0.05).
结论:
- APPT发酵显著改变了化学成分和感官特征,特别是增强了甜味.
- 微生物的继承,包括特定的细菌和真菌属,在发酵过程中起着至关重要的作用.
- 这项研究促进了对发酵APPT的独特品质背后的形成机制的理解.
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