Nontargeted and targeted metabolomics analysis for evaluating the effect of "golden flora" amount on the sensory quality, metabolites, and the alpha-amylase and lipase inhibitory activities of Fu brick tea

Yingying Li; He Zhou; Tian Tian; Yihong Hou; Dan Chen; Jie Zhou; Shuyuan Liu; Youben Yu; Weidong Dai; Tianshan Zhou

doi:10.1016/j.foodchem.2023.135795

Nontargeted and targeted metabolomics analysis for evaluating the effect of "golden flora" amount on the sensory quality, metabolites, and the alpha-amylase and lipase inhibitory activities of Fu brick tea

Food Chem. 2023 Aug 1:416:135795. doi: 10.1016/j.foodchem.2023.135795. Epub 2023 Mar 3.

Authors

Yingying Li¹, He Zhou², Tian Tian³, Yihong Hou⁴, Dan Chen⁵, Jie Zhou⁶, Shuyuan Liu⁷, Youben Yu⁸, Weidong Dai⁹, Tianshan Zhou¹⁰

Affiliations

¹ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: liyingyingyu@nwafu.edu.cn.
² College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: zhouhe@nwafu.edu.cn.
³ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: tiaaaaaaan@nwafu.edu.cn.
⁴ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: houyihong@nwafu.edu.cn.
⁵ Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, China. Electronic address: chendan@tricaas.com.
⁶ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: jiezhou@nwafu.edu.cn.
⁷ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: shuyuan_liu@nwafu.edu.cn.
⁸ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: chyyjs@nwsuaf.edu.cn.
⁹ Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang 310008, China. Electronic address: daiweidong@tricaas.com.
¹⁰ College of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China. Electronic address: zhoutianshan@nwsuaf.edu.cn.

PMID: 36871505
DOI: 10.1016/j.foodchem.2023.135795

Abstract

To investigate the effects of "golden flora" amount on the sensory quality, metabolites and bioactivities of Fu brick tea (FBT), FBT samples with different "golden flora" amounts were prepared from the same materials by adjusting the water content before pressing. With the increase of "golden flora" in samples, the tea liquor color changed from yellow to orange red and the astringent taste gradually diminished. Targeted analysis demonstrated that (-)-epigallocatechin gallate, (-)-epicatechin gallate, and most amino acids gradually decreased as the increase of "golden flora". Seventy differential metabolites were identified by untargeted analysis. Among them, sixteen compounds including two Fuzhuanins and four EPSFs were positively correlated with "golden flora" amount (P < 0.05). The FBT samples with "golden flora" exhibited significantly higher inhibitory potency on α-amylase and lipase than the samples without "golden flora". Our results provide a theoretical basis of guiding FBT processing based on desired sensory quality and metabolites.

Keywords: Fu brick tea; Golden flora; Lipase; Metabolomics; α-Amylase.

MeSH terms

Lipase
Metabolomics / methods
Tea* / chemistry
alpha-Amylases* / metabolism

Substances

Tea
alpha-Amylases
Lipase