AI Article Synopsis
- Ancient tea plants are over 100 years old or have a trunk diameter greater than 25 cm, and their leaves are used to produce high-quality pu-erh tea known as ancient plants pu-erh tea (APPT).
- During the fermentation process of APPT, notable increases in soluble sugars, theabrownins, and 41 specific metabolites were observed, while 72 metabolites showed a decrease, indicating significant chemical changes.
- The study also explored how these chemical changes relate to the sensory characteristics and microbial composition during fermentation, contributing to the unique quality of APPT.
Article Abstract
"Ancient tea plants" are defined as tea trees > 100 years old, or with a trunk diameter > 25 cm; their leaves are manufactured to high - quality, valuable ancient plants pu-erh tea (APPT). In this study, a fermentation of APPT were developed, and outstanding sweetness of APPT infusion was observed. During fermentation, the content of soluble sugars, theabrownins ( < 0.05), as well as 41 metabolites were increased [Variable importance in projection (VIP) > 1.0; < 0.05 and Fold-change (FC) FC > 2]; While relative levels of 72 metabolites were decreased (VIP > 1.0, < 0.05 and FC < 0.5. , , , , , , and were identified as dominant genera, and their relative levels were correlated with contents of characteristic components ( < 0.05). Together, changes in sensory characteristics, chemical composition and microbial succession during APPT fermentation were investigated, and advanced the formation mechanism of its unique quality.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10739768 | PMC |
| http://dx.doi.org/10.1016/j.fochx.2023.101003 | DOI Listing |
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