Composition Profile
Verified · 2026-09-26- 01Total catechinsTotal catechins were 163.65 mg/g at day 0 of pile fermentation and declined to 76.38 mg/g by day 56.Other sample
- 02CaffeineCaffeine rose continuously from day 0 through day 35, reached the highest value observed in the process at 29.25 mg/g on day 42, then gradually declined from day 49 to day 56.Other sample
- 03Non-volatile metabolome during pile fermentationAcross fermentation, 238 significantly differential metabolites were screened, with 154 upregulated and 84 downregulated. Catechins, flavonoids and some amino acids declined, while theabrownins increased alongside the change in liquor color from yellow-green toward reddish brown and the shift from fresh, slightly astringent taste toward mellowness.Other sample
Research shows large declines in total catechins and total flavonoids, while caffeine rises and then falls rather than changing in only one direction. Hundreds of differential metabolites participate in the development of reddish-brown liquor, reduced bitterness and a mellower taste.

Tea Conversations
Tea lovers from around the world meet over a cup of tea.
Sign in or register to join the conversation. Your comment account is created automatically the first time you use a connected account.
No comments yet
Share your thoughts with readers around the world.