Composition Profile
Verified · 2026-09-26- 01Leafhopper- and processing-induced aromaIn leafhopper-damaged Qingxin Damao processed into Oriental Beauty, major volatiles including linalool oxides, benzyl alcohol, 2-phenylethanol and 2,6-dimethyl-3,7-octadiene-2,6-diol increased during manufacture.Other sample
These volatiles are closely associated with mature-fruit, honeyed and floral aromatic characteristics.
- 02Metabolomic profile through processingDuring enzymatic stages, catechins were oxidized or degraded into theaflavins and oolongtheanins. Total aroma abundance rose from 259.24 to 564.52 μg/L and then fell to 274.74 μg/L during non-enzymatic stages, while linalool could thermally convert to hotrienol.Other sample
- 03Volatilomic authentication profileVolatilomics of 38 related samples identified 37 significant metabolites useful for origin discrimination. Phenethyl alcohol, methyl salicylate, benzyl alcohol, benzaldehyde and linalool-related compounds showed stable relevance in grade-related sensory evaluation.Dry-leaf sample
A classic 2007 study showed increases during processing in linalool oxides, benzyl alcohol, 2-phenylethanol and related volatiles from leafhopper-bitten Qingxin Damao material. A 2022 metabolomics study further showed stage-dependent catechin oxidation, theaflavin/oolongtheanin formation and changes in aroma abundance.

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