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Related Experiment Video

Updated: Mar 18, 2026

Author Spotlight: Exploring Tea Aroma Using Solvent-Assisted Flavor Evaporation Technique
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Green tea flavour determinants and their changes over manufacturing processes.

Zhuo-Xiao Han1, Mohammad M Rana2, Guo-Feng Liu1

  • 1State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, 130 Changjiang Ave W., Hefei, Anhui 230036, China.

Food Chemistry
|July 5, 2016
PubMed
Summary

This study identified key flavor compounds in two tea (Camellia sinensis) cultivars, revealing genetic and manufacturing impacts on tea aroma and taste. Optimizing tea flavor involves selecting specific genotypes and refining processing methods.

Keywords:
CaffeineCamellia sinensisCatechinsGene expressionManufacturing processTea flavourVolatile profiles

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Area of Science:

  • Agricultural Chemistry
  • Plant Biochemistry
  • Food Science

Background:

  • Tea (Camellia sinensis) flavor is influenced by cultivar-specific compounds and manufacturing.
  • Understanding these determinants is crucial for improving tea quality and sensory profiles.

Purpose of the Study:

  • To identify and quantify key flavor determinants in two distinct Camellia sinensis cultivars ('Bai-Sang Cha' and 'Fuding-Dabai Cha').
  • To investigate the impact of manufacturing processes on these flavor compounds.
  • To correlate genetic expression with the production of specific aroma and taste molecules.

Main Methods:

  • Metabolite profiling using odour activity threshold analysis.
  • Gas chromatography-mass spectrometry (GC-MS) for volatile compound identification.
  • Quantitative real-time PCR (qRT-PCR) for gene expression analysis.

Main Results:

  • 'Bai-Sang Cha' (BAS) exhibited higher levels of floral odorants (e.g., β-ionone, linalool, geraniol) and catechins compared to 'Fuding-Dabai Cha' (FUD).
  • Manufacturing processes altered volatile profiles, increasing some compounds (e.g., β-ionone, linalool oxides) while decreasing others (e.g., linalool, geraniol).
  • Steam treatment reduced catechins and monoterpenols, impacting astringency and floral scent, unlike pan-firing.

Conclusions:

  • Genotype significantly influences the inherent levels of flavor determinants in tea.
  • Manufacturing processes critically modify the profile of aroma and taste compounds.
  • Targeted modulation of flavor determinants via genotype selection and processing optimization is feasible for enhancing tea quality.