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epicatechin gallate

compound / compound-ecg

エピカテキンガレート（ECg）

Galloylated catechin from tea, abbreviated as ECG.

On this page (6 sections)
  1. Overview
  2. Sources for this overview (1)
  3. Topic hubs
  4. Follow the connections
  5. Related entries (10)
  6. Sensory (2)
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Reading the bitterness

ECG (epicatechin gallate) is one of the galloylated catechins found in green tea. In a 2018 study that modeled green tea infusion in relation to concentration and taste, ECG concentration was treated as one of 2 catechin indices showing high correlation with bitterness.

In the same study, ECG concentration also correlated with astringency, positioning it as a component involved in both bitterness and astringency. As an example of a single compound linking to 2 different sensory dimensions depending on concentration, it serves as a clue for understanding green tea flavor development.

However, these correlations are specific to the sample used in that study and the concentration-taste response model, and cannot be treated as universal conversion equations. If interactions with other components in the mixture or preparation conditions change, the strength of the correlation may also change.

Sources for this overview

  1. Quantitative analyses of the bitterness and astringency of catechins from green tea

    Xu YQ; Zhang YN; Chen JX; Wang F; Du QZ; Yin JF / 2018 / journal article / abstract checked

    Checked for this overview: Confirmed that ECG concentration is an index showing high correlation with bitterness. / Confirmed that in the same infusion, ECG concentration also correlates with astringency. / Confirmed the limitation that correlations are specific to the samples in that research.

Follow the connections

epicatechin gallate →is correlated with→ bitterness →can be measured separately …→ astringency

epicatechin gallate →is correlated with→ astringency →is not synonymous with→ bitterness

Structured claims — open a section to read each claim's confidence, evidence and limits

Sensory (2)

epicatechin gallate is correlated with bitternesssupported

Scope: Green tea infusion in the cited quantitative study.

Note: Correlation is specific to concentration and matrix.

ECG concentration was one of 2 catechin indices showing high correlation with bitterness in the modeled infusion.
Limitations: Correlation specific to that research.
Source: Quantitative analyses of the bitterness and astringency of catechins from green tea (Xu YQ; Zhang YN; Chen JX; Wang F; Du QZ; Yin JF, 2018) · abstract checked
Show datacompound-ecg —is_correlated_with→ sensation-bitter
claim: clm-ecg-bitter / type: sensory / updated: 2026-08-30
epicatechin gallate is correlated with astringencysupported

Scope: Green tea infusion in the cited quantitative study.

Note: Subject to interactions within the mixture and preparation conditions.

In the modeled green tea infusion, ECG concentration correlated with astringency.
Limitations: Correlation specific to this research.
Source: Quantitative analyses of the bitterness and astringency of catechins from green tea (Xu YQ; Zhang YN; Chen JX; Wang F; Du QZ; Yin JF, 2018) · abstract checked
Show datacompound-ecg —is_correlated_with→ sensation-astringent
claim: clm-ecg-astringent / type: sensory / updated: 2026-08-30

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