食材 / ingredient-green-tea
green tea infusion
Infusion prepared from Camellia sinensis leaves
主張（4）
green tea infusion has_sensory_attribute bitterness確立
範囲: Brewed green tea
注記: Intensity depends on leaf material and preparation.
Identifies bitterness as a major quality attribute of green tea and reviews its compounds and perception.
限界: Broad review; preparation conditions vary.
出典: Bitter and astringent substances in green tea: composition, human perception mechanisms, evaluation methods and factors influencing their formation（Deng S; Zhang G; Olayemi Aluko O; Mo Z; Mao J; Zhang H; Liu X; Ma M; Wang Q; Liu H, 2022） ・抄録確認
green tea infusion has_sensory_attribute astringency確立
範囲: Brewed green tea
注記: Stored separately from bitterness even when both are driven by overlapping compounds.
Identifies astringency separately from bitterness as a major quality attribute of green tea.
限界: Broad review; preparation conditions vary.
出典: Bitter and astringent substances in green tea: composition, human perception mechanisms, evaluation methods and factors influencing their formation（Deng S; Zhang G; Olayemi Aluko O; Mo Z; Mao J; Zhang H; Liu X; Ma M; Wang Q; Liu H, 2022） ・抄録確認
green tea infusion has_bitterness_correlated_with Concentrations of EGCG and ECG支持あり
範囲: Green-tea infusions and concentration-taste models in the cited study
注記: Correlation and fitted curves are study-specific rather than universal conversion equations.
Bitterness was highly correlated with EGCG and ECG concentrations in the studied infusions (reported R-squared 0.7769).
限界: Correlation is specific to the experimental material and model.
出典: 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） ・抄録確認
green tea infusion has_astringency_correlated_with Concentrations of ECG and selected flavonol glycosides支持あり
範囲: Green-tea infusions in the cited study
注記: Mixture interactions and preparation conditions matter.
Astringency was highly correlated with ECG and selected flavonol glycosides (reported R-squared 0.7878).
限界: Correlation is specific to the experimental material and model.
出典: 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） ・抄録確認