文献类型： 外文期刊
作者： Mingming Zhang;Meiqin Li;Fang Wang;Jianxin Chen;Yifan Li;Gensheng Chen;Yuwan Wang;Zhihui Feng;Junfeng Yin
作者机构：
关键词： Hydrogen carbonate;Tea aroma;Tea brewing water;Water chemistry
期刊名称： Food Chemistry: X
ISSN： 2590-1575
年卷期： 2025 年 29 卷
页码：
收录情况： SCIE（2025版） ; ; EI（2025版）
摘要： Tea aroma is significantly influenced by hydrogen carbonate (HCO3−) in brewing water. This study investigated the impact of HCO3− in water on the aroma of brewed tea infusions using sensory evaluation, headspace solid-phase microextraction, and gas chromatography–mass spectrometry techniques. As the concentration of HCO3− in water increased, the purity of tea aroma diminished, while attributes related to cooked flavors and sweetness intensified; this effect is particularly pronounced at high temperatures and prolonged brewing times. HCO3− changed the concentration of volatiles, resulting in a significant decrease in concentrations of dimethyl sulfide, β-ionone, and other compounds. Furthermore, the presence of HCO3− markedly decreased EGCG content while increasing GCG content in tea infusion; these variations in catechin concentrations were correlated with changes in dimethyl sulfide and β-ionone concentrations. These findings enhance the understanding of flavor chemistry concerning tea and water, provide valuable insights for the scientific selection of tea brewing water.
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