【摘要】 测定了固液比1:50～1:400（g∶mL）的系列单枞茶浸取液和相同浓度的单枞茶、绿茶、红茶浸取液对NaNO₂的清除效果。结果表明:单枞茶浸取液对NaNO₂清除比随浓度的减小而减小，且浓度越小，清除NaNO₂达到平衡所需的时间越长。相同浓度不同类型的茶叶浸取液对NaNO₂清除能力不同，单枞茶浸取液对NaNO₂的清除比为435.2μg·g^-1，绿茶为421.4μg·g^-1，红茶为351.1μg·g^-1(浸取液的浓度均为0.0114 g·mL^-1)，但达到最大清除比所需的时间均约为60 min，本研究旨在为饮茶方式提供有益的参考。更多还原

【Abstract】 The removal effect of NaNO₂ by a series of Dancong tea extract solutions with a mass to volume ratio concentration of 1:50 ～ 1: 400（ g ∶ mL） and the same concentration of Dancong tea,green tea,and black tea extract solutions was determined. The results showed that the NaNO₂ scavenging ratio of the Dancong tea extract decreased with decreasing concentration,and the lower the concentration,the longer the time required to reach equilibrium for NaNO₂ scavenging. Different types of tea extract solutions with the same concentration had different NaNO₂ scavenging abilities. The scavenging ratio of Dancong tea extract solution to NaNO₂ was 435.2 μg·g^-1,green tea was 421.4 μg·g^-1,and black tea was 351.1 μg·g^-1( the concentration of the extract solution was 0.011 4 g·mL^-1),but the time required to reach the maximum scavenging ratio was about 60 minutes,this study aims to provide a useful reference for teu dninking methods.更多还原