摘要
目的对绿茶及其饮料中茶多酚的含量及抗氧化性能进行测定。方法采用三波长-光谱法消除随浓度不同发生的本底漂移及吸收峰不对称给定量分析造成的影响,并用流动注射化学发光法测定了绿茶的抗氧化性能。结果方法的回收率为95.2%～102.0%,变异系数小于1.05%。结论绿茶及其饮料具有较高的茶多酚含量和较强的抗氧化性能。
Objective To determine the catechin and the antioxidation effect in natural tea and their beverages. Methods Three wavelength spectrophotometry can eliminate the absorbance error of interfering components, turbid solution and the scattering effect. Back-ground changedwith concentration changed and asymmetric absorption peak problems can be solved, and the antioxidation effect of natural tea and their beverages was studied by the flow-injection chemiluminescence. Results The recovery is 95.2% - 102.0% and the coefficient of variation is 1.05% , Conclusion The results have shown that natural tea and their beverages are abundant in the catechin compounds and strong antioxidative effect.
出处
《卫生研究》
CAS
CSCD
北大核心
2005年第6期752-754,共3页
Journal of Hygiene Research
基金
辽宁省教育厅科学技术基金资助项目(No.20331079)
关键词
茶多酚绿茶及其饮料
三波长-光谱法
流动注射化学发光
抗氧化性
catechin, natural tea and their beverages, three wavelength spectrophotometry, flow-injection chemiluminescence method, antioxidative effect
