摘要
以没食子酸为对照品,采用Folin-Ciocalteu比色法测定了茶多酚锌配合物(TP-Zn)中多酚的含量.结果表明,多酚质量浓度在0～8.54mg.L-1范围内与吸光度呈良好的线性关系;稳定性、精密度、重现性和回收率实验的相对标准偏差在0.39%～1.23%范围内.该法是一种简便、快速、准确测定茶叶制品中多酚含量的可靠方法.
A quantitative determination method for total polyphenols content in the Zinc complex of polyphenol was developed by using Folin-Ciocalteu colorimetry with gallic acid as reference compound.The results showed that the linear range of calibration curve was 0-8.54 mg·L-1.The RSD（relative standard deviation） of stability,precision,repeatability and recovery rate were in the range of 0.39%-1.23%.Therefore,FC method is a convenient,fast and accurate method to determine the total polyphenols of tea products.
出处
《化学研究》
CAS
2011年第6期76-78,共3页
Chemical Research
基金
河南省国际合作项目(No.084300510023)
