作　　者： ; ; ; (何洛强）;

机构地区： 华南农业大学

出　　处： 《农产品加工（下）》 2009年第3期181-183,192,共4页

摘　　要： 研究了以没食子酸为标品测定番石榴叶多酚含量的适宜条件。结果表明,当福林试剂稀释10倍,使用质量分数为40%的Na2CO3,反应时间为7min,反应温度为50℃时,多酚含量在0～500mg内与吸光值呈良好的线性关系。测定方法的RSD为1.17%,平均回收率为98.4%,有较好的精密度和准确度。 Using gallic acid as the standard, the optimized conditions were determined for the content of guava leaf phenol. The results showed that when the dilution times were 10-fold, the content of Na2CO3 was 40%, reaction temperature was 50 ℃, and reaction time was 7 rain, a good linearity between content of phenol and absorbance was obtained in the range of 0-500 mg. The RSD of determination was 1.17%, average recovery rate of spiked phenol was 98.4%, which had good precision and accuracy.

关 键 词： 番石榴叶 多酚 福林法

领　　域： [化学工程]