福林-酚比色法测定葡萄烈酒中总多酚含量的研究
发布时间:2018-08-19 18:40
【摘要】:该试验对福林-酚比色法测定葡萄烈酒中总多酚含量的最佳条件进行了研究。结果表明,最佳检测条件确定为反应温度40℃、显色时间20 min、检测波长736 nm。在此最佳条件下,没食子酸质量浓度在50~400μg/m L范围内与吸光度值线性关系良好(相关系数R2=0.997 4),方法重复性试验和精密度试验结果相对标准偏差(RSD)分别为1.97%和1.17%,回收率为98.61%~103.22%,RSD值为2.34%,表明该方法重复性好、精密度和准确度较高,可用于葡萄烈酒中总多酚含量的检测。
[Abstract]:The optimum conditions for the determination of total polyphenols in grape spirits by florin-phenol colorimetry were studied. The results showed that the optimum detection conditions were as follows: reaction temperature 40 鈩,
本文编号:2192490
[Abstract]:The optimum conditions for the determination of total polyphenols in grape spirits by florin-phenol colorimetry were studied. The results showed that the optimum detection conditions were as follows: reaction temperature 40 鈩,
本文编号:2192490
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