摘要
建立电位滴定法测定马蹄中多酚类化合物含量的定量分析方法。以高锰酸钾为氧化剂,在强酸性介质中,以没食子酸为参照,用二阶微分法确定待测样品试液的滴定终点电位,对马蹄提取物中的多酚类化合物进行自动滴定,并与可见分光光度法进行对比。方法的RSD为1.29%(n=5),平均回收率为99.34%。结果表明,本方法体系可以完成对多酚类物质的快速测定。
The automatically potentiometric titration was used to determine polyphenols in Chinese Water chestnut. The sample was tested used potassium permanganate as an oxidant in strong acid medium , gallic acid as reference, and the result was compared with the visible spectrophotometry. The RSD of method was 1.29%（n=5）, and the average recovery was 99.34%. The results showed that the methodology can be completed on the rapid determination of polyphenols.
出处
《食品研究与开发》
CAS
北大核心
2016年第9期167-169,共3页
Food Research and Development
关键词
自动电位滴定
马蹄
提取
多酚
automatic potentiometric titration
Chinese Water Chestnut
extraction
polyphenols
