摘要
目的建立半夏及其不同炮制品中总游离有机酸的含量测定方法 ,比较半夏及其炮制品中总游离有机酸的含量。方法采用电位返滴定法,以琥珀酸为对照品,测定生品及炮制品中总游离有机酸的含量。结果分别测定了3批生品及清半夏、姜半夏中游离有机酸含量,姜半夏和清半夏中游离有机酸含量相对于生品有不同程度的提高。加样回收率为95.20%,RSD=1.81%。结论本法简便、准确、可靠,可作为半夏及其炮制品清半夏和姜半夏中游离有机酸测定方法 。
Objective To determine and compare the contents of free total organic acids in Pinellia ternata and its processed products. Methods Back potentiometric titration was employed to determine the contents of free total organic acids in Pinellia ternata and its processed products. Results The contents of free total organic acids in three batches of Pinellia ternata and its processed products were determined. The contents of free total organic acids in prepared rhizoma pinelliae was higher than that of the crude drug. The recovery was 95.20% and RSD was 1.81%. Conclusion This method were simple, accurate and can be used to estimate the quality of Pinellia ternata and its processed products （prepared with potash alum and juice of rhizima zingiber or with just potash alum）.
出处
《中国中医药信息杂志》
CAS
CSCD
2010年第6期50-51,共2页
Chinese Journal of Information on Traditional Chinese Medicine
基金
国家自然科学基金(30772785)
国家"十一五"科技支撑计划(2006BAI09B06-10)
<中华人民共和国药典>2010年版(一部)饮片标准研究课题(YZ-129
130
131)
关键词
半夏
有机酸
电位返滴定法
含量测定
Pinellia ternata
organic acid
back potentiometric titration
content determination
