摘要
建立木瓜中总有机酸含量的测定方法,并测定和比较皱皮木瓜和光皮木瓜共5个不同样品中的总有机酸含量。结果显示:24h内同一样品的测定结果稳定,RSD为1.28%,平均回收率为99.59%(n=6),RSD为1.548%;5个不同木瓜样品的总有机酸含量(以苹果酸酸计)在2.09%～3.47%之间。其中以皱皮木瓜1号的总有机酸含量最高(3.47%),皱皮木瓜4号最低(2.09%)。
To establish a method for determination the content of total organic acids in fructus chaenomelis,and then to determine the content of total organic acids in 5 different samples of fructus chaenomelis belonging to two species.Using the method of direct potentiometric titration.The content of the same sample was stable within 24 h,RSD was 1.28 %.Moreover,the average recovery was 99.59 %,RSD was 1.548 %（n=6）.The values of total organic acids content in 5 different samples of fructus chaenomelis were in the range of 2.09 %-3.47 %.The highest was No.1 of Chaenomeles speciosa（Sweet）Nakai（3.47 %）,and the lowest was No.4 of Chaenomeles speciosa（Sweet）Nakai（2.09 %）.
出处
《食品研究与开发》
CAS
北大核心
2010年第1期100-102,共3页
Food Research and Development
基金
国家"十一五"支撑计划课题(2006BAD06B02)
关键词
木瓜
总有机酸
电位滴定
fructus chaenomelis
total organic acids
potentiometric titration
