透明质酸-己二酸二酰肼中间体的活性氨基的测定
Determination of reactive amino in hyaluronic acid-adipicdihydrazide intermediate
作者:许载阳;郑文益;尹宗宁;
Author:
收稿日期: 年卷(期)页码:2012,27(06):-687-688
期刊名称:华西药学杂志
Journal Name:WEST CHINA JOURNAL OF PHARMACEUTICAL SCIENCES
关键字:透明质酸;己二酸二酰肼;2,4,6-三硝基苯磺酸;活性氨基
Key words:
基金项目:
中文摘要
目的用己二酸二酰肼活化透明质酸,并用2,4,6-三硝基苯磺酸显色法测定活化后产物中活性氨基的含量。方法利用2,4,6-三硝基苯磺酸与活性氨基形成稳定的特征显色化合物的特性,采用L-缬氨酸作为活性氨基标准物质绘制了标准曲线,并测定了不同反应条件下制备的透明质酸-己二酸二酰肼中间体中活性氨基的量。结果绘制的标准曲线的线性及精密度较好,回归方程为:Y=4.8405X+0.0258(r2=0.9972);测得3种反应条件下制备的透明质酸-己二酸二酰肼中间体的活性氨基取代度分别为100.7、111.9、142.2μmol.g-1。结论所用方法合理准确,对活化反应的优化和进一步的接合反应提供了一定的定量依据。
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