| 胶体滴定法测定壳聚糖脱乙酰度 |
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| 引用本文： | 杨文智,祝小静,李海鹰,陈帅娜,蒋元勋. 胶体滴定法测定壳聚糖脱乙酰度[J]. 河北大学学报(自然科学版), 2010, 30(3) |
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| 作者姓名： | 杨文智 祝小静 李海鹰 陈帅娜 蒋元勋 |
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| 作者单位： | 河北大学,药学院,河北,保定,071002 |
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| 基金项目： | 河北省科技厅科学技术研究与发展指导计划 |
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| 摘 要： | 采用胶体滴定法测定壳聚糖的脱乙酰度,考察了壳聚糖溶液pH值、溶液浓度、指示剂用量、不同溶剂和离子强度等因素对胶体滴定的影响,并与电位滴定和1H NMR法相比较,希望寻找一种简便、快速和准确测定壳聚糖脱乙酰度的方法.结果表明:胶体滴定法可作为测定壳聚糖脱乙酰度的优选方法.
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| 关 键 词： | 壳聚糖脱乙酰度 胶体滴定法 氢核磁法 电位滴定法 |
Determination of the Degree of Deacetylation of Chitosan by Colloid Titration |
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| YANG Wen-zhi,ZHU Xiao-jing,LI Hai-ying,CHEN Shuai-na,JIANG Yuan-xun. Determination of the Degree of Deacetylation of Chitosan by Colloid Titration[J]. Journal of Hebei University (Natural Science Edition), 2010, 30(3) |
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| Authors: | YANG Wen-zhi ZHU Xiao-jing LI Hai-ying CHEN Shuai-na JIANG Yuan-xun |
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| Abstract: | Colloid titration was used to determine the substitution degree of deacetylation(DD) of chitosan.The effect of solution pH value,concentration and sodium chloride concentration on colloid titration were discussed.The advantages and disadvantages of colloid titration were compared with electrolytic titration and 1H NMR.The purpose of this paper was to find a simple,rapid and precise technique for DD measurement.The results showed that colloid titration was an optimum method to determine the DD value of chitosan. |
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| Keywords: | colloid titration degree of deacetylation of chitosan 1H NMR spectroscopy electric titration |
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