贵州医科大学学报

2009, v.34;No.138(03) 276-278

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蝇蛆壳聚糖黏均分子量的测定
Determination of the Viscosity-average Molecular Weight of Fly Maggot Chitosan

覃容贵;吴建伟;国果;付萍;
QIN Ronggui1,WU Jianwei2,GUO Guo2,FU Ping2 (1.School of Pharmacology,Guiyang Medical College,Guiyang 550004,Guizhou,China; 2.Department of Parasitology,Guiyang Medical College,Guiyang 55004,Guizhou,China)

摘要(Abstract):

目的:测定蝇蛆壳聚糖特性黏度,并计算其黏均分子量。方法:利用乌式黏度计,测定高聚物蝇蛆壳聚糖的黏度,采用外推法和一点法计算,进而得出其分子量。结果:外推法和一点法均可用于壳聚糖黏度及分子量的测定。结论:一点法只需测得1个浓度下的壳聚糖溶液的相对黏度和增比黏度,即可简便、快速、准确地测出壳聚糖的特性黏度,进而求得其黏均分子量,相对一步法更简便,但外推法的可靠性及准确性更高。
Objective: To determine the viscosity-average molecular weight of fly maggot chitosan.Method: Ubbelohde viscometer was used to measure the viscosity of fly maggot chitosan solution,and extrapolation and one-point methods were adopted to calculate the relative molecular weight of the chitosan.Result: The viscosity and molecular weight of chitosan were obtained with both extrapolation method and one point method.Conclusion: One point method is convenient,fast and accurate for the determination of viscosity and molecular weight of chitosan,while extrapolation method is even more accurate.

关键词(KeyWords): 壳聚糖;分子量;蝇科;幼虫
chitosan;molecular weight;Muscidae;larva

Abstract:

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基金项目(Foundation): 贵州省重点技术创新项目资金[黔经贸技创(2005)20号]。

作者(Author): 覃容贵;吴建伟;国果;付萍;
QIN Ronggui1,WU Jianwei2,GUO Guo2,FU Ping2 (1.School of Pharmacology,Guiyang Medical College,Guiyang 550004,Guizhou,China; 2.Department of Parasitology,Guiyang Medical College,Guiyang 55004,Guizhou,China)

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DOI: 10.19367/j.cnki.1000-2707.2009.03.011

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