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xuxin8650

新虫 (初入文坛)

[交流] 【原创】淀粉链长分布测定

我做课题是支链淀粉链长分布测定,国外好多文献采用带有脉冲安培检测器的液相色谱测定,但由于实验室条件限制,不能用它。而又不想采用国内报道的凝胶色谱柱法,请问大家,还有好的办法吗 ?
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corrs

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axi8383(金币+1): 2010-03-07 22:46
1.配备多角度激光散射(MALLS)和示差折光检测器(RI)的高效体积排阻色谱法(HPSEC)
2.配备有在线酶反应器和脉冲电流检测器的高效阴离子交换色谱(HPAEC-ENZ-PAD)
参考文献: WONG K S, JANE J L. Quantitative analysis of debranched amylopectin by HPAEC-PAD with a postcolumn enzyme reactor[J]. Journal of Liquid Chromatography & related technologies, 1997, 20(2): 279-310.
YOO S H, JANE J L. Molecular weights and gyration radii of amylopectins determined by high-performance size-exclusion chromatography equipped with multi-angle laser-light scattering and refractive index detectors[J]. Carbohydrate Polymers, 2002, 49(3): 307-314.
最简单的就是GPC了,据我所知没有其他办法了,测链长分布不用仪器分析很困难的
2楼2010-03-07 18:46:19
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