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首页> 外文期刊>Journal of Applied Polymer Science >Hierarchically controlled assemblies from amylose analog aminopolysaccharides by reductive amination: From nano- to macrostructures
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Hierarchically controlled assemblies from amylose analog aminopolysaccharides by reductive amination: From nano- to macrostructures

机译：通过减少胺化由淀粉糖类似物多糖的分层控制的组件：从纳米至大半胞膜

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摘要

In this study, we found that hierarchically controlled assemblies from amylose analog aminopolysaccharides occurred by reductive amination to obtain nanoparticles, microaggregates, and macrohydrogels depending on reaction conditions. The polysaccharide substrate composed of alpha(1 -> 4)-linked glucosamine residues was synthesized by thermostable phosphorylase (from Aquifex aeolicus VF5)-catalyzed enzymatic polymerization of alpha-D-glucosamine 1-phosphate according to the reaction manner reported in our previous study. The reductive amination of the produced polysaccharide was carried out in the presence of NaBH3CN as reductant in 0.1 mol/L acetic acid aq. at 60 degrees C for 1 h. When lower feed ratios of reductant to the reducing end of the substrate were employed for the reaction, nanoparticles were obtained. With increasing feed ratios of reductant, more alpha(1 -> 4)-GlcNn molecules assembled to further form water-insoluble microaggregates and macrohydrogels. (C) 2017 Wiley Periodicals, Inc.
机译：在这项研究中，我们发现，通过还原胺化而发生来自淀粉糖类似氨基多糖的分层控制的组件，得到纳米颗粒，微烧结和宏观凝胶，取决于反应条件。通过热稳定的磷酸化酶（来自Aquifex Aeolicus Vf5）合成的多糖基材由耐热磷酸化酶（来自Aquifex Aeolicus VF5）合成 - 根据我们之前的研究报告的反应方式催化α-D-葡糖胺1-磷酸盐的催化酶促聚合。在NaBH 3C的存在下，在0.1mol / L乙酸水中的还原剂存在下进行所产生的多糖的还原胺化。在60℃下1小时。当采用将较低的饲料较低的还原剂与基材的还原端的饲料比进行反应时，得到纳米颗粒。随着还原剂的饲料比增加，更多的α（1-> 4）-GLCNN分子组装以进一步形成水不溶性微磁凝生和甲状腺凝胶。 （c）2017 Wiley期刊，Inc。

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