HR-MAS: The Other NMR Approach to Polysaccharide Solids

机译：HR-MAS：多糖固体的另一种NMR方法

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Polysaccharides often exist in forms such as gels, gums, blends, solids, or highly viscous liquids that are intractable to conventional solution high-resolution NMR methods. Crossed Polarization Magic-Angle Spinning (CP-MAS) NMR has proven useful in many cases, particularly when the system is comparatively rigid or even crystalline. High Resolution Magic-Angle Spinning (HR-MAS) NMR offers an alternative which may be useful, particularly with respect to the most intransigent systems such as gels, blends, and even fresh never-dried plant or animal tissue. For example, it can provide a facile method for identifying chemical differences between native and mutant organisms or between normal and diseased tissues. Unlike CP-MAS, this method utilizes ~1H detection and therefore permits most of the classical one and two dimensional homonuclear and heteronuclear experiments. This chapter provides an introduction to this method and some specific examples of applications to polysaccharides.

机译：多糖通常以凝胶，树胶，共混物，固体或高粘度液体等形式存在，这些形式对于常规溶液高分辨率NMR方法而言是难以解决的。交叉极化魔角旋转（CP-MAS）NMR已在许多情况下证明是有用的，特别是当系统相对较硬甚至结晶时。高分辨率魔角旋转（HR-MAS）NMR提供了一种可能有用的替代方法，特别是对于最不透明的系统，例如凝胶，混合物，甚至是新鲜的从未干燥的动植物组织。例如，它可以提供一种简便的方法来鉴定天然和突变生物之间或正常组织和患病组织之间的化学差异。与CP-MAS不同，此方法利用〜1H检测，因此可进行大多数经典的一维和二维同核和异核实验。本章介绍了该方法，并提供了一些具体的多糖应用实例。

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来源
《Polysaccharide materials: Performance by design》|2007年|P.261-270|共10页
会议地点 Chicago IL(US)
作者
William T. Winter; rnDeAnn Barnhart;
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Cellulose Research Institute and Department of Chemistry, SUNY-Environmental Science and Forestry, Syracuse, NY 13210;

rnCellulose Research Institute and Department of Chemistry, SUNY-Environmental Science and Forestry, Syracuse, NY 13210;

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HR-MAS: The Other NMR Approach to Polysaccharide Solids

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