Epimerization of Some N-Acetylhexosamines Caused by Ion-exchange Resins Chromatography
نویسندگان
چکیده
منابع مشابه
Displacement Chromatography on Synthetic Ion - exchange Resins
In Part 1 of this series of papers (Partridge & Westall, 1949) it was shown that, whilst the baseexchange resin Zeo Karb 215 may be used with success for the separation of the neutral and acidic amino-acids, certain difficulties arise when the separation of basic substances is attempted. These difficulties were traced to the phenolic hydroxyl groups of the resin. Resins of the sulphonated pheno...
متن کامل[Ion exchange resins].
Ion exchange resins have been used to help formulate pharmaceuticals since the late 1950's. During that time they have proved to be safe and effective excipients and are now used in many commercial formulations throughout the world. In this article we will look at some of the common problems faced by formulators and how using ion exchange resins may be able to solve them. Ion exchange resins ar...
متن کاملPreparative Isolation of Amino Acids by Carrier Displacement Chromatography on Ion Exchange Resins* by Donald
Chromatographic separations of amino acids on ion exchange resins may be performed on a preparative scale either by elution (24) or by displacement (5-12). Some of the exceptional resolving power demonstrated in analytical separations by elution techniques (13, 14) disappears when larger columns with relatively higher loads are used (2). Displacement chromatography allows large quantities of so...
متن کاملDisplacement chromatography on synthetic ion-exchange resins. 1. Separation of organic bases and amino-acids using cation-exchange resins.
9. Accumulation of glutamate also occurred in isolated kidney cortex, spleen, lung and chorion. Six other tissues examined maintained a concentration gradient between tissue and medium, but did not increase the glutamate concentration above the original level. 10. It is pointed out that tissue slices afford a system in which problems of permeability and storage can be studied under controlled c...
متن کاملPreparative isolation of amino acids by carrier displacement chromatography on ion exchange resins.
Chromatographic separations of amino acids on ion exchange resins may be performed on a preparative scale either by elution (24) or by displacement (5-12). Some of the exceptional resolving power demonstrated in analytical separations by elution techniques (13, 14) disappears when larger columns with relatively higher loads are used (2). Displacement chromatography allows large quantities of so...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1963
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.83.6_655