| 摘要 |
A process for separating L-ascorbyl 2-monophosphate from a mixture of the products of the desalting of the product mixture obtained from the phosphorylation under basic conditions of an L-ascorbic acid salt is described. This process is characterized by passing an aqueous solution of the desalted mixture containing amongst other components the desired L-ascorbyl 2-monophosphate through a column of a basic anion exchange resin, with resulting adsorption of the components onto the resin, desorbing amongst other adsorbed components said L-ascorbyl 2-monophosphate from the resin using as the eluent an aqueous alkali hydroxide solution, and collecting from the eluate the fraction which contains as its principal dissolved component the desired L-ascorbyl 2monophosphate in the form of the appropriate mono-alkali metal salt. The so obtained L-ascorbyl 2-monophosphate is especially stable against thermal and oxidative degradation compared with L-ascorbic acid (vitamin C) itself, and is thus suitable as a more stable form of ascorbic acid for use as an additive for foodstuffs, animal feedstuffs and cosmetic products.
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