Abstract

A highly selective detection system for d-sorbitol and d-mannitol is described. Although these alditols have many chiral carbons, they show almost no optical rotation. However, in the presence of molybdate in a medium of low acidity, they form anionic complexes with molybdate that have remarkably large specific rotations. The detection system consists of an anion-exchange column using a molybdate solution as the eluent and a polarized photometric detector, which is a non- modulated polarimeter of our own design. With this system, alditols can be identified in foodstuffs after simple pretreatment.

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