Showing papers on "Arabitol published in 1965"
TL;DR: Mannitol dehydrogenase from D. viticola has been partially purified and shown to require TPN as a co-factor and other properties of the enzyme are described.
23 citations
TL;DR: In this article, a reagent consisting of a cyclic aldehyde, thiourea, and concentrated sulfuric acid, including glycerol and inositol, was shown to give orange, pink, or red colors whose intensities follow Beer's law.
Abstract: SUMMARY
When heated in a reagent consisting of a cyclic aldehyde, thiourea, and concentrated sulfuric acid, the sugar alcohols, including glycerol and inositol, give orange, pink, or red colors whose intensities follow Beer's law. The reagent is stable for 6 weeks or more in an amber bottle under refrigeration. Of the aldehydes tested, p-hydroxybenzaldehyde and p-dimethylaminobenzaldehyde were the most sensitive. Generally, the reactivity of the sugar aleohols was as follows: sorbitol > dulcitol > mannitol > erythritol > xylitol > arabitol > ribitol > glycerol > inositol. Carbohydrates and other interferences were removed by acid hydrolysis followed by degradation with hot alkali and treatment with ion-exchange resins. Hydrolysis, degradation, and removal of degradation products can also be done in a single operation with a mixture of ion-exchange resins. Important factors for reproducible quantitative results are the concentration of acid, thiourea, and aldehyde in the reagent, the time and temperature of heating, and the particular aldehyde used. Recovery from complex milieu was good (95–101.8%).
6 citations