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  • Title: Conversion of D-arabinose to D-erythroascorbic acid and oxalic acid in Sclerotinia sclerotiorum.
    Author: Loewus FA, Saito K, Suto RK, Maring E.
    Journal: Biochem Biophys Res Commun; 1995 Jul 06; 212(1):196-203. PubMed ID: 7612007.
    Abstract:
    D-glycero-Pent-2-enono-1,4-lactone (trivial name: D-erythroascorbic acid) occurs in the phytopathogen, Sclerotinia sclerotiorum (Lib.) de Bary, where it has a potential role as precursor of oxalic acid. On Glc/yeast/malt medium, S. sclerotiorum produces only nominal amounts of D-erythroascorbic acid but even partial replacement of Glc by D-Ara increases production of erythroascorbic acid and oxalic acid. Use of D-[1-14C]-, -[3-14C]-, or -[6-14C]Glc and D-[5-3H]-, -[2-14C,5-3H]-, or -[UL-14C]Ara provide additional information on erythroascorbic acid biosynthesis and cleavage. The latter process resembles that obtained by peroxygenation of erythroascorbic acid in alkaline solution. An unknown erythroascorbic acid-like compound also occurs in both Glc- and Ara-based cultures.
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