Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9616738 | Journal of Molecular Catalysis B: Enzymatic | 2005 | 5 Pages |
Abstract
Hydroquinone α-isomaltoside and hydroquinone α-glucoside were synthesized by transglucosylation in an aqueous system with baker's yeast α-glucosidase from hydroquinone and maltose as a glucosyl donor. Only one phenolic group was glucosylated, with α-selectivity, and the nature of the reaction products was governed by the concentration of hydroquinone. The optimal conditions for synthesis of glycosides were 9 mM hydroquinone and 1.5 M maltose in a 100 mM sodium citrate/phosphate buffer at pH 5.0 and 30 °C for 20 h. Under these conditions both hydroquinone α-glycosides were obtained in nearly equimolar amounts with a total molar yield of 28% with respect to hydroquinone and a total glycoside concentration of 1 mg/mL in the reaction mixture.
Related Topics
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Catalysis
Authors
Radivoje ProdanoviÄ, Nenad MilosaviÄ, DuÅ¡an SladiÄ, Mario ZlatoviÄ, Branislav BožiÄ, Tanja ÄirkoviÄ VeliÄkoviÄ, Zoran VujÄiÄ,