کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9616738 | 48866 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Transglucosylation of hydroquinone catalysed by α-glucosidase from baker's yeast
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 35, Issues 4â6, 1 September 2005, Pages 142-146
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 35, Issues 4â6, 1 September 2005, Pages 142-146
نویسندگان
Radivoje ProdanoviÄ, Nenad MilosaviÄ, DuÅ¡an SladiÄ, Mario ZlatoviÄ, Branislav BožiÄ, Tanja ÄirkoviÄ VeliÄkoviÄ, Zoran VujÄiÄ,