Transglycosylation of a β-galactosyl radical, in the course of enzymic hydrolysis of lactose, in the presence of selected polyhydroxyalcohols.

摘要: Sorbitol, xylitol, erythritol and lactitol were used as the acceptors of galactosyl radicals, in process transgalactosylation accompanying hydrolysis lactose, conducted with β-galactosidase (4.0 ml Lactozym 3000 was added to 430 1.45 M lactose 0.95 polyhydroxyalcohols). The following concentrations derivatives polyols obtained after for 4 h at 40 °C: 0.31 Gal-erythritol, 0.22 Gal-xylitol, 0.18 Gal-sorbitol 0.14 Gal-lactitol. A quadruple increase xylitol content dry matter a solution (from 11.5% (w/w) 44.5% brought about 2.3-fold product (15.2% matter).