A recombinant β-galactosidase, which was obtained from the β-galactosidase C gene of Bacillus circulans and cleaves the non-reducing end galactosyl residue of β (1→ 3)-linkages selectively, was immobilized using CNBr-Sepharose. Although the effect of pH was not changed by the immobilization, the thermostability and stability in the presence of DMF were increased. Optimization of the transglycosylation using para-nitrophenyl β-d- ...
