Fluorometric cell-based assay for β-galactosidase activity in probiotic gram-positive bacterial cells - Lactobacillus...

Although methods for measuring β-galactosidase activity in intact gram-negative bacterial cells have been reported, the methods may not be applicable to measuring β-galactosidase activity in gram-positive bacterial cells. This report focuses on the development of a fluorometric cell-based assay for measuring β-galactosidase activity in gram-positive cells.