The activity of the disaccharidases lactase (LAC, EC 3.2.1.23), maltase (MAL, EC 3.2.1.20), and sucrase (SUC, EC 3.2.1.48) in BBM was determined by measuring the abundance of glucose released during incubation for 30 min at 37 °C with the substrates lactose, maltose, and sucrose, respectively