The enzymatic activity of lactase is essential for the catabolic processing of the disaccharide lactose. Here, the activity of lactase found in dietary supplements is assayed using a colorimetric assay. This provides students with an experimental platform for understanding the activity of lactase and enzyme kinetics.
Leksmono, C. S., Manzoni, C., Tomkins, J. E., Lucchesi, W., Cottrell, G., Lewis, P. A. Measuring Lactase Enzymatic Activity in the Teaching Lab. J. Vis. Exp. (138), e54377, doi:10.3791/54377 (2018).