2.3. Measurement of enzyme activities
For a given enzyme การเกิดปฏิกริยา, experiments were performed at the same time under identical growth conditions (same growth medium and substrate concentration), allowing comparisons between strains considering that activity values in the given periods of time can be assimilated to productivity, more particularly to overall productivity at 24h (Pirt, 1985) (Figs. 1–3). Therefore it is not intended here to make comparisons on the basis of specific rate of product (enzyme) formation.