Hello! Im working with soil enzymes activity and I would like to know which is the best suitable units to express the enzyme activity, if is it per gram of dry soil or per organic matter unit. Thanks!
Express as units of viscosity changes (endocellulase), μg of glucose (exocellulase), and μmoles of ... https://www.sciencedirect.com/topics/earth-and-planetary-sciences/soil-enzyme-activity
Enzyme activity = moles of substrate converted per unit time = rate × reaction volume. Enzyme activity is a measure of the quantity of active enzyme present and is thus dependent on conditions, which should be specified. The SI unit is the katal, 1 katal = 1 mol s−1, but this is an excessively large unit.
https://en.m.wikipedia.org/wiki/Enzyme_assay
Enzyme activity in soil can also be expressed as a unit: mg N-NH4 kg−1 d.m. of soil 18 h−1.
https://www.mdpi.com/2077-0472/10/4/135/pdf
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