It depends on the enzyme that you want to test. If the enzyme uses or produces a compound that is detectable, and you know what compounds the enzyme needs to use/produce this, you can add a known amount of the substrate (the compound that is used) to the enzyme and measure the product (the compound that is produced) over time.
This approach only works if there is only one enzyme that can act on the compound you are measuring.
If you already have that enzyme in pure form you can make an antibody against it and do an Enzyme linked immunosorbent assay (ELISA) or a Western blot, which will give you a signal if the enzyme is present.
An enzyme referred to as Bromelain, coming from the type of plant a pineapple is(a Bromeliad plant).
Casease is an enzyme that is produced by bacteria. It is used to hydrolyze casein, which is a protein found in milk.
This test measures blood levels of angiotensin-converting enzyme (ACE)
Cellulase is an enzyme found in herbivorous animals as it assists the breakdown of cellulose found in all plant matter.
biurets test is the biochemical test for enzymesan enzyme is a protein and as the biochemical test for proteins is biurets,, its the same
the mitochondria
The phosphatase test in milk measures the amount of phosphatase enzyme in the milk. The phosphatase enzyme should be inactivated by pasteurisation. If the phosphatase test is not negative, there is a problem with pasteurisation or recontamination with unpasteurised milk.
A fair test is something that doesn't change in a test for a plant.
gelatinase
No you do not need to fast.
in the absences of the enzyme the reaction is very slow,and at the end of the reaction enzyme is separated that shows substrate 1st bind to the enzyme
When the isolated beta amylase enzyme is subjected to the biuret test, you will observe a color change from yellow to blue. This is because the biuret reagent reacts with the peptide bonds in the enzyme, causing a change in color.