Enzymes Source and Sold

Enzyme is known source from human, plants or animals body organ. Enzyme is an organic catalysts formed in living cells of animals or plants, which is essential in bringing about specific biochemical reactions in living cells. Enzymes can be classified by their method of activity.

Like on the list below is describe about the Catalytic function and the name of enzyme that work on that functions:

Oxidation-reduction: Oxidoreductases

Group transfer: Transferases

Hydrolysis: Hydrolases

Group removal: Lyases

Isomerization: Isomerases

Joining of molecules: Ligases

Over 3000 enzymes have been extracted and purified. An enzyme generally can be stored dry and cool for several months or even years, but in solution it may lose its catalytic ability in minutes or hours. Effort to stabilize the catalytic ability of enzymes have resulted in their immobilization on a solid support which makes them more resistant to pH and temperature changes. When immobilized an enzymes may remain active for months, even when suspended in water.

Several methods are available for immobilizing enzymes. This oldest is adsorption on an ion-exchange resin, but in use the enzyme is slowly leached into the solution. To eliminate loss during use the enzyme can be intermolecularly cross-linked with the support, covalently bonded to the surface of a chemically reactive support, or trapped in the interstices of a polymer by copolymerization with a suitable monomer.