These enzymes are distributed among higher animals,microorganisms and plants in which they fulfil a key role in the biological turnover of lipids.They are required as digestive enzymes to facilitate not only the transfer of lipid from one organism to another, but also the deposition and the mobilization of fat that is used as an energy reservoir within the organism. They are also involved in the metabolism of intracellular lipids, and, therefore, in the functioning of biological membranes. Lipases have been extensively investigated with respect to their biochemical and physiological properties, and lately for their industrial applications.