Degreasing Enzymes

Lipases offer the tanner two advantages over solvents or surfactants: improved fat dispersion and production of waterproof and low-fogging leathers. Alkaline lipases are applied during soaking and/or liming, preferably in combination with the relevant protease. Among other things, the protease opens up the membranes surrounding the fat cell, making the fat accessible to the lipase. The fat becomes more mobile and the breakdown products emulsify the intact fat, which will then distribute itself throughout the pelt so that in many cases a proper degreasing with surfactants will not be necessary. This facilitates the production of waterproof and low-fogging stock. Lipases can also be applied in an acid process, e.g. for pickled skin or wool-on and fur, or a semi-acid process for wetblue.

Not many companies offer this solution by enzymatic way. AETL is one of the few companies offering degreasing enzyme - SEBDegrease successfully.