Dehairing of skins and hides
AssigneeNovozymes A/S
InventorsNiels Henrik Soerensen, Tine Hoff, Peter Rahbek Oestergaard, Pierre Cassland
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Abstract
The present invention relates to a method for the processing of hides or skins into leather, comprising enzymatic treatment of the hide or skin with carbohydrase in the soaking step. The present invention can achieve optimal fiber opening results in a relatively short period of time and at the same time does not cause loose grain, and meanwhile the pollution or impact on the environment is reduced in a maximum way.
Claims20
A method for loosening hairs on hides or skins comprising treating the hides or skins with an effective amount of a bacterial glutamyl endopeptidase in an aqueous solution having a pH in the range of 7 to 10, wherein the glutamyl endopeptidase is a serine endopeptidase that cleaves on the carboxy-terminal side of a glutamic acid residue and has a glutamyl endopeptidase ratio of at least 10.
Dependencies are inferred from the claim text.