METHOD FOR DEFATTING OF CRUDE SHEEPSKIN-AND-FUR MATERIAL Russian patent published in 2006 - IPC C14C1/08 C14C5/00 C12S7/00 

FIELD: defatting of crude sheepskin-and-fur material.

SUBSTANCE: method involves treating crude material in bacterial suspension having lipolytic activity of 20-30 units/g and proteolytic activity of 2.5-3.5 units/g. Suspension contains product of total microorganism vital activity used in an amount of 4-8 g/dm³, synthetic surfactant used in an amount of 0.25-0.5 g/dm³, and prokaryotic crop of Pseudomonas sp. type used in an amount of 10⁷-10⁹ cells/cm³, water the balance. Treatment is conducted at temperature of 40±2 C during 45 min by providing mechanical actions, and liquid coefficient of 7-10.

EFFECT: improved quality of defatting sheepskins, improved elastoplastic properties and reduced level of toxic contamination of sewage water.

3 dwg, 4 tbl