METHOD FOR PRODUCING HYDROLYSED KERATINACEOUS MATERIAL

摘要

The invention relates to a method for producing digestible keratinaceous material comprising the steps of hydrolysing keratinaceous material in the presence of water in a hydrolyser at elevated temperature and at a pressure between about 2 bar and about 15 bar, and drying the resultant hydrolysed keratinaceous material comprising at least partly insoluble material in a dryer at a temperature/time/pressure combination which limits the drop in pepsin and/or ileal digestibility by less than 10%, and/or such that the pepsin and/or ileal digestibility remains higher than 85%, or such that the pepsin and ileal digestibility remains higher than respectively 75% and 85%. Preferably, the drying of the resultant hydrolysed partly soluble keratinaceous material is performed in a dryer at a temperature such that the keratinaceous material remains at a temperature below 90° C., preferably below 80° C.

主权项

1. Method for producing digestible keratinaceous material, preferably from feather, hair, hoof or nails, comprising the steps of hydrolysing keratinaceous material in the presence of water, in a hydrolyser with heat and at a pressure between about 2 bar and about 15 bar, preferably between about 2 bar and about 10 bar, and drying the resultant hydrolysed keratinaceous material comprising at least partly insoluble material in a dryer at a temperature/time/pressure combination which limits the drop in pepsin and/or ileal digestibility by less than 10%, and/or such that the pepsin and/or ileal digestibility remains higher than 85%, or which limits the drop in pepsin and/or ileal digestibility by less than 10%, wherein the pepsin and ileal digestibility remain higher than respectively 75% and 85%.