Patent ID: 6352714
Filing Date: 2002-03-05
Classification: A23J,A23K,A61K

Abstract:
A method of producing a metal nutrient for use as an animal feed supplement, comprising the steps of heating a mixture of chrome leather scrap, water and an alkaline material at an elevated temperature in a range of about 180Â° F. to about 200Â° F. for a period of time sufficient to produce a protein hydrolysate and insoluble chromium compounds and until the pH of the mixture is reduced to a value of 8.5 to 9.0, separating the hydrolysate from said insoluble chromium compounds at said elevated temperature, adding an oxidizing agent to said hydrolysate to remove any undesirable trace organic materials, and admixing a water soluble metal salt selected from the group consisting of di-valent and tri-valent metals with the hydrolysate to produce a amino acid metal proteinate.