Extraction of the Protein Components as Ammo-Acids Hydrolysates from Chrome Leather Wastes Through Hydrolytic Processes

摘要

This paper presents results of the investigations concerning the alkaline and enzymatic alkaline hydrolysis of the chrome leather debris coming out from natural leather processing as protein containing solid wastes. Collagen hydrolysates with low average molecular mass, considered chromium-free products, were characterized by atomic absorption, gas chromatography and HPLC, electrophoresis, IR and FT/IR ATR spectral analysis. Chemical composition, rich in essential amino-acids and protein hydrolisates with average molecular mass less than 10 kDa, as well as their physical properties are fully recommending the alkaline and enzymatic alkaline hydrolysis products for applications as bio-growth enhancers in foliar fertilization by environmental safe technologies, and eventually in organic crop production.