PROCESS FOR PRODUCING PROTEIN HYDROLYSATES WITH CONTROLLABLE MOLECULAR MASS, STARTING FROM ALUMINIUM-TANNED SCRAP LEATHER
Waste scraps of pig skin previously tanned with aluminium are hydrolysed in an alkaline earth metal (preferably calcium hydroxide) soln. Ratio of dry skin to Ca(OH)2 is 1: (0.05-0.75) and of the dry skin and soln it is 1:(1.5-3.5), temp 50-150 deg.C, pressure 1-5 bars, reaction time 1-200 hours.
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Format: | Patent |
Sprache: | eng |
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