PROCESS FOR PRODUCING PROTEIN HYDROLYSATE CONTAINING LESS CHROMIUM THAN 1 PPM, AS WELL AS METAL CHELATE OR AMINO ACID-OLIGOPEPTIDE

PROCESS FOR PRODUCING PROTEIN HYDROLYSATE CONTAINING LESS CHROMIUM THAN 1 PPM, AS WELL AS METAL CHELATE OR AMINO ACID-OLIGOPEPTIDE

A protein hydrolysate is prepd. by alkaline hydrolysis from previously desalted, comminuted chrome tanned leather. This hydrolysate contains less than 1 ppm Cr, based on solids content. An excess quantity of a base is added for hydrolysis (calculated on Cr concn.) so that the initial concn. of 3.3-0...

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Bibliographische Detailangaben
Hauptverfasser: BAKA,ISTVAN,HU, KISS ARPADNE KOVACS,ILONA,HU, PATONAI,JOZSEF,HU, SZOLCSANYI,PAL,HU, BOZZAY LASZLONE HATAS,ZSUZSANNA,HU, KELEMEN,JANOS,HU, TARR,GYOERGY,HU, NAGY,FERENC,HU, HORVATH,ATTILA,HU, HANAK,LASZLO,HU, BARNA,LAJOS,HU, TOTH,IMRE,HU, BAKAN,JOZSEF,HU, SZANYA,TIBOR,HU, STRBKA ANDRASNE TAKACS,GYOERGYI,HU
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PEPTIDES
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Zusammenfassung:A protein hydrolysate is prepd. by alkaline hydrolysis from previously desalted, comminuted chrome tanned leather. This hydrolysate contains less than 1 ppm Cr, based on solids content. An excess quantity of a base is added for hydrolysis (calculated on Cr concn.) so that the initial concn. of 3.3-0.03 mol hydroxy-ion / cu.dm should yield pH 12.6-12.7 at completion of the reaction. The reaction mix is allowed to stand at room temp. for 3-48 hrs., followed by hydrolysis at 1-5 bar pressure and 70-150 deg.C for 0.1-10 hrs.. The Cr content of the hydrolysate is determined and once its min. value is reached, Cr hydroxide formed is removed instantly, at the prevailing reaction temp.. (1pp Dwg.No.0/0)