1. (WO2006130937) EXTRACTION PROCESS OF JELLYLIKE COLLAGEN AND OFCHROME/COLLAGEN COMPLEX FROM CHROME TANNED LEATHER RESIDUES
(EN)This Invention Patent regards an Extraction Process of JellylikeCollagen and of Chrome/Collagen Complex from Chrome Tanned Leather Residuesfrom enzymes, where, in the first process, use is made of the JOANA FéLIX-1GEnzyme and the JOANA FéLIX-2G Enzyme, while in the second process the JOANAFéLIX-1C Enzyme is used. The technique is based on the preparation of LiquidJellylike Collagen, Jellylike Collagen, Collagen and Gelatin, Collagen Gel, DryJellylike Collagen, Solid Jellylike Collagen, Chrome/Collagen Complex Paste,Dry Chrome/Collagen Complex, Solid Chrome/Collagen Complex. The JellylikeCollagen can be used in the food, pharmaceutical,cosmetic, animal food, glue, photograph, fertilizer, plastic, rubber,leather industries, industries of chemical products for tannery and in varioussegments of the chemical industries. The Chrome/Collagen Complex Paste can beused in various segments of the chemical industries.
1. (WO1993014170) METHOD FOR THE REMOVAL OF METALS FROM STARTING MATERIALSCOMPRISING PROTEINACEOUS SUBSTANCES AS WELL AS MATERIAL OBTAINABLE ACCORDING TOSUCH A METHOD
(EN)The invention relates to a method for the removal of metals fromstarting materials comprising proteinaceous substances by labilizing andsolubilizing the metal with a treatment with chemical agent which includesleaching out, extraction, removal by means of redox and/or acid-base reactions,wherein this chemical treatment is combined with a treatment causingcross-linking of the proteins in the proteinaceous material. The invention allows for the treatment of e.g. leather wastes for the removal of chromium therein. After the appropriate treatment collagen is obtained. This collagen isstructurally undamaged, free of chromium and suitable for uses in cosmetics, drugs, high quality gelatin, food, etc. |
|
