Preparation of high-quality gelatine having low chromium content

Details Preparation of high-quality gelatine having low chromium content Preparation of high-quality gelatine having low chromium content

1976-06-14

1979-04-24

Schain, Howard E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260117, A23J 110, C09H 300

Patent

active

041511611

ABSTRACT:
A process for preparing low chromium content gelatine from a chrome stock containing trivalent chromium which comprises treating a trivalent chromium-containing stock with a solution of a compound which forms coordination complexes with trivalent chromium present in said stock, conditioning the thus treated stock to partially depolymerize the collagen network of said stock, oxidizing a substantial portion of the residual trivalent chromium in said stock to the hexavalent state, washing said stock containing hexavalent chromium to partially remove said hexavalent chromium, extracting gelatine from the remaining stock, and subjecting the extracted gelatine to ion exchange treatment to remove further hexavalent chromium.

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