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US 5,210,182 AGranted
Extraction process for gelatin
AssigneeKraft General Foods, Inc.
InventorsMaurice Nasrallah, Parviz Ghossi, Joseph E. Spradlin, John R. Magnifico
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Abstract
Improved yield and gelatin quality is obtained by extracting conditioned collagen-containing material with water at lower temperature and shorter time conditions than previously used to remove high quality gelatin as quickly as possible. Very high quality gelatin is extracted initially. Acid conditioning yield is also improved by controlling pH between 1.5-2.0.
Claims16
A gelatin recovery process of improved gelatin quality and yield comprising the steps of:
- (a) conditioning comminuted collagen-containing material with acid over a period of time to swell the material and prepare it for gelatin extraction;
- (b) thereafter adjusting the acid-treated collagen-containing material in water to a water phase pH of from 5-8;
- (c) washing the pH-adjusted collagen-containing material to remove salt and other impurities until there is reached a cook pH of below 4.0;
- (d) thereafter extracting the collagen-containing material in a series of separate water extractions, wherein at least the first two extractions are made below 140.degree. F., for periods of time of 3.5 hours or less and at a water to collagen-containing material weight ratio of equal or greater than 1.5:1 and wherein the collagen-containing material does not come into contact with any water having a temperature above 140.degree. F.;
- (e) recovering the gelatin extracts in one or more batches;
- (f) concentrating the gelatin extracts;
- (g) solidifying and drying the gelatin;
- and
- (h) grinding the dried gelatin to give a quality gelatin product.
6 more elements
Dependencies are inferred from the claim text.