Back to results
US 4,374,063 AGranted
Process for the preparation and purification of gelatin and pyrogen-free gelatin so prepared
AssigneeGeneral Foods Corporation
InventorsGeorge A. Consolazio, Gury Pano
Life of this patent
Estimating the term…
Abstract
A process of preparing an essentially pyrogen-free gelatin solution from cattle hides and/or tanner's stock is described. The essentially pyrogen-free gelatin solution and the use of the pyrogen-free gelatin solution for various pharmaceutical, surgical and medical uses are also described.
Claims5
A process of preparing an essentially pyrogen-free gelatin solution which comprises:
- (a) conditioning cattle hides and/or tanner's stock in a caustic solution in a pyrogen-free vessel;
- (b) water washing the hides and/or stock with pyrogen-free water;
- (c) treating the hides and/or stock with an acid solution;
- (d) extracting gelatin at a pH of from 3.7 to 4.7 from the hides and/or stock;
- (e) filtering the extract through a low porosity filter;
- and
- (f) recovering an essentially pyrogen-free gelatin solution.
4 more elements
Dependencies are inferred from the claim text.