Edible collagen casing

Details Edible collagen casing Edible collagen casing

A - Human Necessities

22

C

99/89

A22C 13/00 (2006.01)

Patent

CA 1071012

ABSTRACT OF THE DISCLOSURE In the manufacture of an edible collagen casing, hide colla- gen is formed into a slurry, swollen with acid, and extruded as a thin-walled hollow tube into a coagulation bath. The extruded casing is subsequently tanned or hardened in an aluminum sulfate tanning bath followed by treatment with a dilute solution of glutaraldehyde. The casing is washed, plasticized and dried. A substantial improvement in the shirring of the casing is obtained when the gel casing is treated with an aqueous solution containing at least 0.002% (and preferably 0.05 - 0.15%) sodium dihydrogen phosphate, neutralized to pH 6.0 - 8.0, subsequent to the glutaraldehyde treatment and prior to drying of the casing.

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