Concentrated swelling of collagen in preparation of edible...

Details Concentrated swelling of collagen in preparation of edible... Concentrated swelling of collagen in preparation of edible...

A - Human Necessities

22

C

18/781, 99/89

A22C 13/00 (2006.01)

Patent

CA 1071013

ABSTRACT OF THE DISCLOSURE In a process for producing a tubular collagen casing from a hide collagen source which comprises the steps of comminuting said collagen and forming a slurry, swelling said collagen with acid, then extruding, coagulating, tanning, and drying, the improvement which comprises the steps of substan- tially completely swelling collagen, in which the epidermal layer and hair has been removed, with a relatively concentrated weak non-toxic acid having a dissociation constant in water of from about 1 x 10-6 to about 1 x 10-3, e.g., lactic acid, citric acid, etc., for a time sufficient to effect substantial swelling of the collagen and then comminuting the collagen for forming a slurry. An advantageous feature of this improvement is that it permits forming desirable collagen casing from a collagen source obtained from a hide which has been subjected to substantial liming.

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