I hope your sausages had natural skins, not these nasty synthetic ones.
Tubular foodstuff casing made of cellulose hydrate, in particular synthetic sausage casing
Document Type and Number:
United States Patent 5262211
Abstract:
A tubular foodstuff casing, in particular synthetic sausage casing, based on cellulose contains a di-n-didecyl-dimethylammonium compound as a fungicidal agent, which is optionally used in admixture with salts of sorbic acid, fungicidal heterocyclic compounds, such as an isothiazolone compound, or glycerol monolaurate. The coating prevents mold attack on the casing.