Abstract: Food casings or packaging impregnated and/or coated on the inside with at least one transferrable coloring and/or flavoring agent are provided. In some embodiments, the coloring and/or flavoring agent includes a hydrolyzed vegetable protein (HVP), optionally an acid-hydrolyzed vegetable protein, a yeast extract, or a combination thereof. Also provided are methods for imparting a color to a food product, which in some embodiments can include maintaining the food product in the food casing or packaging impregnated and/or coated on the inside with at least one transferrable coloring and/or flavoring agent for a time and under conditions sufficient to impart a color to the food product, wherein the coloring and/or flavoring agent includes a hydrolyzed vegetable protein (HVP), optionally an acid-hydrolyzed vegetable protein, a yeast extract, or a combination thereof.

Abstract: The present invention relates to a perforated food casing based on fiber-reinforced cellulose, which includes a plurality of openings, the maximum diameter of said openings being less than 0.18 mm and the minimum diameter of the openings being such that air and water vapor trapped between the casing wall and the sausage meat are able to quickly escape.

Abstract: The invention relates to a tubular regenerated cellulose-based food casing which is impregnated with smoke aroma. The impregnation with a light smoke aroma reduces the L* value (determined in accordance with the CIE-LAB method) of the casing by no more than 5 and is then still at least 40. The L* value of the casing removed from the food has changed by no more than ±5. The casing is used as artificial sausage casing, in particular for raw sausage, preferably for salami, hard smoked sausage and dried sausage.

Abstract: A seamless, tubular food casing produced by extrusion or coextrusion, wherein at least one layer of the casing comprises a mixture of: a) thermoplastic starch and/or a thermoplastic starch derivative and b) at least one further polymer, in which the further polymer is a homopolymer or copolymer comprising at least one selected from the group consisting of hydroxycarboxylic acid units, a poly(ester urethane), a poly(ether urethane), a poly(ester ether urethane) and a poly(alkylene carbonate) of the formula —[CHR1—CHR2—O—CO—O—]n, where R1 and R2 independently of one another are a hydrogen atom or a (C1-C4)alkyl group and n is an integer from 10 to 5000, and wherein the casing carries internally at least one transferable coloring, aroma substance and/or flavoring.