Sausage casing coated in annatto and a method for coating the inner surface of the casing

摘要

A cellulose sausage casing suitable for transmitting a substantially even annatto colour (bixin or norbixin) while a food product is being processed inside such casing. This casing contains an internal coating comprising at least two components, one of which is a water-soluble annatto colouring (norbixin) and the other comprises one or more oily substances (bixin, where it is a second annatto colouring). This casing is useful in the food industry, and is suitable for colouring sausages and like food products.