Collagen is a very common, naturally occurring long fibrous protein with remarkable properties. It has been used for many years as the primary raw material for various applications. The major use of collagen is for the production of sausage casings. The desire by sausage manufacturers for high speed stuffing, coupled with a reliable supply of casings, has meant that many producers have switched to collagen. Collagen casings have many benefits. They are made from an inherently safe material, and the collagen extraction methods used make the casings free from health risks.