Sausage casing
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Sausage casing, also known as sausage skin or simply casing, is the material that encloses the filling of a sausage. Natural casings are made from animal intestines or skin; artificial casings, introd
Casing from beef (in bucket) and sheep (on rear edge of bucket)
Sausage casings
Hog casings, packed in salt, from a vacuum pack
A salami and the collagen casing (below) it came in
Collagen
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Collagen is the main structural protein in the extracellular matrix of the connective tissues of many animals. It is the most abundant protein in mammals, making up 25% to 35% of protein content. Amin
Sausage casing
…filling of a sausage. Natural casings are made from animal intestines or skin; artificial casings, introduced in the early 20th century, are made of collagen and cellulose. The material is then shaped via a continuous extrusion process—producing a single sausage casing of indefinite length—which is then cut…
Collagen
The D-period of collagen fibrils results in visible 67nm bands when observed by electron microscopy.