| Résumé : |
Tanneries have found added profits by turning the by-products of cattlehide processing into usable materials for in a wide range of industrial and consumer products. Limed is one such material which is finding acceptance as both an ingredient and a functional additive for new food system.To participate in this opportunity, however, tanneries must be aware of the special requirements for food grade materials such as sanitation, restricted chemicals, ans FDA standards. Establishment of new market opportunities for untanned collagen will also require greater emphasis on cost reduction so as to be more competitive with other lower priced alternatives. Collagen constitutes the major protein component of skin, bone, tendon, and other forms of conective tissue. Because of its abundance, collagen has been the focus of considerable study as a food additive. There are many potential sources for obtaining commercial quantities of suitable collagen for use as a functional food ingredient, including beef hide, beef tendon, pigskin, bone extracts, and offal (table 1). Because of its availability as a by-product of the tanning industry, cattlehide corium has become the major source for obtaining purified, food grade collagen. This material is derived from lime-dehaired hides from which the grain layer is separated in splitting machines to obtain a middle layer of relatively pure collagen tissue. According to recent industry statistics, approximately 10% of the estimated 33 million cattlehide output each years is processed by lime splitters. |
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Current and future uses of limited hide collagen in the food industry in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXXI, N° 7 (07/1996)
