Study of quantification and validation methodologies of soy proteins and collagen and technological uses in meat products

C. M. Della Torre, J.

Comminuted meat products, such as frankfurters, fresh ground sausages and hamburgers are exposed to fraud by the abusive use of protein extensors of the types collagen and soy proteins, used in meat products because of their technological benefits, with reduced processing costs, although they are considered limiting, with regard to essential amino-acids, and producing adverse effects in sensory characteristics. The effective control of addition levels is not properly controlled by the Sanitary Surveillance bodies in Brazil, due to the lack of a validated quantitative analytical methodology for soy proteins and because there are no legal limits to collagen inclusion in meat products. As a contribution to the establishment of maximum contents and effective control of soy proteins and collagen, this project sought: a) to validate intra-laboratorially the official AOAC methodologies in the quantification of hydroxyproline (collagen) and soy proteins in meat products; b) to evaluate proximate composition and technological influence of extensors addiction to Lyoner sausage, and c) to present both sensorial and physicochemical Adolfo Lutz Institute analytical routine results of commercial products like frankfurters, fresh ground sausages and minced beef meat. The formulation and processes were the commercially used for meat emulsion batter, Lyoner sausage and canned emulsion. Beef mea