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handle: 10261/92043
[ES] En este trabajo se hace un estudio del aprovechamiento de cabezas y vísceras de túnidos, mediante diferentes hidrólisis ácidas y enzimáticas, para alimentación animal. Para las últimas se utilizó papaína, pronasa, pepsina, tripsina y pancreatina, y los productos finales obtenidos son totalmente solubles y con sabor a marisco Los hidrolizados ácidos son líquidos, de color ámbar y de alto contenido salino. Los valores correspondientes a los rendimientos proteicos con relación a la proteina de la materia prima son los siguientes: 85,76%, cuando se emplea pepsina; 84.64% por el método ácido; 81,42% con pronasa; 78.88% con papaina; 73,60% con tripsina y 67.74% con pancreatina. Por Último hemos fabricado, con estos productos, sustitutivos de leche para alimentación de terneros, cuya composición es: proteina 2.6%; grasa vegetal 2,5%; lactosa 5.5%; alginato sódico 0,75%
[EN] A study about exploitation of tuna fish heads and viscera is carried out in this paper by means of different acid and enzymatic hydrolysis. In case of the enzymatic hydrolysis, papain, pronase. pepsin, trypsin and pancreatin were used. The final products obtained, when enzymatic hydrolysis is used, are completely soluble and tasting of seafood. The acid hydrolyzates are amber-coloured, high salt content liquids. The protein yield, in relation to the protein of the raw material is: 85,76% with pepsin; 84.64% by acid method; 81.42% with pronase; 78.88% with papain; 73.60 with trypsin and 67,74 with pancreatin. Finally, with these products we have manufactured rmilk substitutes to feed calves The above mentioned substitutes have the following chemical composition: protein ... 2.6%, vegetable fat ... 2.5%, lactose ... 5.5%, sodium alginate ... 0.75%
13 páginas, 5 cuadros, 3 figuras
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