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Rev. chil. nutr ; 35(4): 443-451, dic. 2008. tab, graf
Article in Spanish | LILACS | ID: lil-520627

ABSTRACT

The protein quality of a flaxseed diet was evaluated by biological methods. Forty-eight recently weaned male Wistar rats with 21 days of life and average weight of 42 g were randomly divided in 4 groups (n=12) and were fed, respectively, with a diet based on flaxseed added with casein (flaxseed group), casein alone (control group), casein with bigger concentration of oil and fibers to be compared to the flaxseed diet (modified control group) and a diet free of protein (non protein group). Animal weight, food and protein consumption were registered every other day to obtain the values for the Protein Efficiency Ratio (PER), Food Efficiency Ratio and Net Protein Ratio (NPR). At the end of the experiment, the nutritional value of the flaxseed diet was inside the reference values for protein quality; however, it was not equivalent to the casein diet.


La calidad proteica de una dieta a base de linaza fue evaluada por medio de métodos biológicos. Fueron usados 48 Rattus norvegicus, Wistar, machos, con 21 días de vida, recién destetadas y con peso promedio de 42g. Los animales fueron divididos en 4 grupos (n=12) que recibieron, respectivamente, dieta a base de linaza adicionada de caseína, caseína, caseína con mayor concentración de aceite y fibras para equipararse a la dieta de linaza y dieta libre de proteína. Cada dos días fueron registrados el peso animal, el consumo de alimento y de proteína para aplicación de los métodos de evaluación biológica Razón de Eficiencia Proteica (PER), Coeficiente de Eficiencia Alimentaria (CEA) y Razón Proteica Neta (NPR). Al final del experimento, el valor nutricional de la dieta de linaza estuvo dentro de los valores de referencia de calidad proteica, pero no fue equivalente al de la dieta a base de caseína.


Subject(s)
Animals , Rats , Growth/physiology , Diet , Functional Food , Flax/metabolism , Energy Intake , Rats, Wistar , Weight Gain
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