COMPARISON OF THE PROTEIN NUTRITIONAL VALUE OF TVP, METHIONINE‐ENRICHED TVP AND BEEF FOR ADOLESCENT BOYS

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Abstract
The protein nutritional value of an extruded soybean product resembling beef (TVP), a 1% DL methionine‐enriched TVP product and beef for adolescent boys was compared. The experimental diets supplied food energy to approximately maintain weight and were supplemented with vitamins and minerals. Mean nitrogen balances of subjects fed 4.Og nitrogen as TVP, methionine‐enriched TVP, or beef in successive 6‐day periods were −0.08, +0.48 and +0.32g per day, respectively. Nitrogen retention was significantly higher in response to methionine‐enriched TVP or beef than to TVP alone