Value Per Nutrient Food 1.89 g 100 grams Leucine Beef, tenderloin, separable lean and fat, trimmed to 1/8" fat, all grades, cooked, roasted 1.89 g 100 grams Leucine Beef, tenderloin, separable lean and fat, trimmed to 1/8" fat, choice, cooked, roasted 1.89 g 100 grams Leucine Fish, mackerel, jack, canned, drained solids 1.88 g 100 grams Leucine Turkey, young hen, light meat, meat only, raw 1.88 g 100 grams Leucine Pork, Leg sirloin tip roast, boneless, separable lean and fat, raw 1.88 g 100 grams Leucine Chicken, broilers or fryers, dark meat, meat and skin, cooked, roasted 1.88 g 100 grams Leucine Fish, haddock, cooked, dry heat 1.88 g 100 grams Leucine Beans, kidney, all types, mature seeds, raw