No studies have shown that more than 2 grams per kilogram, or
1 gram per pound, is of value.
Sources Food
Meat, poultry, fish, dairy, and
eggs are rich sources of high
biological value protein. The protein content of cooked meat and dairy products is between 15% and 40%.
Plant sources of protein (legumes, nuts, and seeds) can
contribute to protein requirements. The protein content of cooked cereals, beans, lentils, and peas ranges from 3% to 10%.
Protein content of selected foods is listed in
Table 6
.
Right
Protein
The right protein is:
1)
Enough
2)
Good quality
3)
Not overly linked with su
bstances bad for health
For example, peas or gelatin cont
ain protein, but the quality is
poor.
Meat may be a good source of high quality protein, but bad if
associated with lots of cholesterol and saturated fats.
Fish may be a good source of high-quality protein, but bad if
associated with mercury or other toxins.
These concepts are discussed in more detail below, under,
Bad
Company
on page
63
.
Source
Serving
Size
Protein,
grams
Beef, round steak, cooked
3 ounce
27.0
Ground beef, cooked
3 ounce
25.7
Turkey breast
3 ounces
25.7
Veggie burger
3 ounce
25.7
Source
Serving
Size
Protein,
grams
Pork chop, cooked
3 ounces
24.5
Turkey, dark meat
3 ounces
24.3
Chicken, dark meat
3 ounces
23.6
Tuna, water packed
3 ounce
22
Chicken breast
3 ounces
18.9
Salmon, cooked
3 ounce
16.8
Cheese pizza
2 slices
15.4
Cheese, cottage, 1% fat
½ cup
14.0
Yogurt, low-fat
1 cup
11
Lentils, cooked
½ cup
9.0
Milk, fat-free
8 ounces
8.3
Peanut butter
2 tablespoons
8.1
Milk, whole
8 ounces
8.0
Split peas, cooked
½ cup
8.0
Beans, black-pinto-garbanzo
½ cup
7.5
Cheese, American
1 ounce
7.0
Tofu
3 ounces
7.0
Macaroni, cooked
1 cup
6.8
Milk, soy
8 ounces
6.7
Egg
1 large
6.3
Ham
1 ounces
5.9
Almonds
1 ounces
5.4
Bread, wheat or white
2 slices
5.2
Ice cream, regular
1 cup
5.0
Green peas, cooked
½ cup
4.1
Corn, cooked
½ cup, or 1 ear
2.5
Rice, cooked
½ cup
2.2
Orange
1 large
1.7
Banana
1 medium
1.2
Potatoes, white
½ cup
1.2
Green beans, cooked
½ cup
1.0
Carrots, cooked
½ cup
0.8
Apple
1 large
0.0
Table 6. Protein content of selected foods.
Nutrition for Sports, Essentials of 57