[Illustration: FIGURE 83.—COMPARATIVE WEIGHTS OF 100-CALORIE PORTIONS OF
FOODS.]
The fat in one ounce of flour yields (255 x 0.011 =) 2.80 Calories. The carbohydrates in one ounce of flour yield (113 x 0.763 =) 86.21 Calories.
Total Calories furnished by 1 ounce of flour are (11.97 + 2.80 + 86.21 =) 100.98.
Butter.—The fuel content of butter is (see United States Department of Agriculture, Bulletin No. 28, p. 54):
1 per cent protein; 85 per cent fat; no carbohydrates.
1 ounce of butter contains 0.01 ounce of protein, 0.85 ounce of fat, and no carbohydrates.
The protein in one ounce of butter yields (0.01 x 113 =) 1.13 Calories.
The fat in one ounce of butter yields (0.85 x 255 =) 216.75 Calories.
Number of total Calories furnished by one ounce of butter is (1.13+216.75=) 217.88.
Sugar.—The fuel content of sugar is (see United States Department of Agriculture, Bulletin No. 28, p. 65) no per cent protein; no per cent fat; 100 per cent carbohydrates.