The food energy of carbohydrate, fat and protein recorded in many nutrition tables is the net available energy. It is equal to 16.7, 37.7, and 16.7 kilojoules per gram respectively. These are not the same as the heat of combustion determined calorimetrically.
Iowa Science Teachers Journal
© Copyright 1983 by the Iowa Academy of Science
Feinstein, H. I.
"Average Heat of Combustion and Available Energy of Carbohydrate, Fat and Protein,"
Iowa Science Teachers Journal: Vol. 20
, Article 9.
Available at: https://scholarworks.uni.edu/istj/vol20/iss2/9