Question

The gross calorific value of protein is_______________ kcal/g

• A. 4.1
• B. 5.65
• C. 9.45
• D. 9

Answer 1

The correct option is B 5.65

The gross calorific value or gross energy value is defined as the amount of heat energy liberated by the complete combustion of 1g of food in a bomb calorimeter. A bomb calorimeter is a closed metal chamber filled with oxygen.
The gross calorific value of protein is 5.65 kcal/g.1 kcal is defined as the amount of energy required to raise the temperature of 1kg of water by 1℃.

The gross calorific value of carbohydrates is 4.1 kcal/g. The gross calorific value of fats is 9.45 kcal/g.