Is there a difference between calorific value and calorimetric value of food, say protein? Or is calorific value the more accurate term to use? Also, what is the calorimetric value of protein?

Question

Elias Aboujaoude · Accepted Answer

Calorific value and calorimetric value mean the same thing.

A gram of fat has nine calories or nine kcal, whereas a gram of protein or carbohydrate has four calories or four kcal.

Daniel Arnold · Answer

undefined Although the terms "calorific value" and "calorimetric value" are sometimes used interchangeably, they have different meanings. Calorific value is the amount of energy released when a substance burns completely; it is typically measured in kilocalories per gram (kcal/g). On the other hand, calorimetric value is measured directly in a calorimeter and takes into account both the energy released during combustion and any energy lost through other processes, like incomplete combustion or heat loss. The calorific value of protein is roughly 4 kilocalories per gram (kcal/g), whereas the calorimetric value can vary depending on the protein's specific composition and measurement technique.