CALORIFIC VALUES OF OUR FOODS.
What are the calorific value of food groups?
The most important physiological calorific values of nutrients are:
38,9 kJ/g fats (9,29 kcal/g)
17,2 kJ/g proteins (4,11 kcal/g) (physical calorific value: 23 kJ/g)
29,7 kJ/g ethanol (alcohol) (7,09 kcal/g)
How do you calculate the calorific value of food?
the calorific value can be calculated. For other foods (e.g. meat products), it is measured using a device called a "bomb calorimiter". Essentially, you put the food in a chamber filled with pure oxygen and burn it, measuring the amount of heat (i.e. energy) that is generated.
What does calorific value meaning?
Calorific value is defined as the amount of heat energy released during complete combustion of a unit mass of a fuel. It is expressed in kJ/kg.
Why is the calorific value of food important?
Calorific value is an important parameter to measure the energy content of fuels and food. You use it for finding the fuel efficiency and the heat produced by the human body during metabolism. The energy content of food breaks during digestion to release the energy in the body.
What does a high calorific value mean?
Calorific value: Calorific value is defined as the amount of heat energy produced on complete combustion of 1 kilogram of a fuel. It is expressed in a unit called kilojoule per kg. The higher the calorific value of a fuel, more amount of heat energy is produced and hence ,more is its efficiency.
What is the calorific value of protein?
5.65 kcal/g
The highest calorific value is also known as gross energy or gross calorific value. The gross calorific value of fats is 9.45 kcal/g, for carbohydrates, it is 4.1 kcal/g and for proteins, it is 5.65 kcal/g.
Which food has the highest calorific value?
The correct answer is Fats. Fats have the highest gross calorific value.
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