It can be calculated from bomb calorimetry data, subtracting 1.25 Cal/g protein for incomplete digestion. More commonly, it is calculated using 4 Cal/g for total carbohydrates, 4 Cal/gram for proteins, and 9 Cal/gram for total fats. It can also be calculated using data for specific food factors for FDA approved ingredients.
Yes
Calorific value. One calorie = 4.178 joule
Yes, it is a noun. It is a unit of energy, often expressed as heat, or as the energy value of food.
by burning it, and measuring the calories burned.
No, pineapple is not a negative calorie food.
what is calorie
Calories are determined by a device called a calorimeter. a calorie is the amount of energy (heat) released from a food. so that is exactly what a calorimeter does, measures the amount of heat food has given off. A piece of food is massed, ignitted and set inside the calorimeter. a tray of water sits above the ignited food. when the food is burned out, experts analyze the temperature of the water - thus how calories are determined.
A calorie is the energy value of food. Proteins, carbohydrates, and fats contain calories and produce energy.
It depends on the type of food. Some foods are calorie dense while others are low calorie.
Foods containing citric acid do not inherently have a specific calorie count. The calorie content of a food item is determined by its overall composition and ingredients, not just the presence of citric acid.
An empty calorie food is one that has little or no nutritional value. Twinkies brand snack cakes, for example, are empty because they have much sugar and fat, but very little protein and no vitamins or minerals.
1 food calorie (Cal) = 4.184 kilojoules (kJ)