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| '''Food energy''' is the amount of ] in food. | '''Food energy''' is the amount of ] in food. | ||
| Food energy is typically measured in units of ]s, although the ] unit ''kilojoule'' (1000 ]s) is becoming more common. Some types of food contain more ] than others |
Food energy is typically measured in units of ]s, although the ] unit ''kilojoule'' (1000 ]s) is becoming more common. Some types of food contain more ] than others; ]s and ]s have particularly high food energy levels. | ||
| Note that the "calorie" used by dieticians for food is |
Note that the "calorie" used by dieticians for food is sometimes called a kilocalorie; it is equal to 4.1868 kilojoules. | ||
| == Energy content == | == Energy content == | ||
| * ''']''' contains '''4 ]''' per gram | * ''']''' contains '''4 ]''' per gram | ||
| * ''']''' contains '''4 kcal''' per gram | * ''']''' contains '''4 kcal''' per gram | ||
| * ''']''' contains '''9 kcal''' per gram | * ''']''' contains '''9 kcal''' per gram | ||
Revision as of 16:50, 20 August 2005
Food energy is the amount of energy in food.
Food energy is typically measured in units of calories, although the International System of Units unit kilojoule (1000 joules) is becoming more common. Some types of food contain more energy than others; fats and sugars have particularly high food energy levels.
Note that the "calorie" used by dieticians for food is sometimes called a kilocalorie; it is equal to 4.1868 kilojoules.
Energy content
- Protein contains 4 kcal per gram
- Carbohydrates contains 4 kcal per gram
- Fat contains 9 kcal per gram
See also
- energy
- food chain
- screaming jelly babies experiment showing food energy.