![]() Does the history of food energy units suggest a solution to “calorie confusion”? /pmc/articles/PMC2238749/ fda.gov/files/food/published/Food-Labeling-Guide-%28PDF%29.pdf A food labeling guide: Guidance for industry.So basically, “calories” and “kilocalories” usually mean the same dang thing. Wait… so what is a regular calorie, then? The terms “calories” - without the capitalization distinction - and “kcals” are tossed around interchangeably to describe the same energy amount for both food and fitness purposes. For us outside the lab, a small calorie is a pretty useless measurement. Unfortch, the small calorie term is hardly ever used, except in chemistry and physics research. To make small and large calories a little less confusing, it’s assumed that the prefix “kilo” in the term “kilocalorie” was intended to point to the large calorie. So, how many calories are in a kilocalorie? One large calorie equals 1,000 small calories (since 1 kilogram equals 1,000 grams). On the flip side, a large calorie approximates the total energy needed to increase the temperature of 1 kilogram (2.2 pounds) of water by 1☌ (1.8☏). A capital “C” in “calories” signals a large calorie, while a lowercase “c” means it’s small.Ī small calorie is roughly the total energy needed to bump up the temperature of 1 gram (0.035 ounces) of water by 1☌ (1.8☏). If we’re talkin’ cals, these can be “small” or “large” calories. Science time: What’s the difference between kcal and calories? ![]()
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