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1kg是多少卡路里
更新时间: 2020-11-04 00:00:00  

卡路里(简称“卡”,缩写为"cal")的定义为将1克水在1大气压下提升1摄氏度所需要的热量。

营养学用的“15度卡路里”:将1克水在1大气压下由摄氏14.5度提升到15.5度所需的热量,约等于4.1855焦耳。

由于相对我们日常摄取的热量,“卡路里”这单位的量度还是太少,现时营养学普遍采用另一个由“卡路里”演化的单位“千卡”(kcal或C,又称“大卡”)。1千卡等于1000卡路里,约4186焦耳。脂肪的热量约9千卡每克;糖类和蛋白质的热量都只有4千卡每克。

故一千克脂肪约合9000千卡

关键词: 1kg 多少 卡路里

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