橘子含水量高，熱量在水果中處於中下水平。它的維生素C含量不是很高，遠低於獼猴桃、無花果等水果，適合減肥期間食用。
卡路裏(簡稱Cal)，音譯自英文Calorie，定義為在1大氣壓下，將1克水升高到1攝氏度所需的熱量；卡路裏是壹種能量單位，在營養測量和健身手冊中仍被廣泛使用。國際標準能量單位是焦耳。
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