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水果營養之爭





雖然鮮棗維生素含量已經非常高了,但是還有比它更高的,比如酸棗(900 mg/100g)和刺梨(2585 mg/100g)。刺梨的維生素C含量是鮮棗10倍以上,在水果這一類別裡是當之無愧的維生素C之王,只不過由於酸棗和刺梨都不是常見水果,所以並不能作為日常食物供給人們食用。


由於維生素C嘗起來比較酸,導致很多人誤認為水果越酸,維生素C含量越高,可事實上並非如此。根據圖中可知,鮮棗、番石榴、草莓雖然不怎麼酸,但是它們的維生素C含量卻比較高,而楊梅、楊桃、李子比較酸,維生素C含量卻並不高。可見水果越酸不代表維生素C含量越高,主要原因在於水果酸味除了由維生素C提供之外,還有很多呈酸味的有機酸(如蘋果酸、檸檬酸等)。




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