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蔬菜加盐出水的原理

更新时间: 2020-10-11 00:00:00     

液体具有渗透属性,会在具有半透膜的情况下有浓度较低的区域流向浓度较高的区域。蔬菜内含有大量水分,而构成蔬菜的植物细胞的细胞膜相当于一层半透膜,在不消耗能量的情况下,只能透过水分和小分子物质,不能透过大分子的盐类。当我们向蔬菜加盐时,蔬菜外部盐的浓度高于蔬菜内部浓度,蔬菜内部水分会受到渗透压的影响从蔬菜内部流出。所以蔬菜加盐才会出水。

关键词: 蔬菜 原理

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