微波灭菌是指什么?

2025-04-08 06:39:44
推荐回答(1个)
回答1:

可以用微波炉杀菌。
现在商场里出售的大部分微波炉(个别老式旋转的除外),在操作面板上都会有这个选项“微波杀菌”。
微波杀菌的原理:由于微生物细胞液吸收微波的能力优于周围的其它介质(比如食物、空气、水),因此在微波电磁场中的细胞将迅速破裂而导致菌体细胞死亡。
微波炉的加热原理:利用微波炉内部的磁控管,将电能转变成微波,以2450MHZ的振荡频率穿透食物,当微波被食物吸收时,食物内之极性分子(如水、脂肪、蛋白质、糖等)即被吸引以每秒钟24亿5千万次的速度快速振荡,这种震荡的宏观表现就是食物被加热了。

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