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Fav十万个为什么
为什么食物会变质？
食物会变质，主要是由于微生物、酶和环境因素共同作用的结果。以下是具体原因：
1、微生物的作用：细菌、真菌和酵母菌等微生物会分解食物中的蛋白质、脂肪和碳水化合物，产生小分子腐败产物，导致食物变质。
2、酶的催化作用：食物中存在的酶会加速化学反应，如水果中的酶分解碳水化合物，导致腐烂；油脂中的酶引发氧化酸败。
3、环境因素：温度、湿度、氧气和光照等环境因素会加速食物的化学反应和微生物繁殖，例如高温促进细菌生长，高湿度加速霉菌繁殖。
总结：食物变质的原因主要包括微生物的分解作用、酶的催化作用以及环境因素的加速作用。这些因素共同导致食物营养成分的破坏和感官性质的变化，使食物失去食用价值。
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