Description
香蕉的生命周期从深绿色开始→变成美味的黄色→以黑色结束（如果没有被吃掉的话）。是什么原因导致这种颜色变化呢？像大多数水果一样，香蕉会产生一种叫做乙烯的化学物质，这种物质有助于促进果实成熟。未成熟的香蕉很硬而且发酸，由于叶绿素的存在而呈绿色。当接触到乙烯时，香蕉中的酸开始分解，糖分增多，果肉也变得更柔软，叶绿素被破坏而变成黄色。香蕉产生的乙烯比其他水果多得多，这也导致香蕉成熟的快，腐败的也快。大量的乙烯导致香蕉中的黄色色素分解为褐色的斑点，果皮也容易破损。受损的香蕉会产生更多的乙烯，更加加剧腐烂的形成。因此香蕉不能存放在密封的袋子里，需要尽快送到肚子里。
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