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8月3日,国家食品药品监督管理总局官网转发“饮食参考(微信公众号)”一篇题为《马未都,不懂别瞎说!西瓜400天不腐挺正常!》的文章,引起了社会的广泛关注。 以下为文章全文: 这两天微信朋友圈里面疯传一段小视频,知名艺人马未都现场演示神奇的西瓜。 这个西瓜是去年的,到现在已经400多天了,竟然没有腐烂! 更神奇的是,马未都用一把长刀把西瓜切开,发现这西瓜里面竟然是空空如也。 然后马老板语重心长的说道,我们能对食品安全放心吗? 可是,对于自己不懂的东西,这么扯,真的好吗? 首先,给一个基本的判断: 这个西瓜是正常的,根本不是防腐剂,也不是什么食品安全问题。 这只是风干现象,这个现象在丝瓜、葫芦、橙子等瓜果中都会出现。 这样西瓜就可以安安静静的做一个美男子,短时间内不用担心腐败变质的问题。 其次,西瓜皮表层坚韧,但实际上是可以呼吸的。 虽然表面有少量天然蜡质,但在呼吸的过程中西瓜的水分依然会流失。 我猜,这个西瓜应该是储存在阴凉或温度适中的地方,且通风良好,因此可以迅速脱水。 当水分挥发到一定的程度,病菌就算侵入也难以存活繁殖,也就不存在腐败的问题。 此外,从视频截图来看,西瓜皮比较厚,而且切的时候不好切,说明瓜皮致密且里面的纤维比较丰富。 这就让西瓜具备了一定的保持形状的能力,不会像橙子那样表面皱缩。 此外,这个西瓜的品种、成熟度也很重要,比如沙瓤西瓜更容易风干,成熟度高的西瓜糖分多,水分相对更少。 总而言之,这个西瓜只不过是在天时地利人和的条件下实现了不坏之身,跟食品安全、防腐剂什么的根本没关系。 如果你爹妈给你转发了这个小视频,你可以自豪的怼回去,“马未都?他不懂食品呀!”
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