咖啡机养细菌
Espresso Machines Brew a Microbiome of Their Own
咖啡机养细菌
Researchers sampled ten espresso machines and found that most of them harbored coffee residues rich in bacteria—including some potentially pathogenic strains. Christopher Intagliata reports
研究人员取样分析了10种咖啡机。他们发现大部分咖啡机的咖啡残留物里有很多细菌，包括了有致病可能性的菌株。
撰文/播音 克里斯托弗·因塔利亚塔（Christopher Intagliata）
翻译M
审核 邰伦玥
What's the liveliest part of your kitchen, in terms of harboring bacteria? Is it the cutting board?The dish sponge?Or maybe… your coffeemaker? Because even though caffeine has antibacterial effects, it turns out espresso machines can harbor a whole menagerie of bacteria—including some pathogenic species more commonly associated with the toilet.
在你的厨房中，哪个角落最富有生机？我是说，在培养细菌那个方面。砧板？百洁布？或者…你的咖啡机？尽管咖啡因有抗菌作用，你的咖啡机仍然是一个细菌大观园——这其中包括了一些更常与厕所联系在一起的致病菌种。
Researchers sampled ten Nespresso brand espresso machines, [nespresso brew sound], zeroing in on the drip trays, which catch those last drops of brown gold after a brew. They found that nine of the ten machines harbored residues rich inEnterococcus bacteria, a typical marker of human fecal contamination. And another common resident was Pseudomonas—which has both benign and pathogenic strains.Pseudomonas appears to thrive in the presence of caffeine, and break it down. Which suggests the bugs might be put to work decaffeinating coffee, or cleaning caffeine residues from our waterways. The findings appear in the journal Scientific Reports. [Cristina Vilanova, Alba Iglesias & Manuel Porcar, The coffee-machine bacteriome: biodiversity and colonisation of the wasted coffee tray leach]
研究人员抽样研究了10中雀巢的咖啡机，【咖啡机的烹制声】集中分析了集液盘，也就是每次烹制后接获最后几滴醇酿的地方。他们发现10个样本中的9个都含有很多肠球菌的残留物。肠球菌是人类排泄物的主要标志之一。另一种常见的“菌民”是假单胞菌，它包含了良性的与致病的菌株。在咖啡因中，它们分解咖啡因并茁壮成长。这个现象说明，细菌可能是用于分解咖啡中的咖啡因，或是清除下水道的咖啡因残留物。这项发现发表在《科学报告》上。
As for your next espresso shot? Don't worry too much. The researchers did not find any bacteria in the coffee pods themselves—so they say our fingertips might be to blame for spreading the single-celled invaders. And they write that it's "absolutely not the case" that Nespresso machines are dangerous for human health. Just wash the drip tray regularly with soap and water, as you would any other food-contaminated surface. So that the only thing brewing in your espresso machine… is your coffee.
至于下一杯浓缩咖啡会不会有病菌？别担心太多。这项研究并没有发现咖啡壶中有细菌——因此研究人员认为我们的手指才是这些单细胞入侵者的帮凶。并且他们写到，这项研究“绝对没有表明”雀巢咖啡机会危害健康。只需定期地用肥皂和水清洁你的咖啡机集液盘，就像平常清洁其他被食物弄脏的东西一样，就可以保证在你的咖啡机中酿制的，只是你的咖啡，而不是病菌。
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京ICP备11000850号-1
京公网安备11010502039775号 信息网络传播视听节目许可证0111611号
国家科技基础条件平台