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科学美国人60秒:甜味剂抑制害虫-托福听力下载

2017-01-03 10:58:00来源:科学美国人60秒

点击查看>>科学美国人60秒音频:甜味剂抑制害虫

  科学美国人60秒中英文翻译:甜味剂抑制害虫

  科学美国人60秒英文文本

  You can catch more flies with honey than with vinegar.

  But if you want to kill them, you might try Truvia.

  Because a new study shows that the active ingredient in this popular sweetener can act as an insecticide.

  The study began as a sixth-grade science-fair project.

  Eleven-year-old Simon Kaschock-Marenda noticed that his parents had stopped using sugar.

  So he decided to see how different sweeteners affect the health of fruit flies.

  甜味剂.jpg

  He and his dad, a card-carrying biologist, offered the flies food spiked with a variety of no-cal sweeteners.

  Six days into the experiment all the Truvia-fed flies were dead, while those stuck with Sweet-n-low, Splenda or Equal lived five to seven weeks.

  Why Truvia makes flies drop like flies is still a mystery.

  Back in the lab, the researchers confirmed that the bugs weren't starving: they all continued to eat.

  Most actually seemed to prefer Truvia to real sugar when offered a choice, findings published in the journal PLOS One.

  Next, the researchers will see if the sweetener kills other bugs, like cockroaches or ants.

  Until then, try tossing a little Truvia in your coffee, and on the counter.

  中文翻译请点击下一页

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