英语听力文摘 English Digest 627、香菜：爱他还是恨他？

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　　On today’s Moment of Science, we’ll be sniffing¹ our way through a controversial culinary conundrum²: the great cilantro debate.

　　According to scientists working at the Monell Chemical Senses Center, the smell of cilantro usually produces a “love it” or “hate it” response.

       

　　Researching The Response

　　Researchers used gas chromatography to isolate³ the different components⁴ of the cilantro smell. They learned that its distinct aroma⁵ comes primarily from a group of molecules⁶ called aldehydes.

　　Aldehydes are one of the main by products of soap making. There are a few different aldehydes in the cilantro aroma “recipe. One emits the offensive soapy odor that makes you cringe. But, another produces the fresh, green, citrusy aroma that people like me find so appealing. Our ability to detect these different parts of the cilantro scent⁷ spectrum⁸ varies widely, and is linked to our genetics. Some people can’t smell the good part at all.

　　Future Research

　　We need more research to figure out the exact details, but the science of smells indicates that, when it comes to liking⁹ or hating cilantro, genetics matter. Thanks to our DNA¹⁰, we pick up on the good and bad parts of the cilantro sensory¹¹ experience in different ways.

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