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Stinky drinkies

作者:仉言魏    发布时间:2019-03-05 08:12:04    

By Adrian Cho BEER drinkers can raise a glass to the chemists who have finally worked out how their favourite tipple decomposes into smelly chemicals when exposed to light. The work could lead to better beers that last longer in bottles. Beer is made by fermenting malted barley and hops, but light quickly breaks down chemicals from the hops called isohumulones. The highly reactive fragments then combine with sulphur compounds to make a substance that chemists call “skunky thiol” because it is almost identical to the smelly secretion produced by North American skunks. Chemists have studied this process for decades,

 

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