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SSS 2012-03-28

时间:2012-04-16 06:37来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

 This is Scientific Americans 60 Second Science, I am Cynthia Graber, this will just take a minute. 

 
Compounds found in the herb thyme have antibiotic1 properties. Now scientists have demonstrated that thyme might have a future role in fighting acne.
 
A number of factors cause acne, but the primary agents are bacteria called Propionibacterium acnes, or PA. Topical treatments containing benzoyl peroxide are commonly used to kill the bacteria. But they can irritate the skin.
 
To test other options, researchers steeped thyme, marigold and myrrh in alcohol to extract the plants active compounds. They tested the resulting tinctures on the PA bacteria. All three herbs killed more of the bacteria than an alcohol control. Thyme was the most effective of all. And thyme was also significantly more effective than the highest prescribed concentration of benzoyl peroxide. The research was presented at a conference of the Society for General Microbiology in Dublin.
 
The scientists say more research should be done to understand how the tinctures work on the molecular2 level, and to test them on actual skin environments.
 
Cooks already pass the thyme to add flavor to food. But acne sufferers could someday see thyme fly—into their medicine cabinets.
 
Thanks for the minute, for Scientific American, I am Cynthia Graber

点击收听单词发音收听单词发音  

1 antibiotic KNJzd     
adj.抗菌的;n.抗生素
参考例句:
  • The doctor said that I should take some antibiotic.医生说我应该服些用抗生素。
  • Antibiotic can be used against infection.抗菌素可以用来防止感染。
2 molecular mE9xh     
adj.分子的;克分子的
参考例句:
  • The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
  • For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时,分子的碰撞就停止了。
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