【英语时差8,16】蜂蜜和蛀牙
时间：2016-01-25 06:45:27
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（单词翻译）
Honey from Brazilian honeybees might help prevent cavities? In this Moment of Science Don tells Yael about that possibility.
D: Well, see you later, Yael. I'm on my way to Brazil.
Y: I didn't know you were going to Brazil, Don. What's the occasion?
D: Honeybees.
Y: Honeybees?
D: Honeybees make a substance called propolis that researchers have good reason to believe will prevent
plaque1 from building up on our teeth, as well as possibly preventing cavities. They've tested it on rats since they form cavities the same way that humans do, and the results were that the cavity rate in these rats was cut by about 60%. On top of that, the propolis nearly halted the activity of key
enzymes2 in forming dental plaque.
Y: I thought you said all honeybees make propolis, so why do you need to go to Brazil?
D: Because not all propolis is alike. Honeybees make propolis by collecting the secretions of trees and other plants where they live; thus the make-up of propolis varies depending on the plant life around. Researchers have found the propolis of Brazilian honeybees to be particularly
potent4 when it comes to protecting teeth. Brazilian honeybee propolis contains two key compounds, one of which is the best plaque inhibitor scientists have ever seen. It is especially effective in blocking the plaque action of the most common pathogen in our mouths, Streptococcus mutans. It also blocks a particular
enzyme3 that no other compound is known to
inhibit5. Even though it has not yet been proven to be effective in humans, propolis seems to be pretty amazing stuff.
Y: So what are you going to do-get yourself stung to bits trying to get some of this stuff to rub onto your teeth?
D: Not at all. I'm going to take a bee taming class while I'm there.
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