Scientists at Tel Aviv University showed that, far from causing bad breath, the coffee extract can inhibit the growth of bacteria in the mouth that cause halitosis.
"Everybody thinks that coffee causes bad breath, and often is true because coffee, which has a dehydrating effect in the mouth, when mixed with milk can ferment resulting in malodorous substances," explains microbiologist and co-author of Mel Rosenberg study. However, to the surprise itself Rosenberg, their latest experiments show that pure coffee extract may have exactly the opposite effect, inhibiting the growth of bacteria that produce halitosis.
After the discovery, Rosenberg has proposed creating new mouthwashes, chewing gum with purified extract of coffee to combat the source of bad breath rather than masking the smell as do the current menthol products.
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