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Why is sugar sweet?

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This week a TPL Kids website visitor is wondering why sugar is sweet. 

 

An article in Nature: International Journal of Science, highlighted research conducted at the Roma Tre University in Rome. It found that fructose, glucose and mannose each formed hydrogen bonds of different lengths. Sweeter-tasting sugars formed tighter, stronger bonds. The strength of the molecules’ hydrogen bonds may be the primary factor in determining a sugar’s level of sweetness.

 

That’s a pretty sweet answer, no?

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