Skip to main content

Service Update

All Toronto Public Library branches are closed to support efforts to curb the spread of the COVID-19 virus. All programs and room rentals are cancelled. Information about checkouts, holds and library services

Why is sugar sweet?


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?

Recommended Reads