(American Chemical Society) Bananas are one of the world's most popular fruits. But how they're stored prior to reaching grocery shelves can adversely affect their flavor and smell. Now in a study appearing in ACS' Journal of Agricultural and Food Chemistry, scientists report that cold temperatures suppress the activity of proteins that play a key role in the formation of the banana's distinct aromas. They say this discovery could lead to enhancements of the fruit's fragrance and flavor.