Superfoods: tropical blueberries pip commercial varieties
Blueberries are one of the best-known ‘superfoods’, with a high level of antioxidant chemicals. But are all blueberries equal? New research suggests that some of the less well known cousins of the commercial blueberry may be even better at scavenging free-radicals.
The first analysis of the healthful antioxidant content of blueberries that grow wild in Mexico, Central and South America concludes that some of these fruits have even more healthful antioxidants than the blueberries — already renowned as “super fruits” — sold throughout the United States. These extreme super fruits could provide even more protection against heart disease, cancer and other conditions, the report suggests.
Edward Kennelly and colleagues note that although there are over 600 species of blueberries and blueberry-like fruits growing in Mexico, Central and South America (the so-called “neotropics”), very little research has been done on them. U.S.-grown blueberries are already famous for their antioxidants, which help the body get rid of harmful free radicals. So, the researchers decided to find out how neotropical blueberries stacked up against a grocery-store variety.
They found that two types of neotropical blueberries, Cavendishia grandifolia and Anthopterus wardii, were extreme super fruits — they had significantly more antioxidants than a type of blueberry commonly sold in U.S. supermarkets stores. The researchers say that these neotropical blueberries “have the potential to be even more highly promising edible fruits.”
The study appears in the American Chemical Society’s Journal of Agricultural and Food Chemistry. The authors acknowledge funding from the U.S. National Institutes of Health.