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Study Highlights High Antioxidant Content in Dark Chocolate and Cocoa Powder

Feb. 7, 2011 -- Giving your sweetie chocolate for Valentine's Day may show you care for their health as well as their heart.

A new study suggests that dark chocolate and cocoa powder may be the next "super foods" thanks to their high antioxidant content.

Researchers found the antioxidant activity of dark chocolate and cocoa powder was equivalent to or higher than that found in some other so-called “super fruit" powders or juices, including acai berry, blueberry, cranberry, and pomegranate.

Antioxidants are a group of compounds known to fight the damaging effects of oxidative stress on cells within the body and are increasingly thought to have many heart-healthy properties.

Two groups of antioxidants in particular, polyphenols and flavonols, which are found in various fruits and seeds, have been the focus of much research due to their potentially healthy effects. Foods and fruits high in these antioxidants have been dubbed as "super foods" or "super fruits" by the media.

"These substances help keep the arteries healthy and are protective against cardiovascular disease," says preventive cardiologist Suzanne Steinbaum, MD, of Lenox Hill Hospital in New York City, in an email. "When looking for a sweet snack, a square of dark chocolate might, in fact, be your healthiest choice!"

Cocoa or cacao beans are not beans but the seeds of the fruit of the Theobroma cacao tree. The seeds are dried and then processed to produce cocoa powder. Dark chocolate generally has a higher percentage of cocoa content than milk chocolate.

Comparing Cocoa's Antioxidant Content

In the study, which was conducted by Hershey Company and published in Chemistry Central Journal, researchers compared the total flavonol and polyphenol content as well as antioxidant activity content of cocoa powder and dark chocolate vs. super fruits, including acai, blueberry, cranberry, and pomegranate.

The antioxidant activity of cocoa powder was higher than all other super fruit powders analyzed.

They also found the total flavonol content of cocoa powder (30.1 milligrams per gram) was higher than all other super fruit powders tested, which averaged less than 10 milligrams per gram.

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