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Electricity Supercharges Antioxidant And Polyphenol Content Of Sweet Potatoes

August 20, 2012: 12:00 AM EST
Japanese researchers report that sending an electrical charge through an average sweet potato can greatly boost its nutritional value. Supercharging the sweet potato, which is already considered one of the most nutritious of vegetables and a global dietary staple for millennia, offers a way to further increase the role of the vegetable in “relieving hunger and improving nutrition and health,” the researchers said. The study found that passing 0.2 amps of current through a salt solution containing sweet potatoes increased antioxidant activity by 1.4 times and total polyphenol content by 1.6 times.
Kazunori Hironaka et al., "Electrifying success in raising antioxidant levels in sweet potatoes", News release, presentation at the National Meeting of the American Chemical Society, August 20, 2012, © American Chemical Society
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