'Chances are you can find fresh blackberries pretty easily in your local market. But black raspberries (Rubus occidentalis) are a different story. And they are worth seeking out.
All berries are good sources of antioxidants but black raspberries take top prize. According to Oregan State University Department of Food Science and Technology they contain almost three times the antioxidants of blackberries and more than six times the antioxidants of red raspberries.'