Black and red raspberries are varieties from the same Rubus family so their nutritional contents, such as calories, proteins, fiber and vitamins, are the same. However, some components of black raspberries are completely different compared to the red variety — they have a 10-fold increase in anthocyanins, nearly double the amount of ellagic acid and three times the antioxidant power, measured by their oxygen radical absorption capacity (ORAC) — their ability to absorb free radicals. Read more.