What is bioglan superfoods acai and berry powder acai berries are a fruit that originate in the rainforests of south america and have long been used by indigenous tribes of the region to boost energy and treat ailments acai contains both anthocyanins and flavonoids anthocyanins are responsible for the red and purple colours in many fruits foods that are richest in anthocyanins such as blueberries red grapes red wine and acai are very strongly coloured ranging from deep purple to black