A number of essential nutrients occur naturally in these fruits. The purple fruit is particularly high in vitamin A, vitamin E, iron and calcium. Eating fresh acai berries is the best way to reap their nutritional benefits. Unfortunately, these purple-colored fruits do not remain fresh for long, once they are separated from the tree. So, it is very difficult to find fresh acai berries outside the regions in which they are cultivated. That is why, acai berry is often found as dried fruit or in powdered form which is then used to make supplements, juices and blends.