The Acai Palm is known about the Acai berry fruit health benefits, backed by scientific research into the fruits properties, is quite substantial. Acai is a rich source of anthocyanins and other phenolics and phyto-nutrients. Acai berries are amongst the most nutritious foods of the Amazon, rich in B vitamins, minerals, fiber, protein and omega-3 fatty acids. Acai also contains oleic acid (omega-9), a beneficial fatty acid (often mistakenly referred to as essential).