Acai Juice Powder Processing
The species is Euterpe oleracea Mart., a clump-forming palm of the family Arecaceae from the Amazon basin. The related Euterpe precatoria is a single-stemmed palm that is also harvested for acai, and the Atlantic forest palm Euterpe edulis is a different species. The fruit is a small dark purple drupe, mostly seed, with a thin layer of pulp and skin. The trade term acai juice therefore means a suspension prepared from that pulp and skin, and it is thicker and richer than the juice of a typical berry.
The raw material here is acai juice concentrate. It is mixed with maltodextrin and atomized in a spray dryer, and the carrier dries the viscous concentrate into a free-flowing powder, softens the astringency of the pulp and lightens the very dark color to purple red. The route differs from the freeze-dried form, which keeps the whole pulp, fat and fiber and has no carrier.
Acai fruit spoils quickly after harvest, so the pulp is separated from the large seed soon after picking and is concentrated before it is dried. How much water is used in pulping and how far the concentrate is reduced both change the final flavor, which is why one acai powder can taste thinner or deeper than another. Spray drying then fixes the flavor of the concentrate in a dry, portionable form, at the cost of the pulp fiber that the freeze-dried form retains.












