The acai berry or açaí berry, pronounced Ah-Sigh-EE, is the fruit of the acai palm tree called Euterpe oleracea. This berry contains a large amount of powerful antioxidants as well as many nutrients.

The acai berry is a small, almost rounded, deep purple fruit. The color of the acai berry can vary from deep purple or black to brownish. The diameter of an acai berry is about an inch (25 mm) or less. Inside the acai berry, there is one large seed measured 0.25 to 0.5 inches.

One of the major benefits of the acai berry is the large number of antioxidants that the berry contains. These acai antioxidants are much more powerful than those found in other fruits and vegetables.

The acai berry is said to contain more than 30 times the amount of anthocyanins contained in red wine. The acai berry contains two major types of anthocyanins; cyanidin-3-glucoside and caninidin-3-rutinoside.

The acai berry contains at least sixteen types of polyphenolic compounds.

Beta carotene is a free radical scavenger also found in the acai berry, along with vitamin C, vitamin E and magnesium.