Acai | Description, Fruit, Berry, Uses, Products, & Nutrition (2024)

plant and fruit

verifiedCite

While every effort has been made to follow citation style rules, there may be some discrepancies.Please refer to the appropriate style manual or other sources if you have any questions.

Select Citation Style

Feedback

Thank you for your feedback

Our editors will review what you’ve submitted and determine whether to revise the article.

External Websites

Physical description

Acai palms consist of 4–8 slender gray-brown stems, each of which is about 25 metres (82 feet) tall and generally no greater than 20 cm (about 8 inches) in diameter. The stems bear ringlike leaf scars and are topped with a crown of 9–15 compound leaves; the leaves measure about 1.2–4 metres (4–13 feet) long. The small brown-purple flowers are either staminate (male) or pistillate (female) and are borne on large branching inflorescences that hang from the tops of the stems. The flowers are pollinated by small bees and flies and produce round drupes known as acai berries. The fruits are about 1.5 cm (0.6 inch) in diameter and feature a single large seed. They usually ripen from green to a deep purple, though the fruit of some populations remains green at maturity. Each acai stem can produce up to eight bunches of fruit a year, each bunch weighing up to 6 kg (13 pounds).

Britannica QuizWhat’s on the Menu? Vocabulary Quiz

Uses

Fruit and nutrition

Acai fruits have a high fat content and thus are highly perishable, usually lasting only about a day after being picked. Local peoples use the pulp of the fresh fruit in a variety of sweets and beverages, including wine, and the juice is commonly mixed with tapioca. For export, the fruit pulp is usually dried and powdered as a dietary supplement, or it is flash frozen for smoothies and juices. Acai is high in antioxidants and a number of phytochemicals, though most of the health claims about the fruit—including its value as a weight loss aid—have not been substantiated.

Palm hearts

Acai and other members of the genus Euterpe are important commercial sources of palm hearts, also known as hearts of palm, which are eaten as a vegetable. Palm hearts are harvested by removing the growing top of the palm crown; each heart consists of a whitish cylinder of tender immature leaves. Given that acai palms are multistemmed, the harvest can be done without killing the entire plant and thus is considered more sustainable than collection from single-stemmed species.

Other uses

In addition to its commercial importance, acai is also used as a medicinal plant by indigenous and local peoples, and the leaves and stems are useful for thatch and building materials.

Labour issues

Acai is difficult to cultivate, and the majority of fruit and palm heart production comes from wild plants in rural, often labyrinthine estuaries. Given that the palms are so tall and slender, the fruit is frequently harvested by children, who can ascend the plants without breaking them. Despite the risk of deadly or life-altering falls and injuries such as knife wounds or bites from venomous snakes or spiders, researchers in Brazil have noted that the use of child labour is widespread among the impoverished families who work the time-sensitive harvest. Although some acai fruit is certified fair trade, critics of the certification process say that it has done little to eradicate child labour from the industry.

Special 67% offer for students! Finish the semester strong with Britannica.

Learn More

Melissa Petruzzello