GAINESVILLE, Fla. — A Brazilian berry popular in health food contains antioxidants that destroyed cultured human cancer cells in a recent Journal of Agricultural and Food Chemistry, the study showed extracts from acai (ah-SAH’-ee) berries triggered a self-destruct response in up to 86 percent of leukemia cells tested, said Stephen Talcott, an assistant professor with Susan Percival, a professor with the food science and human nutrition department, David Del Pozo-Insfran, a doctoral student with the department and Susanne Mertens-Talcott, a postdoctoral associate with the pharmaceutics department of UF’s College of Pharmacy.
Acai berries are produced by a palm tree known scientifically as Euterpe oleracea, common in floodplain areas of the Amazon River, Talcott said. When ripe, the berries are dark purple and about the size of a blueberry. They contain a thin layer of edible pulp surrounding a large seed.
Historically, Brazilians have used acai berries to treat digestive disorders and skin conditions, he said. Current marketing efforts by retail merchants and Internet businesses suggest acai products can help consumers lose weight, lower cholesterol and gain energy.
“A lot of claims are being made, but most of them haven’t been tested scientifically,” Talcott said. “We are just beginning to understand the complexity of the acai berry and its health-promoting effects.”
In the current UF study, six different chemical extracts were made from acai fruit pulp, and each extract was prepared in seven concentrations.
Four of the extracts were shown to kill significant numbers of leukemia cells when applied for 24 hours. Depending on the extract and concentration, anywhere from about 35 percent to 86 percent of the cells died.
The UF study demonstrates that research on foods not commonly consumed in the United States is important, because it may lead to unexpected discoveries, said Joshua Bomser, an assistant professor of molecular nutrition and functional foods at The Ohio State University in Columbus, Ohio.
But familiar produce items have plenty of health-giving qualities, he said.
“Increased consumption of fruits and vegetables is associated with decreased risk for many diseases, including heart disease and cancer,” said Bomser, who researches the effects of diet on chronic diseases. “Getting at least five servings a day of these items is still a good recommendation for promoting optimal health.”
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