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- Brazilian ACAI Berry destroys
cancer cells in lab,
UF study shows.
GAINESVILLE, Fla. — The
Brazilian ACAI Berry, popular in
health food contains antioxidants that destroyed cultured human
cancer cells in
a recent University of Florida study, one of the first to investigate the
fruit’s purported benefits.
Published in the 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 UF’s Institute of Food and
Agricultural Sciences.
“ACAI Berries are already considered one of the richest
fruit sources of antioxidants,” Talcott said. “This study was an important step
toward learning what people may gain from using beverages, dietary supplements,
or other products made with the berries.”
He cautioned that the study, funded by UF sources, was
not intended to show whether compounds found in ACAI Berries could prevent
leukemia in people.
“This was only a cell-culture model, and we don’t want
to give anyone false hope,” Talcott said. “We are encouraged by the findings,
however compounds that show good activity against
cancer cells in a model
system, are most likely to have beneficial effects in our bodies.”
Other fruits, including grapes, guavas and mangoes,
contain antioxidants shown to kill cancer cells in similar studies, he said.
Experts are uncertain how much effect antioxidants have on
cancer cells in the
human body, because factors such as nutrient absorption, metabolism, and the
influence of other biochemical processes, may influence the antioxidants’
chemical activity.
Another UF study, slated to conclude in 2006, will
investigate the effects of ACAI’s antioxidants on healthy human subjects,
Talcott said. The study will determine how well the compounds are absorbed into
the blood, and how they may affect blood pressure,
cholesterol levels, and
related health indicators. So far, only fundamental research has been done on
ACAI Berries, which contain at least 50 to 75 as-yet unidentified compounds.
“One reason so little is known about ACAI Berries, is
that they’re perishable and are traditionally used immediately after picking,”
he said. “Products made with processed ACAI Berries, have only been available for
about five years, so researchers in many parts of the world have had little, or
no opportunity to study them.”
Talcott said UF, is one of the first institutions
outside Brazil with personnel studying ACAI Berries. Besides Talcott, UF’s ACAI
research team, includes 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 post-doctoral 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
are
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 are still a good
recommendation for promoting optimal health.” Try
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