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Feb. 16 (Bloomberg) -- A rice-based ingredient that sometimes contains arsenic was found in infant formula, prompting researchers at Dartmouth College to say there is an "urgent need" for regulatory limits on the carcinogen in food.
Two of 17 infant formulas tested listed organic brown rice syrup, which may contain arsenic, as the primary ingredient, and one had a total arsenic concentration level of as much as six times the U.S. federal limit of 10 parts per billion for drinking water, according to a study published today in the journal Environmental Health Perspectives.
While arsenic has been recognized as a contaminant in drinking water, there are currently no federal thresholds for arsenic in juices or most foods. Legislation was introduced Feb. 8 in the U.S. House of Representatives calling on the Food and Drug Administration to establish standards for arsenic and lead in fruit juices.
"In the absence of regulations for levels of arsenic in food, I would certainly advise parents who are concerned about their children's exposure to arsenic not to feed them formula where brown rice syrup is the main ingredient," Brian Jackson, lead author of the study, said in a statement.
The study didn't name the infant formula brands it investigated.
Southern Rice
Nature's One Inc., a closely held manufacturer of baby foods, said in a statement on its website that its California- based supplier of organic brown rice syrup uses an independent lab to test arsenic levels. "Their testing results report undetectable amounts of arsenic at laboratory testing limits," it said. "Parents can rest assured that Nature's One will test arsenic levels for every lot" prior to production.
Rice is among plants that are efficient in taking arsenic from the soil, regardless of whether the resulting products are considered organic, the Dartmouth researchers said.
Most rice produced in the U.S. comes from Arkansas, Louisiana, Mississippi, Texas and Missouri, where the grain is grown on soil that was formerly treated with arsenical pesticides for cotton farming, according to a 2007 study by Andrew Meharg at the University of Aberdeen in Scotland. That study found that the arsenic level in rice grown in California was 41 percent lower than that from the south-central U.S.
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