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bisphenol a exposure greatest in bottle-fed infants, but below safety limits
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infants aged up to six months have the greatest exposure to bisphenol a (bpa) through polycarbonate bottles although levels are well below safety limits set by regulatory bodies, a new study has found. the researchers from switzerland added that the while the highest dose rate was “far below” the tolerable daily (tdi) intake of 50 µg/kg bw deemed safe, it was of “the same order of magnitude as recently reported concentrations that caused low-dose health effects in rodents”. more research into overall exposure through food packaging was also flagged up – with an evaluation on canned food being especially important to gauge adult exposure to the chemical, said author natalie von goetz, ph.d., senior scientist at the swiss federal institute of technology in zurich. the study, bisphenol a: how the most relevant exposure sources contribute to total consumer exposure , examined multiple sources of potential exposure across nine age/gender groups in swiss, german and austrian populations. it found that exposure to the chemical decreases as people become older, with highest exposure coming through canned foods. the research found the main exposure to bpa across all groups comes through food. "in general humans in their developmental stages (foetus, infant, child) seem to be exposed more severely than adults," said the research published in the journal risk analysis. the study examined 17 different sources so that an “overall risk assessment” could be based on the exposure from all relevant products and pathways – also known as the “total exposure”. the research found the most potentially exposed group is bottle-fed infants from 0-6 months of age. this group had estimated mean dose rates of nearly 0.8 micrograms per kilogram body weight per day, below the tdi of 50 µg/kg bw as set by both the european food safety authority (efsa) and the us food and drug administration (fda). bpa exposure through food packaging the group called for more research into exposure through food packaging as this constituted the greatest level of uncertainty with their evaluation - as the “ consumption of packaged food is highly variable throughout the population and will depend on socioeconomic as well as regional factors”. the study highlighted the need for greater investigation into bpa levels in food cans as this is “highly variable” and suggested that food processors standardise production practices to help cut adult exposure to the substance. “ by optimizing the production processes of cans, extreme high values such as those reported for canned soup and canned meat could possibly be avoided, which would reduce the high exposure dose rates of adults to the mean exposure dose rates presented,” said the researchers. bisphenol a: how the most relevant exposure sources contribute to total consumer exposure by natalie von goetz 1,matthias wormuth, martin scheringer, and konrad hungerbühler. doi 10.1111/j.1539-6924.2009.01345.x
Source :foodqualitynews.com
Date :
11
March
2010
Category :
Impression And Package Service
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the use of bisphenol a (bpa) in can linings is both safe and vital for food protection, a host of industry bodies and companies have said in rejecting the conclusions of a report calling for a ban on the chemical. the north american metal packaging alliance (nampa), the american chemistry council (acc), as well as food giants such as del monte, campbell and general mills have dismissed a study by the us-based consumer union that claimed potentially hazardous levels of bpa were leaching into foods from the epoxy linings of cans.
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in its final evaluation of the chemical bisphenol a (bpa), the us national toxicology program (ntp) has expressed concerns for potential exposures to foetus, infants and children. the main conclusions of the ntp report include expression of ‘some concern’ over the potential for developmental toxicity for foetuses, infants, and children, based primarily on evidence from animal studies that would suggest that there might be effects on prostate gland and brain development, with also the potential for behavioural effects.
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the north american metal packaging alliance (nampa) has condemned reports that it was involved in a top level meeting to revamp the image of bisphenol a (bpa) by using a pregnant woman to talk about the benefits of the substance. the us industry association was responding to an article in the milwaukee journal sentinel which claimed nampa attended a summit with executives and lobbyists at an exclusive club in washington dc last week to discuss a strategy to present their case for the continued use of the chemical, which has already been banned from baby bottles in canada and parts of the us.
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while european and us risk assessors play down safety concerns over using food sourced from cloned animals, the fledgling industry appears set for tougher times in convincing manufacturers, according to a new survey. according to anti-gm consumer group the center for food safety, 20 leading us-based food processors including kraft foods and smithfield foods are reported to have pledged not to use products sourced from cloned animals.
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the uk consumers\' association sought to \"name and shame\" food manufacturers who use misleading labelling this week when it revealed details of food products which are confusing consumers. the \"shamed\" products included mcvitie\'s butter puffs, containing no butter, and princes crab paste, which contains nearly 40 per cent mackerel, 20 per cent cod, and only 11 per cent crab. the association called on manufacturers to make their labels \"honest and clear\", and challenged the food standards authority \"to expose bad practice\".
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