Navigation Links
Dangerous chemicals in food wrappers likely migrating to humans: U of T study
Date:11/8/2010

University of Toronto scientists have found that chemicals used to line junk food wrappers and microwave popcorn bags are migrating into food and being ingested by people where they are contributing to chemical contamination observed in blood.

Perfluorinated carboxylic acids or PFCAs are the breakdown products of chemicals used to make non-stick and water- and stain-repellant products ranging from kitchen pans to clothing to food packaging. PFCAs, the best known of which is perfluorooctanoic acid (PFOA), are found in humans all around the world.

"We suspected that a major source of human PFCA exposure may be the consumption and metabolism of polyfluoroalkyl phosphate esters or PAPs," says Jessica D'eon, a graduate student in the University of Toronto's Department of Chemistry. "PAPs are applied as greaseproofing agents to paper food contact packaging such as fast food wrappers and microwave popcorn bags."

In the U of T study, rats were exposed to PAPs either orally or by injection and monitored for a three-week period to track the concentrations of the PAPs and PFCA metabolites, including PFOA, in their blood. Human exposure to PAPs had already been established by the scientists in a previous study. Researchers used the PAP concentrations previously observed in human blood together with the PAP and PFCA concentrations observed in the rats to calculate human PFOA exposure from PAP metabolism.

"We found the concentrations of PFOA from PAP metabolism to be significant and concluded that the metabolism of PAPs could be a major source of human exposure to PFOA, as well as other PFCAs," says Scott Mabury, the lead researcher and a professor in the Department of Chemistry at the University of Toronto.

"This discovery is important because we would like to control human chemical exposure, but this is only possible if we understand the source of this exposure. In addition, some try to locate the blame for human exposure on environmental contamination that resulted from past chemical use rather than the chemicals that are currently in production.

"In this study we clearly demonstrate that the current use of PAPs in food contact applications does result in human exposure to PFCAs, including PFOA. We cannot tell whether PAPs are the sole source of human PFOA exposure or even the most important, but we can say unequivocally that PAPs are a source and the evidence from this study suggests this could be significant."

Regulatory interest in human exposure to PAPs has been growing. Governments in Canada, the United States and Europe have signaled their intentions to begin extensive and longer-term monitoring programs for these chemicals. The results of this investigation provide valuable additional information to such regulatory bodies to inform policy regarding the use of PAPs in food contact applications.


'/>"/>

Contact: Kim Luke
kim.luke@utoronto.ca
416-978-4352
University of Toronto
Source:Eurekalert

Related medicine news :

1. Energy Drinks, Alcohol a Dangerous Mix
2. Snoring Man Sets Bed On Fire - Snorebond.com Relates Dangerous Stop Snoring Story
3. Predicted Red Tide Could Make Shellfish a Dangerous Dish
4. More Familiar Roads More Dangerous for Drivers
5. Varicose Veins May Put Some at Risk for Dangerous Blood Clots
6. Hope for Inherited, Dangerously High Cholesterol
7. Freezing, Medicating Away a Dangerous Irregular Heart Rhythm
8. "Teen Toxing”: Dangerous Trend Developing in UK Schools
9. Morgan and Morgan Provides Consumer Alert Center with Information about Dangerous Products
10. Teens dangerously uninformed about OTC medication
11. Dangerous lung worms found in people who eat raw crayfish
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/4/2016)... (PRWEB) , ... May 04, 2016 , ... ... has received a new patent for its innovative Secure Messaging platform, which includes ... control. The new patent extends Cirius’s portfolio of patents around innovative features ...
(Date:5/4/2016)... Charlotte, NC (PRWEB) , ... May 04, 2016 ... ... platform for sleep wellness and sleep disorder management, today announced it has secured ... World Innovation Lab (WiL) and existing investors. The investment will be used by ...
(Date:5/4/2016)... ... May 04, 2016 , ... IsoComforter, Inc., ... introduction of the innovative newly improved Iso-Hip Wrap. The newly designed hip ... design enhances comfort and enables the patient to enjoy the benefits of cold ...
(Date:5/4/2016)... ... May 04, 2016 , ... a2z, Inc. is pleased ... Canadian Association for Enterostomal Therapy (CAET) will be utilizing powerful and innovative technology ... attendees and exhibitors for the 2016 WOCN Society & CAET Joint Conference—which is ...
(Date:5/4/2016)... ... , ... Washington Wellness Center today announced its tenth anniversary of providing a ... out as an idea to provide a holistic approach to wellness has now become ... Dr. David Swanekamp, Chiropractic Physician , the wellness center offers a complete range ...
Breaking Medicine News(10 mins):
(Date:5/3/2016)... , May 3, 2016   Diplomat Pharmacy, Inc. (NYSE: DPLO) announced today that it is ... a video of two patients who tell their personal story and encourage those at risk ... Meet Jacque: Hepatitis C ... ... Diplomat Specialty Pharmacy (PRNewsFoto/Diplomat Pharmacy, Inc.) ...
(Date:5/3/2016)... May 3, 2016  Forté Elements, LLC (Forté) is excited to announce the launch ... address the nutritional needs of recovery for a variety of clinical conditions. Founded in ... Photo - http://photos.prnewswire.com/prnh/20160502/362548 Logo -  http://photos.prnewswire.com/prnh/20160502/362547LOGO ... ... ...
(Date:5/2/2016)... 2016  Deerfield announced today it led the ... Inc. Graybug Vision is an early stage pharmaceutical ... care for ocular diseases including wet age-related macular ... first developed at Johns Hopkins University and has ... Graybug Vision is developing ophthalmology products ...
Breaking Medicine Technology: