Buying products, pay attention to the packaging


11/11/2010

Researchers at the University of Toronto recently found that the chemicals used to process glass and metal packaging for the food and bags for popcorn in the microwave, can enter the human body through food and contribute to chemical contamination of blood.

Perfluorinated carboxylic acids (rerfluorinated carboxylic) or PFCA - breakdown products of chemicals used for the manufacture of unbreakable, waterproof and stain-resistant products ranging from kitchen utensils, clothes to food packaging. Acid PFCA, the most famous of which is perfluorooctanoic (perfluorooctanoic) acid (PFOA), are found in humans worldwide.

"We suspected that the main reason for having PFCA in the human body can be addicting and metabolism poliftoralkilovyh phosphate esters (polyfluoroalkyl phosphate esters) or PAP" - Deon says Jessica (Jessica D’eon), graduate student of the Department of Chemistry at the University of Toronto. "Acids PAP used to make anti-grease properties of paper packaging used for fast foods, and bags for popcorn in the microwave."

In an experiment conducted by scientists, the rats were put acid PAP, and then for a three-week period was traced PAP concentration of acids and metabolites PFCA, including acid PFOA in the blood of animals. Exposure of the human body acids PAP has already been established by scientists in the preceding analysis. The researchers used a concentration of PAP, seen before in human blood together with the PAP and PFCA concentrations observed in the rats, to calculate the percentage of exposure to PFOA acids the human body by metabolism of PAP.

"We found that the concentration of acid PFOA from PAP metabolism was significant and decided that it was acid metabolism PAP could be a major source of PFOA acids in the human body" - said Maberi Scott (Scott Mabury), leader of the study and professor of the Department of Chemistry at the University of Toronto .

"This discovery is very important because we want to control the exposure of the human body’s chemical exposure, but this is only possible if we understand the source of exposure. Moreover, some attribute this to contamination of the environment by chemicals, not paying attention to how many of these substances currently used in production.

"In this analysis, we clearly demonstrate that the use of PAP acids in the production of food products can cause chemical contamination of human blood."

The interest of the authorities to this issue has increased greatly. Government of Canada, the United States and Europe have announced their intentions to begin extensive and long-term testing programs for these chemicals. The results of this study provide valuable additional information for persons authorized to report to the relevant authorities on the use of PAP acids in the production of goods for food purposes.

The study was published in the November 8 edition of Environmental Health Perspectives. The study was funded by the Natural Sciences and Engineering Council of Research Design in Canada.


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