A recent investigation revealed this 90% of purchase or receipt tickets, in which the ink is erased with the passage of time, are made with thermal paper and containing bisphenol-A (BPA), described in the present paper as a potential cause of serious illness. But do not panic. According to other academics, the sum would be "insignificant".
Dr. Brent A. Bauer from the Mayo Clinic in the United States explained in a report that bisphenol A is industrial chemicals which, since the 1960s, has been used to produce plastic containers (disposable bottles) and resins. "Epoxy" resins are used to cover inside of metal products, such as cans, glass caps and water pipes. Some sealants and dental compounds also contain bisphenol A.
Several studies have shown that bisphenol A in packs – can penetrate food or drink. Exposure to bisphenol A is a concern due to possible effects that may occur in the brain, the behavior and prostate of fetuses, children and children. There are other studies suggesting a possible link between bisphenol A and high blood pressure, cancer and infertility. However, the Food and Drug Administration of the United States has assured that very low levels of bisphenol A which are present in some foods are "Innocent ".
In the new BPA study, the University of Granada (UGR) led the Granada Institute of Biosanitary Research (ibs.GRANADA), the San Cecilio University Hospital in Granada, the Université Paris Descartes, the Necker Enfants Malades Hospital in Paris France) and the National Public Health School of Rio de Janeiro (Brazil) have advanced on the presence of this substance in tickets: "We can recognize this type of paper because if we approach a heat source, for example a match, it blackens Immediately, "explains UGR Medicine Professor Nicolás Olea, who together with José Manuel Molina are the main authors of the paper.
In this article, published in the magazine Environmental research. The researchers analyzed the presence of both BPA and bisphenol-S (BPS) in tickets or thermal receipts as well as the hormonal activity of extracts from these materials.
The point of view of the scientists in Granada
More from 90% of revenues collected in Brazil and Spain have BPA and the biological activity of "antiandrogenic hormonal character" is present in all those containing BPA. "There is another example that surveillance systems reveal something about the toxicity of chemical compounds in our environment. It would seem that regulatory measures a posteriori, when human exposure is already evident, "warns Nicola Olea.
"For example, we should not mix these receipts with food in the kitchen when you unpack your purchase, fish or meat. We do not even have to play with them, nor do we get them to throw them, write notes or keep them in the car, in a bag or in a bag, "says Olea."We must, in short, manipulate as little as possible this kind of tickets".
The divergent views: the "insignificant" amount of BPA
In view of this announcement, several authorities in the field have already emerged globally to explain that the concentration of this substance in purchasing receipts is "too low ".
Several studies have been conducted that analyze the amount of BPA transferred through a person's skin, depending on factors such as ticketing time or hand humidity. Although this amount varies when each of these parameters is changed, it is generally concluded that the transferred dose is basically "insignificant".