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ERIC Number: ED556972
Record Type: Non-Journal
Publication Date: 2013
Pages: 54
Abstractor: As Provided
Reference Count: N/A
ISBN: 978-1-3039-5008-7
Consumer Exposure to Bisphenol A from Plastic Bottles
Bidabadi, Fatemeh
ProQuest LLC, Ph.D. Dissertation, Texas Southern University
Bisphenol A (BPA) is a plastic monomer and plasticizer and is a chemical that has one of the highest volume production worldwide, with more than six billion pounds each year. Its primary use is the production of polycarbonate plastics, epoxy resins used to line metal cans in a host of plastic consumer products such as toys, water pipes, drinking containers, eyeglass lenses, sports safety equipment as well as consumer electronics. Studies have shown that BPA is leached from lacquer coated cans and baby feeding bottles due to hydrolysis of the Polymer during thermal treatment. Studies have also shown that even under normal use BPA may leach from food and beverage containers. For many years Bisphenol A was treated as neutral to human health. The detection of BPA in drinking water and food products has raised the interest of many researches since 1990. Thousands of studies have examined the impact of BPA to determine its effects in laboratory animals. Numerous toxicological and biochemical studies have supported that BPA has estrogenic properties. The effects of exposure to BPA can be harmful to fetus, infants and young children. BPA is used in products where traces of it can be found in every human at higher levels of concentration than that which causes problems in animals. The National Institute for Environmental Health Sciences (NIEHS) has defined "low dose" of endocrine disrupting chemicals as doses below no observable adverse effect (NOAE) for specific chemicals. In BPA, this dose is 50 mg/kg of body weight per day. Today there are more than 150 published results describing how low doses of BPA effects animals. A recent study reported that adult female mice, monkeys, and humans metabolized BPA at almost identical rates. Since the level of BPA and other endocrine chemicals appears to be increasing throughout the World, especially where plastics are prevalent, it is extremely important to study the effects of this chemical on man and wildlife. This research effort addresses reported traces of BPA detected using different analytical techniques. In this study, the presence of BPA in different baby feeding bottles was determined. In general, the concentration of BPA released increased with increasing time of heating and longer use. The experimental results also showed that BPA is present in those plastic containers, even though labeled "BPA free". Research and studies done by scientists and other health organizations have agreed to measure BPA levels in human tissue, and determine its negative effects to human health. At this time the source and level of exposure to BPA is unknown. For this reason, much more research is needed to uncover more evidence of this toxic chemical. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page:]
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Publication Type: Dissertations/Theses - Doctoral Dissertations
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A