食品伙伴網(wǎng)報道，據(jù)美國食品安全網(wǎng)8月5日消息，密西西比大學(xué)受美國環(huán)保組織環(huán)境工作組（EWG）的委托而進行的新的實驗室檢測結(jié)果表明，40%的來自各大知名商業(yè)機構(gòu)的收據(jù)小票上有高濃度的雙酚A存在。其中包括：麥當勞的銷售點、CVS超市、KFC、美國全食（Whole Foods）超市、沃爾瑪超市、喜互惠（Safeway）超市以及美國郵政。而來自塔吉特（Target）超市、星巴克、以及其他重要企業(yè)的收據(jù)小票上的沒有或者只含微量的雙酚A。
不過EWG也指出，即使是同一家連鎖企業(yè)，不同分店的收據(jù)含雙酚A量也有很大差別。例如馬里蘭州一家肯德基收據(jù)雙酚A含量高達10.62毫克，但在艾奧瓦另一家分店的收據(jù)只含0.0001毫克。報告指出，這是由于分店使用不同的感熱紙，部分生產(chǎn)商致力制造不含雙酚A的感熱紙。
在本次測試中收據(jù)小票上的雙酚A為我們最近討論的來自罐頭食品、奶瓶和嬰兒奶粉的250-1000倍。環(huán)境工作組認為這些數(shù)據(jù)不代表決策者們所關(guān)注的焦點應(yīng)該從食品中的雙酚A轉(zhuǎn)移到收據(jù)小票上，如果零售商們不使用含有BPA的熱敏紙就可以了。
據(jù)悉，7月11日由瑞士蘇黎世的科學(xué)家發(fā)表的研究結(jié)果表明，BPA很容易從收據(jù)上轉(zhuǎn)移到皮膚上，并且很容易被皮膚吸收。該研究提出了BPA這種化學(xué)品很可能直接透過皮膚而進入血液。
環(huán)境工作組已與位于威斯康興州的美國最大的熱敏紙生產(chǎn)商取得聯(lián)系，他們所生產(chǎn)的熱敏紙上存在BPA，該小組要求他們?yōu)榱怂麄児蛦T和消費者的健康利益，不再生產(chǎn)含有BPA的熱敏紙。
食品伙伴網(wǎng)編者注：雙酚A是世界上使用最廣泛的工業(yè)化合物之一，主要用作生產(chǎn)聚碳酸酯塑料和環(huán)氧樹脂。雙酚A在生活中應(yīng)用廣泛，是人們經(jīng)常能接觸到的物質(zhì)。資料表明，雙酚A屬低毒性化學(xué)物。動物試驗發(fā)現(xiàn)雙酚A有模擬雌激素的效果，即使很低的劑量也能使動物產(chǎn)生雌性早熟、精子數(shù)下降、前列腺增長等作用。此外，有資料顯示雙酚A 具有一定的胚胎毒性和致畸性，可明顯增加動物卵巢癌、前列腺癌、白血病等癌癥的發(fā)生。有研究表明雙酚A并不是人類致癌危險因素。目前，雖然一些研究結(jié)果提示，塑料奶瓶等塑料制品中的雙酚A可能會影響嬰幼兒的成長發(fā)育，并對兒童大腦和性器官造成損傷，但是迄今未有充足證據(jù)證明嬰兒或者兒童因攝取PC奶瓶釋放的雙酚A成分而受到傷害。
本報道由食品伙伴網(wǎng)編譯整理，僅供食品行業(yè)相關(guān)人士參考，詳細內(nèi)容以國外原文報道為準。
原文地址：http://www.foodsafetynews.com/2010/08/according-to-new-laboratory-tests/
原文報道：
High Levels of BPA on Receipts
by Alexa Nemeth | Aug 05, 2010
According to new laboratory tests commissioned by the Environmental Working Group (EWG), high levels of BPA have been found on 40 percent of receipts sampled from major businesses including outlets of McDonald's, CVS, KFC, Whole Foods, WalMart, Safeway and the U.S. Postal Service. Receipts from Target, Starbucks, Bank of America ATMs and other important enterprises were BPA-free or contained only trace amounts.
Bisphenol A (BPA) is a chemical building block that is used primarily to make polycarbonate plastic and epoxy resins. Polycarbonate plastic is a lightweight, high-performance plastic that possesses a unique balance of toughness, optical clarity, high heat resistance, and excellent electrical resistance. Because of these attributes, polycarbonate is used in a wide variety of common products including digital media (e.g., CDs, DVDs), electrical and electronic equipment, automobiles, sports safety equipment, reusable food and drink containers, and many other products.
The amounts of BPA on the tested receipts were 250 to 1,000 times greater than more commonly discussed sources of BPA such as canned foods, baby bottles, and infant formula.
The Environmental Working Group does not believe these data should be interpreted to suggest that policymakers shift their focus from BPA contamination of food, which is widespread, to receipts. The group asserts, however, this route of exposure is easy to fix since many retailers do not use BPA-laden thermal paper.
The Environmental Working Group collected receipts from different businesses in 7 states and the District of Columbia and had them tested by the University of Missouri Division of Biological Sciences.
The lab conducted wipe tests in which BPA was easily removed, indicating that the chemical could rub off on the hands of the person handling the receipt.
A study published July 11 by scientists with the Official Food Control Authority of the Canton of Zurich in Switzerland found that BPA transfers readily from receipts to skin and can be absorbed into the skin to the point that it cannot be washed off. According to the study, this raises the possibility that the chemical infiltrates the skin's lower layers to enter the bloodstream directly.
According to an Environmental Working Group analysis of biomonitoring data from the federal Centers for Disease Control and Prevention (CDC), retail workers carry an average of 30 percent more BPA in their bodies than other adults. According to the U.S. Department of Labor's Bureau of Labor Statistics, as of May 2009, 1 in 17 Americans were either retail salespersons or cashiers.
"A typical employee at any large retailer who runs the register could handle hundreds of the contaminated receipts in a single day at work," said Jane Houlihan, Environmental Working Group Senior Vice-President for Research. "While we do not know exactly what this means for people's health, it's just one more path of exposure to this chemical that seems to bombard every single person."
Appleton Papers Inc. of Appleton, Wisconsin is the nation's largest thermal paper maker; it removed BPA from its products in 2006.
Environmental Working Group president Ken Cook has written to several of the companies whose receipts tested positive for BPA. He is requesting that they change to BPA-free paper in the interest of their employees' and customers' health.
