目前塑料包裝方興未艾，塑料瓶裝礦泉水更是琳瑯滿目，如果你認(rèn)為瓶裝礦泉水是干凈的話，那么現(xiàn)在就該重新考慮了。據(jù)德**德大學(xué)的水中生態(tài)毒物學(xué)系的馬丁·瓦格勒和喬格·奧爾曼研究發(fā)現(xiàn)，塑料瓶裝飲用水含有雌**化學(xué)成分，不利健康。
科學(xué)家通過分析市場上正在銷售的礦泉水，發(fā)現(xiàn)有雌**化學(xué)成分從塑料包裝中滲透到飲用水中。而且，這些化學(xué)成分在活的生物體內(nèi)確實能發(fā)揮作用，能加快新西蘭田螺晶胚的發(fā)育。
此發(fā)現(xiàn)**證實從塑料包裝中滲透出來的化學(xué)成分具有雌**的實際功能。此研究發(fā)現(xiàn)發(fā)表在世界**大學(xué)術(shù)出版巨頭Springe*新出版的《環(huán)境科學(xué)與污染研究》（Environmental Science and Pollution Research）雜志上。
為了查明包裝材料中的化學(xué)成分是否滲透到了食品中，科學(xué)家檢測了德國在售的20個品牌的礦泉水，其中9種為玻璃瓶裝的，9種是塑料瓶裝的，另外二種為紙和塑料膜的復(fù)合材料包裝的?？茖W(xué)家從這些產(chǎn)品中抽取水樣品，之后用這些樣品水做新西蘭田螺的繁育實驗，以確定此外源雌**的來源和功能，結(jié)果發(fā)現(xiàn)有60%的樣品包含有雌**化學(xué)成分，其中33%的玻璃瓶裝水包含有雌**，而包含有雌**的塑料瓶裝水則高達(dá)78%。而且，玻璃瓶裝水所含雌**成分比塑料瓶裝水少。此外，二種復(fù)合包裝的飲用水品牌也都含有相當(dāng)多的雌**成分。
通過新西蘭田螺繁育實驗，科學(xué)家發(fā)現(xiàn)放在塑料瓶中繁育的田螺數(shù)量是玻璃瓶中的二倍。這些結(jié)果證明礦泉水中所含的人工合成的雌**污染來自塑料包裝所滲透的化學(xué)物質(zhì)。（創(chuàng)賽新聞中心canspecsci.com）
推薦原始出處：
Environmental Science and Pollution Research，doi:10.1007/s11356-009-0107-7，Martin Wagner，J?rg Oehlmann
Endocrine disruptors in bottled mineralwater: total estrogenic burden and migration from plasticbottles
Martin Wagner1 and J?rg Oehlmann1
(1)Department of Aquatic Ecotoxicology, Johann Wolfgang GoetheUniversity, Siesmayerstr. 70 A, 60054 Frankfurt am Main, Germany
Abstract
Background, aim, and scope Food consumption is animportant route of human exposure to endocrine-disruptingchemicals. So far, this has been demonstrated by exposure modelingor analytical identification of single substances in foodstuff(e.g., phthalates) and human body fluids (e.g., urine and blood).Since the research in this field is focused on few chemicals (andthus missing mixture effects), the overall contamination of edibleswith xenohormones is largely unknown. The aim of this study was toassess the integrated estrogenic burden of bottled mineral water asmodel foodstuff and to characterize the potential sources of theestrogenic contamination.
Materials, methods, and results In the present study, weanalyzed commercially available mineral water in an in vitro systemwith the human estrogen receptor alpha and detected estrogeniccontamination in 60% of all samples with amaximum activity equivalent to 75.2 ng/l of the natural sex hormone17β-estradiol. Furthermore, breeding of the molluskan modelPotamopyrgus antipodarum in water bottles made of glass and plastic[polyethylene terephthalate (PET)] resulted in an increasedreproductive output of snails cultured in PET bottles. Thisprovides first evidence that substances leaching from plastic foodpackaging materials act as functional estrogens in vivo.
Discussion and conclusions Our results demonstrate awidespread contamination of mineral water with xenoestrogens thatpartly originates from compounds leaching from the plasticpackaging material. These substances possess potent estrogenicactivity in vivo in a molluskan sentinel. Overall, the resultsindicate that a broader range of foodstuff may be contaminated withendocrine disruptors when packed in plastics.
