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http://dx.doi.org/10.5012/jkcs.2016.60.2.118

Analysis Method of Parabens in Human Breast Milk by LC-MS/MS System  

Park, Na-Youn (Department of Health, Environment images Safety, Eulji University)
Lee, Eun-Hee (Graduate School of Health Science, Far-East University)
Kho, Younglim (Department of Health, Environment images Safety, Eulji University)
Publication Information
Journal of the Korean Chemical Society / v.60, no.2, 2016 , pp. 118-124 More about this Journal
Abstract
Parabens were commonly used for preventing the growth of microorganisms as preservatives in the pharmaceutical, cosmetic and food industry. Also, parabens are known endocrine disruptors because of their estrogenic effects on human. Parabens affect the endocrine system and show adverse effect such as, genital malformations, precocious puberty and testicular cancer in young children, infants and fetuses. In this study, we developed analytical method for four parabens (methyl paraben, ethyl paraben, propyl paraben, butyl paraben) in human breast milk which frequently consumed by newborn baby. The analytes were extracted using liquid-liquid extraction (LLE) after enzyme hydrolysis with protease and lipase, then quantitative analysis was performed by liquid chromatography tandem mass spectrometry (LC-MS/MS). The method validation results were as follows; the linearity of calibration curves were excellent with coefficient of determinations (r2) higher than 0.999, the limit of detections (LODs) were 0.019~0.044 ng/mL, the accuracies were 85.3~105.9% and the precisions were lower than 10%. The average concentration ± standard deviation of parabens in ten human breast milk sample were MP 0.660 ± 0.519 ng/mL, EP 1.631 ± 2.081 ng/mL and PP 0.326 ± 0.320 ng/mL, and BP was not detected.
Keywords
Paraben; Breast milk; Liquid-liquid extraction; LC-MS/MS;
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