PMID- 29601252 OWN - NLM STAT- MEDLINE DCOM- 20190930 LR - 20200225 IS - 1552-5732 (Electronic) IS - 0890-3344 (Print) IS - 0890-3344 (Linking) VI - 34 IP - 2 DP - 2018 May TI - Chemical Contaminants in Raw and Pasteurized Human Milk. PG - 340-349 LID - 10.1177/0890334418759308 [doi] AB - BACKGROUND: Environmental contaminants ranging from legacy chemicals like p,p'-dichlorodiphenyltrichloroethane (DDT) to emerging chemicals like phthalates are ubiquitous. Research aims/questions: This research aims to examine the presence and co-occurrence of contaminants in human milk and effects of pasteurization on human milk chemical contaminants. METHODS: We analyzed human milk donated by 21 women to a milk bank for 23 chemicals, including the persistent organic pollutants (POPs) polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), dichlorodiphenyltrichloroethane (DDT), and dichlorodiphenyldichloroethylene (DDE) isomers that are known to sequester in adipose tissue, along with the current-use and nonpersistent pesticides chlorpyrifos and permethrin, phthalates, and bisphenol A (BPA). Human milk was analyzed raw and pasteurized for these chemicals using gas chromatography-tandem mass spectrometry for the POPs and high-performance liquid chromatography-tandem mass spectrometry for non-POPs. RESULTS: Within the different chemical classes, PBDE47, PCB153, ppDDE, and MEHHP (phthalate metabolite) had the highest median concentrations and were observed in all samples. We also observed chlorpyrifos and BPA in all samples and permethrin in 90% of the samples tested. Only two chemicals, chlorpyrifos and permethrin, were susceptible to substantial degradation from pasteurization, a standard method for processing donated human milk. CONCLUSION: We detected 19 of 23 chemicals in all of our prepasteurized milk and 18 of 23 chemicals in all of our pasteurized milk. Pasteurization did not affect the presence of most of the chemicals. Future research should continue to explore human milk for potential chemical contamination and as a means to surveil exposures among women and children. FAU - Hartle, Jennifer C AU - Hartle JC AD - 1 San Jose State University, San Jose, CA, USA. FAU - Cohen, Ronald S AU - Cohen RS AD - 2 Stanford University, Stanford, CA, USA. AD - 3 Mother's Milk Bank, San Jose, CA, USA. FAU - Sakamoto, Pauline AU - Sakamoto P AD - 3 Mother's Milk Bank, San Jose, CA, USA. FAU - Barr, Dana Boyd AU - Barr DB AD - 4 Emory University, Atlanta, GA, USA. FAU - Carmichael, Suzan L AU - Carmichael SL AD - 2 Stanford University, Stanford, CA, USA. LA - eng GR - P30 ES019776/ES/NIEHS NIH HHS/United States PT - Journal Article DEP - 20180330 PL - United States TA - J Hum Lact JT - Journal of human lactation : official journal of International Lactation Consultant Association JID - 8709498 RN - 0 (Environmental Pollutants) RN - CIW5S16655 (DDT) MH - Adult MH - California MH - Cross-Sectional Studies MH - DDT/adverse effects/chemistry MH - Environmental Monitoring/methods MH - Environmental Pollutants/adverse effects/chemistry MH - Female MH - Food Contamination/*analysis/statistics & numerical data MH - Humans MH - Milk, Human/*chemistry MH - Pasteurization/standards PMC - PMC6422529 MID - NIHMS1006975 OTO - NOTNLM OT - human milk OT - milk bank COIS- Declaration of Conflicting Interests The authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. EDAT- 2018/03/31 06:00 MHDA- 2019/10/01 06:00 PMCR- 2019/03/18 CRDT- 2018/03/31 06:00 PHST- 2018/03/31 06:00 [pubmed] PHST- 2019/10/01 06:00 [medline] PHST- 2018/03/31 06:00 [entrez] PHST- 2019/03/18 00:00 [pmc-release] AID - 10.1177/0890334418759308 [doi] PST - ppublish SO - J Hum Lact. 2018 May;34(2):340-349. doi: 10.1177/0890334418759308. Epub 2018 Mar 30.