PMID- 28844143 OWN - NLM STAT- MEDLINE DCOM- 20171113 LR - 20191210 IS - 1520-5118 (Electronic) IS - 0021-8561 (Linking) VI - 65 IP - 37 DP - 2017 Sep 20 TI - Simultaneous Enantioselective Determination of the Chiral Fungicide Prothioconazole and Its Major Chiral Metabolite Prothioconazole-Desthio in Food and Environmental Samples by Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry. PG - 8241-8247 LID - 10.1021/acs.jafc.7b02903 [doi] AB - An efficient and sensitive chiral analytical method was established for the determination of the chiral fungicide prothioconazole and its major chiral metabolite prothioconazole-desthio in agricultural and environmental samples using ultraperformance liquid chromatography-tandem mass spectrometry. The optical rotation and absolute configuration of enantiomers were identified by optical rotation detector and electronic circular dichroism spectra. The elution order of prothioconazole and its chiral metabolite enantiomers was R-(+)-prothioconazole-desthio, S-(-)-prothioconazole-desthio, R-(-)-prothioconazole, and S-(+)-prothioconazole. The mean recoveries from the samples was 71.8-102.0% with intraday relative standard deviations (RSDs) of 0.3-11.9% and interday RSDs of 0.9-10.6%. The formation of prothioconazole-desthio was studied in soil under field conditions and enantioselective degradation was observed for chiral prothioconazole. Remarkable enantioselective degradation was observed: R-prothioconazole degraded preferentially with EF values from 0.48 to 0.37. Although prothioconazole-desthio is the most remarkably bioactive metabolite, no obvious enantioselective behavior was observed in soil. These results may help to systematically evaluate prothioconazole and its metabolites in food and environmental safety. FAU - Zhang, Zhaoxian AU - Zhang Z AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing 210095, China. FAU - Zhang, Qing AU - Zhang Q AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing 210095, China. FAU - Gao, Beibei AU - Gao B AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing 210095, China. FAU - Gou, Gaozhang AU - Gou G AD - College of Science, Honghe University , Mengzi 661199, China. FAU - Li, Lianshan AU - Li L AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing 210095, China. FAU - Shi, Haiyan AU - Shi H AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing 210095, China. FAU - Wang, Minghua AU - Wang M AUID- ORCID: 0000-0001-5715-4981 AD - Department of Pesticide Science, College of Plant Protection, Nanjing Agricultural University, State & Local Joint Engineering Research Center of Green Pesticide Invention and Application , Nanjing 210095, China. LA - eng PT - Evaluation Study PT - Journal Article DEP - 20170911 PL - United States TA - J Agric Food Chem JT - Journal of agricultural and food chemistry JID - 0374755 RN - 0 (Fungicides, Industrial) RN - 0 (Soil Pollutants) RN - 0 (Triazoles) RN - 27B9FV58IY (prothioconazole) SB - IM MH - Chromatography, High Pressure Liquid/*methods MH - Cucumis sativus/chemistry MH - Food Contamination/*analysis MH - Fungicides, Industrial/*chemistry MH - Pyrus/chemistry MH - Soil Pollutants/*chemistry MH - Stereoisomerism MH - Tandem Mass Spectrometry/*methods MH - Triazoles/*chemistry OTO - NOTNLM OT - UPLC-MS/MS OT - absolute configuration OT - chiral metabolite OT - enantioseparation OT - prothioconazole EDAT- 2017/08/29 06:00 MHDA- 2017/11/14 06:00 CRDT- 2017/08/29 06:00 PHST- 2017/08/29 06:00 [pubmed] PHST- 2017/11/14 06:00 [medline] PHST- 2017/08/29 06:00 [entrez] AID - 10.1021/acs.jafc.7b02903 [doi] PST - ppublish SO - J Agric Food Chem. 2017 Sep 20;65(37):8241-8247. doi: 10.1021/acs.jafc.7b02903. Epub 2017 Sep 11.