Enantioselective Degradation of Indoxacarb From Different Commercial Formulations Applied to Tea. Issue 3 (24th January 2015)

• Record Type: Journal Article
• Authors: Zhang, Yuping; Hu, Deyu; Meng, Xingang; Shi, Qingcai; Li, Pei; Jin, Linhong; Zhang, Kankan; Song, Baoan
• Is Part Of: Chirality. Volume 27:Issue 3(2015)
• Page Start: 262
• Page End: 267
• Publication Date: 2015-01-24
• Subjects: Chirality -- Periodicals; Pharmaceutical chemistry -- Periodicals; 541.22
• DOI: 10.1002/chir.22422
• Languages: English
• ISSNs: 0899-0042

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>The <named-content content-type="reactionType" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">stereoselective</named-content> degradation of indoxacarb enriched with (+)‐S‐indoxacarb (S/R:70/30) was investigated in three typical green teas. A convenient and precise chiral method was developed and validated for measuring indoxacarb enantiomers in green tea. The developed method was based on high‐performance <named-content content-type="chemicalTechnology" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">liquid chromatography</named-content> coupled with tandem <named-content content-type="chemicalTechnology" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">mass spectrometry</named-content> using a Chiralpak IC column. The <named-content content-type="reactionType" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">stereoselective</named-content> degradation of indoxacarb enantiomers showed that the (+)‐S‐enantiomer dissipated faster than the (−)‐R‐enantiomer in all three typical tea farms. However, no enantiomerization was observed after applying pure (+)‐S‐indoxacarb. Residues on tea plant of the active ingredient (+)‐S‐indoxacarb from suspension concentrate (SC) was more persistent than that from emulsifiable concentrate (EC). <italic>Chirality 27:262–267, 2015</italic>. © 2015 Wiley Periodicals, Inc.</p> </abstract>