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Residue level and dissipation pattern of lepimectin in shallots using high-performance liquid chromatography coupled with photodiode array detection.
Kim, Sung-Woo; Rahman, Md Musfiqur; Abd El-Aty, A M; Truong, Lieu T B; Choi, Jeong-Heui; Park, Joon-Seong; Kim, Mi-Ra; Shin, Ho-Chul; Shim, Jae-Han.
Afiliación
  • Kim SW; Biotechnology Research Institute, College of Agriculture and Life Science, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 500-757, Republic of Korea.
  • Rahman MM; Biotechnology Research Institute, College of Agriculture and Life Science, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 500-757, Republic of Korea.
  • Abd El-Aty AM; Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, Seoul, 143-701, Republic of Korea. abdelaty44@hotmail.com, amabdelaty@konkuk.ac.kr.
  • Truong LT; Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, 12211, Giza, Egypt. abdelaty44@hotmail.com, amabdelaty@konkuk.ac.kr.
  • Choi JH; Biotechnology Research Institute, College of Agriculture and Life Science, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 500-757, Republic of Korea.
  • Park JS; Biotechnology Research Institute, College of Agriculture and Life Science, Chonnam National University, Yongbong-ro 77, Buk-gu, Gwangju, 500-757, Republic of Korea.
  • Kim MR; Bio Control Research Center, Jeonnam Bioindustry Foundation, 495, Im-myeon, Gokseong-gun, Jeollanam-do, 516-942, Republic of Korea.
  • Shin HC; Research Planning and Management Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Cheongju, Chungcheongbuk-do, 28159, Republic of Korea.
  • Shim JH; Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, Konkuk University, Seoul, 143-701, Republic of Korea.
Biomed Chromatogr ; 30(11): 1835-1842, 2016 Nov.
Article en En | MEDLINE | ID: mdl-27187504
Lepimectin, as an emulsifiable concentrate, was sprayed on shallots at the recommended dose rate (10 mL/20 L) to determine its residue levels, dissipation pattern, pre-harvest residue limits (PHRLs), and health risk. Samples were randomly collected over 10 days, extracted with acetonitrile, purified using an amino solid-phase extraction (NH2 -SPE) cartridge and analyzed using a high-performance liquid chromatography-photodiode array detection method. Field-incurred samples were confirmed using ultra-performance liquid chromatography-tandem mass spectrometry. The linearity was excellent, with a determination coefficient (R2 ) of ≥0.9991. The recoveries at two spiking levels (0.2 and 1.0 mg/kg) ranged from 84.49 to 87.64% with relative standard deviations of ≤7.04%. The developed method was applied to field samples grown in separate greenhouses, one located in Naju and one in Muan, in the Republic of Korea. The dissipation pattern was described by first-order kinetics with half-lives of 1.9 (Naju) and 1.7 days (Muan). The PHRL curves indicated that, if the lepimectin residues are <0.18 (Naju) and <0.13 mg/kg (Muan) 5 days before harvest, the residue levels will be lower than the maximum residue limit (0.05 mg/kg) upon harvesting. The risk assessment data indicated that lepimectin is safe for use in the cultivation of shallots, with no risk of detrimental effects to the consumer.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Residuos de Plaguicidas / Cromatografía Líquida de Alta Presión / Chalotes / Compuestos Macrocíclicos / Espectrometría de Masas en Tándem / Aditivos Alimentarios / Lactonas Tipo de estudio: Diagnostic_studies / Risk_factors_studies Idioma: En Revista: Biomed Chromatogr Año: 2016 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Residuos de Plaguicidas / Cromatografía Líquida de Alta Presión / Chalotes / Compuestos Macrocíclicos / Espectrometría de Masas en Tándem / Aditivos Alimentarios / Lactonas Tipo de estudio: Diagnostic_studies / Risk_factors_studies Idioma: En Revista: Biomed Chromatogr Año: 2016 Tipo del documento: Article Pais de publicación: Reino Unido