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2024 Vol.51, Issue 4 Preview Page

Food & Chemistry

Residual characteristics of picoxystrobin, flufenoxuron, and teflubenzuron in Chinese matrimony vine by heat-drying treatment
Seo-Young Jang1
,
Young-Shin Kim1
,
Chi-Hwan Lim1*
1Department of Bio-Environmental Chemistry, Chungnam National University, Daejeon 34134, Korea
*Corresponding Author
1 December 2024. pp. 775-785
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Abstract

Chinese matrimony vine (Lycium chinense) is applied with fungicides and insecticides such as picoxystrobin, flufenoxuron, and teflubenzuron during the cultivation. After the harvest, the Chinese matrimony vine is dried at 60℃ to prevent spoiling during storage before distribution. During the heat-drying treatment, the concentrations of pesticides remaining in the agricultural products can increase, raising safety concerns. In this study, we cultivated the Chinese matrimony vine with applications of picoxystrobin, flufenoxuron, and teflubenzuron in line with their application guidelines and harvested the final products 7 and 14 days after the application. The pesticide residue analysis was conducted to evaluate the residual characteristics of the applied pesticides before and after the heat-drying treatment of the Chinese matrimony vine at 60℃. The residual concentrations of the three applied pesticides dissipated in the harvested Chinese matrimony vine over time and were in the range of 0.34 to 1.02 mg·kg-1, which are below their maximum residue levels (MRLs). After the heat-drying, the residual concentrations of the pesticide (1.23 to 4.36 mg·kg-1) increased due to the biomass reduction but were still below the MRLs. The processing factors of picoxystrobin, flufenoxuron, and teflubenzuron in the Chinese matrimony vine by heat-drying treatment were calculated as 3.35, 4.75, and 3.85, respectively. In conclusion, the Chinese matrimony vines grown by applications with the tested pesticides were safe from the pesticide residues, and the heat-drying treatment increased the pesticide residue concentrations at the levels that do not exceed their MRLs.

Keywords
flufenoxuron
LC-MS/MS
picoxystrobin
processing factor
teflubenzuron
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Information
  • Publisher :Institute of Agricultural Science, Chungnam National University
  • Publisher(Ko) :충남대학교 농업과학연구소
  • Journal Title :Korean Journal of Agricultural Science
  • Journal Title(Ko) :농업과학연구
  • Volume : 51
  • No :4
  • Pages :775-785
  • Received Date : 2024-09-23
  • Revised Date : 2024-11-05
  • Accepted Date : 2024-11-12
  • DOI :https://doi.org/10.7744/kjoas.510427
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