Decline pattern and risk assessment of cyenopyrafen in different varieties of Asian pear using liquid chromatography and tandem mass spectrometry

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Kabir M. H., Abd El-Aty A. M., Kim S., Rahman M. M., Chung H. S., Lee H. S., ...Daha Fazla

FOOD SCIENCE AND BIOTECHNOLOGY, cilt.26, sa.2, ss.537-543, 2017 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 2
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s10068-017-0074-6
  • Dergi Adı: FOOD SCIENCE AND BIOTECHNOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.537-543
  • Anahtar Kelimeler: cyenopyrafen, Asian pear, decline pattern, liquid chromatography, risk assessment, PESTICIDE-RESIDUES, GAS-CHROMATOGRAPHY, METALAXYL, LETTUCE, DEGRADATION, VEGETABLES, SPINACH, FRUITS, FATE
  • Atatürk Üniversitesi Adresli: Hayır

Özet

The dissipation pattern of a commercial cyenopyrafen formulation sprayed at the recommended dose on Asian pears (two different species) grown at two different sites was investigated using liquid chromatography-ultraviolet detection. Samples collected randomly over 14 days were extracted using acetone, partitioned using n-hexane/dichloromethane (8/2, v/v), and purified using a Florisil solidphase extraction cartridge. The residues in field-incurred samples were confirmed via liquid chromatography-tandem mass spectrometry. The method was validated in terms of excellent linearity in the solvent (R (2)=1); moreover, satisfactory recoveries (89.0-107.3%) were obtained at three fortification levels with a relative standard deviation (RSD)ae5.0% and the limits of detection and quantification of 0.0033 and 0.01 mg/kg, respectively. Although the residual levels at both sites were lower than the maximum residue limit (MRL=1 mg/kg), the dissipation at Site 2 was faster than that at Site 1. Consequently, the half-life (t(1/2)) in Site 2 (5.2 d) was shorter than that in Site 1 (9.8 d). Risk assessment at zero days showed acceptable daily intakes (%) of 27.25% and 24.52% at Sites 1 and 2, respectively, indicating that these fruit species are safe for consumption.