Evaluation of the Effect of Pear Stone Cells on the Recovery of Multi-Class Pesticides

László Polgár, Béla Kmellár, P. Fodor

Research output: Contribution to journalArticle

Abstract

The widespread sample preparation method for the extraction of pesticide residues, the QuEChERS method, sometimes yields different pesticide recovery values for different food matrices. Pear (Pyrus communis L.) is an example of a matrix that can be characterized with somewhat lower pesticide recoveries. In order to investigate the reason for this result, the most characteristic structural feature of pears, the stone cells, possessing a specific surface due to their greater cellulose and lignin contents, were isolated and purified. The isolated stone cells were used for the preparation of a model sample in combination with tomato, a food matrix showing high pesticide recovery values, in a pesticide spiking experiment. Eleven multi-class pesticides were selected for the study where the quantification was carried out with HPLC-ESI-MS/MS. No significant differences were found between the pesticide recoveries obtained from the tomato and the combined tomato-pear stone cells matrices, which indicates the reason behind the lower pesticide recoveries in pear matrices is still to be determined.

Original languageEnglish
Pages (from-to)563-569
Number of pages7
JournalAnalytical Letters
Volume45
Issue number5-6
DOIs
Publication statusPublished - Mar 2012

Fingerprint

Pyrus
Pesticides
Recovery
Lycopersicon esculentum
Food
Pesticide Residues
Lignin
Cellulose
High Pressure Liquid Chromatography

Keywords

  • LC-MS/MS
  • Pear
  • Pesticide
  • QuEChERS
  • Sclereid cell
  • Stone cell

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Clinical Biochemistry
  • Biochemistry, medical
  • Electrochemistry
  • Spectroscopy

Cite this

Evaluation of the Effect of Pear Stone Cells on the Recovery of Multi-Class Pesticides. / Polgár, László; Kmellár, Béla; Fodor, P.

In: Analytical Letters, Vol. 45, No. 5-6, 03.2012, p. 563-569.

Research output: Contribution to journalArticle

Polgár, László ; Kmellár, Béla ; Fodor, P. / Evaluation of the Effect of Pear Stone Cells on the Recovery of Multi-Class Pesticides. In: Analytical Letters. 2012 ; Vol. 45, No. 5-6. pp. 563-569.
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