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  • Title: Residue Distribution, Dissipation Behavior, and Removal of Four Fungicide Residues on Harvested Apple after Waxing Treatment.
    Author: Jiang W, Chen X, Liu F, Pan C.
    Journal: J Agric Food Chem; 2019 Feb 27; 67(8):2307-2312. PubMed ID: 30735378.
    Abstract:
    The residue distribution and dissipation of pyrimethanil, fludioxonil, cyprodinil, and kresoxim-methyl, which were introduced during postharvest waxing treatments of apples, were investigated. In addition, different residue removal methods were tested for the four fungicides in apples, and the removal efficiencies were compared. A multiresidue analytical method was developed based on quick, easy, cheap, effective, rugged, and safe method (QuEChERS) for the determination of the fungicide residues in apples. The dissipation study demonstrated that there was no significant change of fungicide residue magnitude during a 40-day storage process under ambient temperature. The fungicide residues in apples by wax treatment were shown to be very much stable. The results of residue distribution study demonstrated that waxing treatment may help to reduce the risk of pesticide when only the pulp was consumed. In the residue removal study, results suggested that higher temperature and the addition of acetic acid can improve the residue removal efficiency.
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