Study of imazalil residues in glasshouse minicucumber pickles

Citation
Vm. Scussel et R. King, Study of imazalil residues in glasshouse minicucumber pickles, INT J ENV A, 80(2), 2001, pp. 129-139
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
ISSN journal
0306-7319 → ACNP
Volume
80
Issue
2
Year of publication
2001
Pages
129 - 139
Database
ISI
SICI code
0306-7319(2001)80:2<129:SOIRIG>2.0.ZU;2-N
Abstract
Brined minicucumbers, brine, pickles, and pickling juice were analysed for imazalil (IMA) residues and T-824 by HPLC after glasshouse minicucumbers IM -treated were submitted to pickling. The distribution of IMA on minicucumbe r prior to pickling, seven days after treatment, increased somewhat from pe el to flesh and core. Most of it was detected in the peel (65 %), being 18 % transferred to the flesh and 7 % detected in the minicucumbers core when they were IMA treated at 5 mg k(-1). The pickling process behaved like an e xtended extraction. The whole process reduced IMA residue on the minicucumb er through the two stages of pickling: part of it was removed by the (a) br ining and (b) pickling stages, remaining ca. 7 % of IMA on the pickled mini cucumbers. The process had quite a beneficial effect on IMA residue, produc ing pickles with lower amount of IMA than the MRL and no T824 formation was observed at any stage of pickling, even after seven days under the acidic medium contact. As far as the pKa of IMA is concerned, the acetic acid medi um surrounding the IMA-treated minicucumbers improved IMA solubility leadin g to abetter removal.