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Statements

Subject Item
n2:RIV%2F60461373%3A22330%2F12%3A43894725%21RIV13-MSM-22330___
rdf:type
n16:Vysledek skos:Concept
dcterms:description
This study addresses a current trend in chemical food safety control represented by an effort to integrate analyses of various groups of food contaminants/toxicants into a single, high-throughput method. The choice of optimal sample preparation step is one of the key conditions to achieve method performance characteristics. In this context, we investigated the possibility to expand the scope of the three multi-analyte extraction procedures employed earlier in other studies for rapid isolation of either pesticides or mycotoxins from plant matrices. Following procedures were tested: A - aqueous acetonitrile extraction followed by partition (QuEChERS-like method), B - aqueous acetonitrile extraction, and C - pure acetonitrile extraction. On the list of target analytes, we had 288 pesticides (including %22troublesome%22 acidic, basic and base-sensitive compounds) together with 38 mycotoxins (including all EU regulated ones and many %22emerging%22 toxins on the European Food Safety Authority (EFSA) list). The matrices selected for the experiments, apple baby food, wheat flour, spices and sunflower seeds, represented various composition categories in terms of moisture, fat and extractable compounds (e.g. pigments, essential oils) content. In preliminary experiments, acceptable recoveries (70-120%) for most of analytes were obtained by the analysis of spiked matrices, regardless which extraction procedure was used. However, when analysing dry samples with incurred pesticide residues/mycotoxins, method C did not enable efficient extraction of some common contaminants. Procedure A, thanks to a higher matrix equivalent compared to method B and relatively less pronounced matrix effects, enabled lower quantification limits for all analyte/matrix combinations, with exception of polar mycotoxins and/or pesticides. Higher recoveries for the latter group of analytes could be achieved by method B; extraction efficiency of non-polar pesticides from matrix was rather poor by this method. This study addresses a current trend in chemical food safety control represented by an effort to integrate analyses of various groups of food contaminants/toxicants into a single, high-throughput method. The choice of optimal sample preparation step is one of the key conditions to achieve method performance characteristics. In this context, we investigated the possibility to expand the scope of the three multi-analyte extraction procedures employed earlier in other studies for rapid isolation of either pesticides or mycotoxins from plant matrices. Following procedures were tested: A - aqueous acetonitrile extraction followed by partition (QuEChERS-like method), B - aqueous acetonitrile extraction, and C - pure acetonitrile extraction. On the list of target analytes, we had 288 pesticides (including %22troublesome%22 acidic, basic and base-sensitive compounds) together with 38 mycotoxins (including all EU regulated ones and many %22emerging%22 toxins on the European Food Safety Authority (EFSA) list). The matrices selected for the experiments, apple baby food, wheat flour, spices and sunflower seeds, represented various composition categories in terms of moisture, fat and extractable compounds (e.g. pigments, essential oils) content. In preliminary experiments, acceptable recoveries (70-120%) for most of analytes were obtained by the analysis of spiked matrices, regardless which extraction procedure was used. However, when analysing dry samples with incurred pesticide residues/mycotoxins, method C did not enable efficient extraction of some common contaminants. Procedure A, thanks to a higher matrix equivalent compared to method B and relatively less pronounced matrix effects, enabled lower quantification limits for all analyte/matrix combinations, with exception of polar mycotoxins and/or pesticides. Higher recoveries for the latter group of analytes could be achieved by method B; extraction efficiency of non-polar pesticides from matrix was rather poor by this method.
dcterms:title
Critical assessment of extraction methods for the simultaneous determination of pesticide residues and mycotoxins in fruits, cereals, spices and oil seeds employing ultra-high performance liquid chromatography-tandem mass spectrometry Critical assessment of extraction methods for the simultaneous determination of pesticide residues and mycotoxins in fruits, cereals, spices and oil seeds employing ultra-high performance liquid chromatography-tandem mass spectrometry
skos:prefLabel
Critical assessment of extraction methods for the simultaneous determination of pesticide residues and mycotoxins in fruits, cereals, spices and oil seeds employing ultra-high performance liquid chromatography-tandem mass spectrometry Critical assessment of extraction methods for the simultaneous determination of pesticide residues and mycotoxins in fruits, cereals, spices and oil seeds employing ultra-high performance liquid chromatography-tandem mass spectrometry
skos:notation
RIV/60461373:22330/12:43894725!RIV13-MSM-22330___
n16:predkladatel
n17:orjk%3A22330
n3:aktivita
n15:P
n3:aktivity
P(2B06118), P(LH11059)
n3:cisloPeriodika
1262
n3:dodaniDat
n5:2013
n3:domaciTvurceVysledku
n6:8580588 n6:7726481 n6:7989253 n6:4915917 n6:3901556 n6:5939909
n3:druhVysledku
n13:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
129050
n3:idVysledku
RIV/60461373:22330/12:43894725
n3:jazykVysledku
n11:eng
n3:klicovaSlova
liquid chromatography - tandem mass spectrometry; sample preparation; mycotoxins; Pesticide residue
n3:klicoveSlovo
n8:sample%20preparation n8:liquid%20chromatography n8:mycotoxins n8:Pesticide%20residue
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[C35AE7E9D7F0]
n3:nazevZdroje
Journal of Chromatography A
n3:obor
n20:GM
n3:pocetDomacichTvurcuVysledku
6
n3:pocetTvurcuVysledku
6
n3:projekt
n4:LH11059 n4:2B06118
n3:rokUplatneniVysledku
n5:2012
n3:svazekPeriodika
2012
n3:tvurceVysledku
Lacina, Ondřej Kováčová, Jana Čajka, Tomáš Hajšlová, Jana Václavíková, Marta Zachariášová, Milena
n3:wos
000310760900002
s:issn
0021-9673
s:numberOfPages
11
n10:doi
10.1016/j.chroma.2012.08.097
n14:organizacniJednotka
22330