Experimental and theoretical determination of pesticide processing factors to model their behavior during virgin olive oil production.

The purpose of the present work was the experimental evaluation of pesticides transfer to virgin olive oil during the production step and prediction of their processing factors, which could be eventually used for the calculation of maximum residue limits (MRLs) in olive oil from the MRLs set in olives. A laboratory-scale Abencor system was used for the production of olive oil from olives spiked with the 104 pesticides studied, three different chromatographic methods being used for the analysis of raw olives and the obtained olive oil: (i) gas chromatography-tandem mass spectrometry (GC-MS/MS) for GC-amenable pesticides; (ii) hydrophilic interaction liquid chromatography-tandem mass spectrometry (HILIC-MS/MS) for polar pesticides, and; (iii) reversed-phase liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) for low to medium polarity pesticides. Processing factors experimentally calculated were correlated to their octanol-water partitioning coefficient (logKow), enabling the calculation of the equivalent MRLs in olive oil from the MRLs in olives, considering the percentage of oil extracted (oil yield) and the log Kow of each pesticide.

[1]  Ruben P. Jolie,et al.  Effect of household and industrial processing on levels of five pesticide residues and two degradation products in spinach , 2012 .

[2]  M. Ramezani,et al.  Dissipation behaviour, processing factors and risk assessment for metalaxyl in greenhouse-grown cucumber. , 2015, Pest management science.

[3]  Fengmao Liu,et al.  Effects of storage and processing on residue levels of chlorpyrifos in soybeans. , 2014, Food chemistry.

[4]  Nan Zou,et al.  Residue levels of five grain-storage-use insecticides during the production process of sorghum distilled spirits. , 2016, Food chemistry.

[5]  A. Fernández-Alba,et al.  Processing factor for a selected group of pesticides in a wine-making process: distribution of pesticides during grape processing , 2013, Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment.

[6]  Bienvenida Gilbert-López,et al.  Evaluation of different cleanup sorbents for multiresidue pesticide analysis in fatty vegetable matrices by liquid chromatography tandem mass spectrometry. , 2016, Journal of chromatography. A.

[7]  T. Albanis,et al.  Multiclass pesticide determination in olives and their processing factors in olive oil: comparison of different olive oil extraction systems. , 2008, Journal of agricultural and food chemistry.

[8]  Y. Li,et al.  Effect of commercial processing on pesticide residues in orange products , 2012, European Food Research and Technology.

[9]  Xingang Liu,et al.  Effect of household canning on the distribution and reduction of thiophanate-methyl and its metabolite carbendazim residues in tomato , 2014 .

[10]  D. Oulkar,et al.  Residue dissipation and processing factor for dimethomorph, famoxadone and cymoxanil during raisin preparation. , 2015, Food chemistry.

[11]  A. Fernández-Alba,et al.  Prediction of the processing factor for pesticides in apple juice by principal component analysis and multiple linear regression , 2013, Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment.

[12]  A. Abou-Arab.  Behavior of pesticides in tomatoes during commercial and home preparation , 1999 .

[13]  W Steurbaut,et al.  Effects of food processing on pesticide residues in fruits and vegetables: a meta-analysis approach. , 2010, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[14]  Andrea Vass,et al.  Determination of polar pesticides in olive oil and olives by hydrophilic interaction liquid chromatography coupled to tandem mass spectrometry and high resolution mass spectrometry. , 2016, Talanta.