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In vitro assessment of pesticide residues bioaccessibility in conventionally grown blueberries as affected by complex food matrix

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2020
Authors
Milincić, Danijel D.
Vojinović, Uroš
Kostić, Aleksandar
Pešić, Mirjana
Špirović-Trifunović, Bojana
Brkić, Dragica
Stević, Milan
Kojić, Milan
Stanisavljević, Nemanja S.
Article (Published version)
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Abstract
The aim of this study was to investigate the bioaccessibility of pesticide residues in blueberries (com-mercial and sample from controlled field trial) from Serbia, involving the presence of a complex food matrix and to assess the potential risk to human health. The presence of nine active substances (azox-ystrobin, boscalid, fludioxonil, cyprodinil, pyrimethanil, pyridaben, pyriproxyfen, acetamiprid and thia-metoxam) in initial blueberry samples was determined in concentration range from 5.15 mu g/kg for thiametoxam to 187 mu g/kg for azoxystrobin. Clothianidin, metabolite of thiametoxam, was not detected in any blueberry sample. However, after in vitro digestion, the content of initially detected pesticides residues was significantly decreased or it was below limit of quantification resulting in the total bio-accessibility of about 15%. Azoxystrobin, pyrimethanil and fludioxonil was quantified in digestive juice at concentrations which were about 81%, 37% and 10% less than the inital... concentration, respectively. The presence of food matrix during digestion of blueberries even more severely reduced concentration of pesticide residues (total bioaccessibility was about 7%) compared to digestion without the food matrix. Only azoxystrobin was quantified after digestion with food matrix in concentration of 27 mu g/kg in sample from controlled field trial and detected in two commercial samples but below the limit of quantification. Furthermore, chronic risk assessment indicated that risk is acceptable for the health of different human subpopulation groups. The current study on pesticides residues, most commonly applied on blueberries, provides for the first time an insight into their bioaccessibility under conditions that mimic physiological environment of human digestive tract.

Keywords:
In vitro digestion / Blueberry / Pesticide residues / Food matrix / Risk assessment
Source:
Chemosphere, 2020, 252
Publisher:
  • Pergamon-Elsevier Science Ltd, Oxford
Funding / projects:
  • Genes and molecular mechanisms promoting probiotic activity of lactic acid bacteria from Western Balkan (RS-173019)
  • Development of integrated management of harmful organisms in plant production in order to overcome resistance and to improve food quality and safety (RS-46008)

DOI: 10.1016/j.chemosphere.2020.126568

ISSN: 0045-6535

PubMed: 32220723

WoS: 000534377000077

Scopus: 2-s2.0-85082190379
[ Google Scholar ]
URI
http://aspace.agrif.bg.ac.rs/handle/123456789/5371
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  • Radovi istraživača / Researchers’ publications
Institution/Community
Poljoprivredni fakultet

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