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BCIT Environmental Public Health Journal
Article . 2015 . Peer-reviewed
Data sources: Crossref
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Pesticide residues in organic apples

determining the amounts of thiabendazole, diphenylamine, and myclobutanil in organic apples
Authors: Ying Tan; null BCIT School of Health Sciences, Environmental Health; Bobby Sidhu; Kevin Soulsbury; Bob Bower;

Pesticide residues in organic apples

Abstract

  Objectives: The popularity of organic diets continues to increase even without sound evidence that these diets are healthier than conventional diets. As its popularity increases, organic foods become more readily available and accessible to the public, and genuinity comes into question as farmers and retailers find ways to profit from this trend. Although organic produce will never be completely free of pesticides, they are expected to have considerably lower amounts. In recent years, pesticide residues in organic apples have been found to be at levels higher than normal background levels, indicating intentional application by farmers. Thiabendazole, diphenylamine, and myclobutanil are some of the more common synthetic pesticides that have been found in organic apples; therefore, the following study tested whether or not the levels of thiabendazole, diphenylamine, and myclobutanil in organic apples were below the acceptable organic standards of 5% of their respective Maximum Residue Limits (MRLs). Methods: A modified QuEChERS method involving juicing and extraction was used to recover pesticides from the organic apples. Two additional samples were spiked with 1 ppm of each pesticide as controls to determine if the method was able to detect the pesticides. One sample was spiked before the juicing step, and the other sample was spiked after the juicing step. Samples were then analyzed using gas chromatography. Results: Thiabendazole, diphenylamine, and myclobutanil were not detected in all 30 organic apple samples. Furthermore, these pesticides were only detected in the one of the spiked samples – the sample which was spiked after it was juiced. Conclusion: Organic apples grown in BC meet the organic standard of containing pesticide residue levels below 5% of the MRL, at least for thiabendazole, diphenylamine, and myclobutanil. However, since pesticides were not detected in the sample which was spiked before juicing, the methodology of this study may require modification. One possible reason for this finding is that pesticides may be concentrated in the pulp that is separated during juicing, therefore suggesting that juicing apples may be a good practice for reducing the consumption of pesticides.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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