2026-05-18T14:34:30Zhttps://repository.lib.bcit.ca/oai/request

oai:repository.lib.bcit.ca:node-2772025-05-06T17:35:22Znode:264oai_pmh:all_repository_items

The presence of pesticide residue in farmer market produce: thiabendazole residues in various produce sold at local farmers' markets BACKGROUND: Thiabendazole is a pesticide that is mainly used after harvesting and directly applied toproduce such as citrus fruits, apples, pears, bananas, mangos, corn, carrots and potatoes in the form of aspray or dip. The most common and most likely route of exposure to pesticide for the average person isthrough their diet. Studies have shown that the health risk of regular consumption of pesticide residuethrough produce is linked with disruption to various functions in the body, such as reproductive,developmental and hormone irregularity. The following study tests whether fruits and vegetables sold at farmers markets contain Thiabendazole and if they are below the acceptable Maximum Residue Limits(MRLs) set by Health Canada. METHODS: A QuEChERS method and solid phase extraction was used to recover Thiabendazole fromvarious fruits and vegetables. The gas chromatography was used to analyze all samples and a calibrationcurve was produced to identify the concentration of Thiabendazole. RESULTS: Thiabendazole was detected in all of the citrus fruit samples, but was below detectable limits forall other fruits and vegetables. All Thiabendazole levels were below the Maximum Residue Level allowedby Health Canada. CONCLUSIONS: The various fruits and vegetables analyzed are all below the MRL, with only the citrus fruitshaving detectable concentrations. However, since the citrus fruits were imported, further studies arerequired on different pesticide compounds to determine if locally grown produce meet the MRL for otherpesticide compounds. 2020-04-26 English Zhou, RuJun British Columbia Institute of Technology School of Health Sciences PDF British Columbia Institute of Technology Text <p>This license enables reusers to copy and distribute the material in any medium or format in unadapted form only, for noncommercial purposes only, and only so long as attribution is given to the creator. CC BY-NC-ND includes the following elements: BY: credit must be given to the creator. NC: Only noncommercial uses of the work are permitted. ND: No derivatives or adaptations of the work are permitted. https://creativecommons.org/licenses/by-nc-nd/4.0/</p> Fruit Vegetables Gas chromatography Pesticides