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KMID : 0881720190340010001
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Journal of Food Hygiene and Safety
2019 Volume.34 No. 1 p.1 ~ p.12
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Potential Contamination Sources on Fresh Produce Associated with Food Safety
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Choi Jung-Min
Lee Sang-In
Rackerby Bryna
Moppert Ian
McGorrin Robert
Ha Sang-Do
Park Si-Hong
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Abstract
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The health benefits associated with consumption of fresh produce have been clearly demonstrated and encouraged by international nutrition and health authorities. However, since fresh produce is usually minimally processed, increased consumption of fresh fruits and vegetables has also led to a simultaneous escalation of foodborne illness cases. According to the report by the World Health Organization (WHO), 1 in 10 people suffer from foodborne diseases and 420,000 die every year globally. In comparison to other processed foods, fresh produce can be easily contaminated by various routes at different points in the supply chain from farm to fork. This review is focused on the identification and characterization of possible sources of foodborne illnesses from chemical, biological, and physical hazards and the applicable methodologies to detect potential contaminants. Agro-chemicals (pesticides, fungicides and herbicides), natural toxins (mycotoxins and plant toxins), and heavy metals (mercury and cadmium) are the main sources of chemical hazards, which can be detected by several methods including chromatography and nano-tech-niques based on nanostructured materials such as noble metal nanoparticles (NMPs), quantum dots (QDs) and mag-netic nanoparticles or nanotube. However, the diversity of chemical structures complicates the establishment of one standard method to differentiate the variety of chemical compounds. In addition, fresh fruits and vegetables contain high nutrient contents and moisture, which promote the growth of unwanted microorganisms including bacterial pathogens (Salmonella, E. coli O157: H7, Shigella, Listeria monocytogenes, and Bacillus cereus) and non-bacterial pathogens (norovirus and parasites). In order to detect specific pathogens in fresh produce, methods based on molec-ular biology such as PCR and immunology are commonly used. Finally, physical hazards including contamination by glass, metal, and gravel in food can cause serious injuries to customers. In order to decrease physical hazards, vision systems such as X-ray inspection have been adopted to detect physical contaminants in food, while exceptional han-dling skills by food production employees are required to prevent additional contamination.
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KEYWORD
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Fresh produce, Biological hazards, Chemical hazards, Physical hazards, Detection
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