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BIOLOGICAL, CHEMICAL AND PHYSICAL HAZARDS

Biological Pathogenic bacteria, e.g. Escherichi coli, Salmonella spp., usually associated with faecal contamination from warm-blooded animals, or others, e.g. Listeria monocytogenes, commonly found in contaminated soil, water and ruminants

Naturally occurring plant toxins, e.g. alkaloids, cyanogen glycosides

Fungal, e.g. ergot, mycotoxins

Parasites, e.g. Cyclospora, Entamoeba, Giardia, Cryptosporidium

Viruses, e.g. hepatitis A, Norwalk virus, Rotavirus
Chemical Pesticide, insecticide and fungicide residues (international food law includes maximum residue levels for named compounds to be used on specific fruit and vegetables)

Heavy metals, e.g. zinc, lead, aluminium

Mineral oils, e.g. diesel, grease, hydraulic oil
Physical Glass, metal, stones

Wood and twigs

Pieces of bone and plastic
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Natural Resources Institute 2003