FOS-4209 Lecture Notes - Entamoeba, Aspergillus, Clostridium Botulinum
17 Sep 2013
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Fos4209: biological hazards: considered to be the most important agents of foodborne illnesses, food born illness caused by bacteria falls into 3 categories: Food infection: an illness resulting from ingestion of food containing large numbers of living bacteria that colonize the host"s intestine. Food intoxication: an illness resulting from ingestion of food containing a pre formed toxin (ex. Food intoxification: an illness occurs when bacteria enter the intestinal tract and then start to produce the toxin in the intestine (ex. Molds: produce highly toxic mycotoxins, produce a range of disorders from gastroenteritis to cancer, more than 300 mycotoxins identified (small amount to occur in foods that would cause concern, types of molds: Aflatoxins= (in corn, peanuts, figs, tree nuts) produces aspergillus flavus, aspergillus parasiticus. Ochratoxin= (corn, cereals, coffee, beans) penicillium veruucosum, aspergillus ochraceus. Chemical hazards (food toxicant: defined as any chemical substance that can elicit a detrimental effect in a biological system, fall into 4 categories:
