Food Contamination Caused By Microorganisms

1364 Words May 4th, 2015 6 Pages
Food contamination
Food can become unsafe to eat through chemical, physical and microbiological hazards.
• Physical hazards are caused by foreign matter which is not intended to be part of food and is capable of causing injury.
• Chemical hazards include naturally occurring toxins (such as alkaloids in potatoes), food contaminants (such as pesticides and fertilisers) and food additives (such as sodium propionate in bread).
• The majority of food borne illness is caused by microorganisms. Potential sources of microorganisms in food include animal feeds, soil and water, air and dust, and food handlers.
For the purpose of this paper I will solely focus on food contamination caused by microorganisms.
Health impacts from contaminated food
Contaminated food can lead to a variety of negative health impacts, however most commonly contaminated food can cause food poisoning. Food poisoning can be caused by eating food contaminated with bacteria, viruses, chemicals or poisonous metals such as lead or cadmium. Most food poisoning, however, is caused by bacteria. E. coli, Salmonella, Listeria and Campylobacter are some bacteria that cause food poisoning. Food poisoning occurs when sufficient numbers of bacteria of their toxins are present in food, which is then consumed. Food poisoning is quite common, affecting an estimated 5.4 million Australians each year (NSW Food Authority, 2015). Symptoms of food poisoning may include nausea, vomiting, stomach pains, diarrhoea and headache (The…
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