food sssssssasaasssssssintoxication.pptx

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1. Food intoxication Intoxication:  occurs from eating a food that contains a toxin produced by bacteria . An example of food intoxication is Clostridium botulinum poisoning. Intoxification: occurs when live bacterial cells are ingested which then produce toxins in the body. An example of food intoxification is Clostridium perfringens . Infection: occurs when live bacterial cells are ingested. These bacterial cells can then grow in the digestive tract and cause symptoms. An example of a bacterial infection is  Salmonella  infection.

2. Foodborne intoxication, more commonly known as food poisoning, is caused by eating food that contains toxins that are released by pathogens ; the pathogens themselves do not cause illness.

3. How is food poisoning different from food infection food intoxication/poisoning is caused by toxins released by microorganisms after they are ingested, food infections are by the presence of toxins in food before consumption .

4. Food infection Food intoxication It is caused by ingestion of viable microorganisms in food. It is caused by ingestion of pre-formed toxin in food. In this case microorganisms multiplies inside the host. Microorganisms do not multiply inside the host. Microorganisms as well as its toxin may be responsible for disease production. Microorganisms itself is not associated with disease production and disease is caused by its toxin. E.g. includes: Salmonelosis, Shigellosis, gastroenteritis caused by vibrio spp., E. coli. E.g. includes: disease caused by Clostridium botulinum, Staphylococcus aureus, etc.

5. Preventing contamination of food: Good personal hygiene of food handler is very important to prevent contamination because  S. aureus  enters into food from skin and upper respiratory tract of human being. Person who is carrier of  S. aureus  should not be allowed to handle food. Preventing growth and toxin production: Growth of  S. aureus  in food and toxin production can be prevented by adequate refrigeration of food. Enterotoxin of  S. aureus  is heat stable. Therefore, it can be damaged by sufficient heating the food befor e eating.