FND 100 Lecture Notes - Lecture 2: Facultative Anaerobic Organism, Raw Milk, Soil Contamination

• School: Ryerson University
• Department: Nutrition and Food
• Course: FND 100
• Professor: Yvonne Yuan

Document Summary

Listeria monocytogenes (chocolate and processed meats: gram positive, facultative anaerobic, short rod-shaped motile cells. Noted for its ability to grow at refrigeration temperatures and in salted and/or acidic foods. Added resistance in salt content and acid: symptom onset: 1 day 3 weeks. Backache: complications: (particularly in pregnant women and at-risk populations) Dairy products (cheeses, ice cream and raw milk. Vegetables (soil contamination: mode of transportation. Salmonella spp: gram negative, facultative anaerobic (can grow with or without oxygen), short rod- shaped cells. Cream filled desserts: mode of transportation. Particular a problem with central processing facilities in food production. Staphylococcus aureus: gram positive, facultative anaerobic cocci. Heat stable enterotoxin has effects on intestinal tract. Naturally present in nasal passages of healthy people. Present on hands, hair, nose, and throat of people: common foods. Found in cooked ready to serve foods due to cross contamination. Custards, milk and dairy foods: modes of transmission.