Introduction to Food Microbiology

Explore what is foodborne illness, foodborne disease, and food poisoning, identify foodborne pathogens, and explain when illness occurs and the symptoms, plus the difference between food poisoning and foodborne illness.

Understand foodborne illness, disease, and poisoning from contaminated food by pathogens or toxins, with symptoms like vomiting, fever, aches, and diarrhea, and role of unhygienic practices from production to consumption.

Explore major foodborne pathogens—Salmonella, Campylobacter, Listeria, and Shiga toxin–producing Escherichia coli—and how bacteria, viruses, parasites, chemicals, and toxins trigger illness, while immune status and age shape severity.

Explore the three types of intestinal bacteria—good, bad, and opportunistic—and how their proportions shift with age, with good bacteria like bifidobacteria supporting digestion, immunity, and vitamin synthesis.

Explore water and probiotics, define the microbiome, identify probiotic bacteria types and foods, and explain how probiotics work in tissues affected by autoimmune attack.

Explore how good and bad bacteria shape the microbiome, defend against pathogens, and support the immune system, with emphasis on probiotics and gut health.

Explore probiotic bacteria, including Lactobacillus in yogurt and fermented foods that aid lactose digestion and diarrhea, and Saccharomyces boulardii, a probiotic yeast supporting digestive health and irritable bowel syndrome symptoms.

Probiotics maintain balance by supporting immune function, inflammation control, digestion, and protecting the gut lining. They help after antibiotics, and good bacteria are a natural body part.

Explore food poisoning in depth by examining microorganisms, including bacteria such as E. coli, listeria, salmonella, campylobacter, Clostridium botulinum, Bacillus cereus, Vibrio species, plus viruses, parasites, prevention, and their traits.

Explore how food poisoning arises from bacteria, viruses, and parasites in food, with examples like Staphylococcus aureus, E. coli, Listeria monocytogenes, Salmonella. Practice safe handling with storage and heating.

Explore how Staphylococcus aureus can contaminate foods and produce a toxin that survives cooking, and how Escherichia coli relates to diarrheal disease in sanitation, with hygiene, refrigeration, and cooking precautions.

Explore Listeria monocytogenes as a refrigeration- and salt-tolerant foodborne pathogen threatening immunocompromised individuals, and show Salmonella from animal sources contaminating high-protein foods, with cooking above 150°F failing to destroy it.

Identify foodborne illness risks and prevent it by keeping refrigerated foods below 40 degrees Fahrenheit, cooling hot foods quickly, and avoiding the 40 to 140 degrees Fahrenheit danger zone.

Explore prevention of Campylobacter infections, including transmission from animal-origin foods, fecal contamination, and milk as a vehicle. Emphasize hygienic slaughter, cooling, aeration, and thorough cooking of meat and poultry.