The document discusses microbiology related to food and water. It describes how food and water can become contaminated with microorganisms from various sources like soil, food handlers, and animal hides. This contamination can lead to food spoilage, foodborne illness, and waterborne diseases. The document outlines various bacteria, viruses, and parasites that can cause diseases when ingested through contaminated food or water. It also discusses methods used to study and control microorganisms in food and water to prevent diseases.
22. Example of a viable count www.themegallery.com Company Logo The 10 -3 dilution has a suitable number of colonies, the others being either too high or too low for accuracy. The original water sample is calculated to have contained 72,000(72 x 10 3 ) viable cells per mL. Dilution Plate Count* Undiluted Too crowded 10 -1 To count 10 -2 510 10 -3 72 10 -4 6 10 -5 1
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