FDSC 200 Lecture Notes - Lecture 12: Potassium Metabisulfite, Main Source, Gluten

• School: McGill University
• Department: Food Science
• Course: FDSC 200
• Professor: Lawrence Goodridge

Document Summary

Objectives: describe trypes of microbes that impact the food supply, list factors that impact the growth of sigel celled organisms, r! Microorganisms: microbiology study of living organisms too small to be seen by the unaided human eye, only visible through a microscope microorganisms or microbes. Multiply rapidly, transfer easily from one surface to another. Types of single celled organisms: microbes that have a +ve use in foods are bacteria, yeasts, molds. Yeasts, molds fungi kingdom: microbes depend on outside sources of food to grow and multiply. Bacteria: single-celled organisms multiply through cell division, their cells no nucleus and are filled with gelatinous liquid cytoplasm. Classified by shape, cell wall structure, and oxygen needs: basic shapes. Spirilla spiral shape: 2 types of cell wall structures identified by the ability to be stained by a crystal violet dye gram"s strain, gram-+ve bacteria turn violet. Gram ve turn red: categorized by o2 needs. Anaerobic bacteria function best in an o2-free environment.