MCB 3020L Lecture Notes - Lecture 51: Freeze-Drying, Enrichment Culture, Microbiological Culture
Document Summary
Routine growth of nutrient made from extracts of yeasts, meat or plants, or digests of proteins where composition varies between each batch. Experiments work or for the growth of autotrophic bacteria. Parital digestion of protein by acids or enzymes that create shorter chains of amino acids that microorganism are able to use. Media that has chemicals that dissolve oxygen and deplete the oxygen in the culture medium so anaerobic bacteria can grow. Microbes that grow better at high carbon dioxide concentrations. Incubators used to grow aerobic bacteria that require higher or lower concentration of carbon dioxide than are found in the atmosphere. Cultures are placed in a large sealed jar with a candle which burns until a certain concentration of carbon dioxide is reched. Designed to suppress the growth of unwanted bacterium and encourage the growth of the desired microbes. Makes it easier to distinguish colonies of the desired organism from other colonies growing on the same plate.
