PPT-LECTURE 4. MICROBIAL GROWTH

1 Microbial survival strategies 2 Microbial growth 3 Effects of the environment 4 Microbial cultures 5 Growth measurements 6 Antimicrobial agents 7 Antibiotics 1 Microbial survival. 1. 19. Copyright © McGraw-Hill Global Education Holdings, LLC. Permission required for reproduction or display.. Introduction to . Microbial . Taxonomy. Taxonomy. science of biological classification. in vitro. CLS 212: Medical Microbiology. . Microbicidal. or . Microbistatic. ?. . Microbicidal. . Microbicidal. . is . the process . or . an agent . that . kills. the microorganism. . A. Metabolism. 1. Anabolism. A) synthesis reactions (building up). 2. Catabolism. A) lysis reactions (breaking down). B. Enzymes. 1. proteins that facilitate chemical reactions. Microbial Metabolism. Batch culture and Kinetics of Microbial growth in batch culture. After inoculation the growth rate of the cells gradually increases.. The cells grow at a constant, maximum, rate and this period is known as the . D. ynamics on Fermentation . P. rogression. RAVE 2015. Linda F. Bisson. Department of Viticulture and Enology. University of California, Davis. Causes of Fermentation Arrest. Nutrient limitation. Nutrient imbalance. A. Metabolism. 1. Anabolism. A) synthesis reactions (building up). 2. Catabolism. A) lysis reactions (breaking down). B. Enzymes. 1. proteins that facilitate chemical reactions. Microbial Metabolism. A. Microbial Reproduction. 1. binary (transverse) fission. A) parent cell enlarges and duplicates all its genetic material. B) DNA copies move to opposite ends of parent and attach to a section of the cell membrane as it begins to pinch together at the center. . Definitions. Indigenous . flora. microorganisms . native or belonging naturally to a region.. Colonization. establishment . of a site of reproduction of microbes on a person without necessarily resulting in tissue invasion or . Updated: January 2015. By Jerald D. . H. endrix. Microbial Classification . and Taxonomy. Classification Systems. Levels of Classification. Definition of “Species”. Nomenclature. Useful Properties in Microbial Classification. Microbiology. Microbial Growth. Microbial requirements for growth:. 1. . Physical. A. . Temperature. Optimal growth temperature. Permissible range. human pathogens optimal = . 37°C. Microbial Growth. Microbial growth is the increase in number of cells, not cell size. Microbial Growth. The Requirements for Growth: . Physical Requirements. Temperature. Minimum growth temperature. Optimum growth temperature. Musafer. PhD. Microbial growth defined as an increase in cellular constituents resulting an increase in a microorganism size, population number or both.. 1-Lag phase. When M.O are inoculated into fresh culture medium, will not reproduce immediately, therefore this period is called the lag phase. . biotechnology.important. branch of Microbiology where economically valuable products are produced from cheaper raw materials by using large culture of . m.o.. Up stream and Downstream process.. Screening-Definition.. Microbiology. Outline. Microbial growth . in . natural environments. . Measurement . of . microbial population size. Principles of . microbial control. . Physical, chemical and biological control.