PPT-Inhibiting Microbial Growth

in vitro CLS 212 Medical Microbiology Microbicidal or Microbistatic Microbicidal Microbicidal is the process or an agent that kills the microorganism . CLS 212: . Medical . Microbiology. Factors Affecting Microbial Growth. There . are some factors that affect and control the growth of microorganisms around us, in hospitals, in the laboratory, and in industrial settings. . in vivo. CLS 212: Medical Microbiology. Definitions. Chemotherapy. The use of any chemical (drug) to treat any disease or condition.. Chemotherapeutic Agent. Any drug used to treat any condition or disease.. in vitro. CLS 212. Microbicidal. . Microbicidal is the process or an agent that . kills. the microorganism. . The suffix . -. cidal. or . –. cide. means . ??( . See chapter 8 page 131. ). . in vivo. CLS 212: Medical Microbiology. Definitions. Chemotherapy. Chemotherapeutic Agent. Antimicrobial Agent. . Antibiotics. . Difinitions. Selective Toxicity:. The drug cause greater harm to microorganisms than to the human host.. 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. In the Environment. Table 9.1 Terminology of Microbial Control. Figure 9.1 A plot of microbial death rate.. Basic Principles of Microbial Control. Action of Antimicrobial Agents. Alteration of cell walls and membranes. 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. . Growth: . A. n . increase in cell number, not in cell size. .. Bacteria . grow and divide by binary fission, a rapid and relatively simple process. .. Phases . of Growth Bacterial Growth Curve : . When . 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. 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.. 9. Figure 9.1 A plot of microbial death rate.. Constant percentage. of the extant population. is killed each minute. Basic Principles of Microbial Control. Action of Antimicrobial Agents. Alteration of cell walls and membranes. Microbiology. Outline. Microbial growth . in . natural environments. . Measurement . of . microbial population size. Principles of . microbial control. . Physical, chemical and biological control.