7 control of microbial growth

Terminology ,[object Object],[object Object],[object Object],[object Object],[object Object]

Terminology cont’d ,[object Object],[object Object],[object Object],[object Object],[object Object]

Terms used: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

cidal vs. static ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Methods of control ,[object Object],[object Object],[object Object],[object Object],[object Object]

Methods of control cont’d ,[object Object],[object Object],[object Object],[object Object],[object Object],mechanical Mechanical and chemical

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Methods of control cont’d

[object Object],[object Object],[object Object],[object Object],Methods of control cont’d

[object Object],[object Object],[object Object],[object Object],[object Object],Methods of control cont’d

Selection of Control Method ,[object Object],[object Object],[object Object],[object Object],[object Object]

Selection of Control Method cont’d ,[object Object],[object Object],[object Object],[object Object],Mycobacterial cell wall: 1-outer lipids, 2-mycolic acid, 3-polysaccharides (arabinogalactan), 4-peptidoglycan, 5-plasma membrane, 6-lipoarabinomannan (LAM), 7-phosphatidylinositol mannoside, 8-cell wall skeleton

[object Object],[object Object],[object Object],[object Object],[object Object],Selection of Control Method cont’d

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Selection of Control Method cont’d Must be cleaned first, then controlled

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Selection of Control cont’d

Selection of Control cont’d ,[object Object],[object Object],[object Object]

Methods to Control Microbial Growth

Physical Microbial Controls: Heat ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Heat cont’d

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Heat cont’d

The autoclave: Moist heat and pressure ,[object Object],[object Object],[object Object],[object Object]

Temperature of steam and Pressure at sea level

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Heat cont’d

Physical Microbial Controls: Filtration ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Filtration cont’d

[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Filtration cont’d

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Radiation

[object Object],[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Radiation cont’d

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Physical Microbial Controls: Radiation cont’d

[object Object],[object Object],[object Object],Physical Microbial Controls: Radiation cont’d

Physical Methods used to control Microbial growth

[object Object],[object Object],[object Object],[object Object],[object Object],Chemical Microbial Control cont’d

Chemical Control ,[object Object],[object Object],[object Object]

chemical control cont'd ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Selecting Germicidal Chemical ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Selecting germicidal Chemical cont'd ,[object Object],[object Object],[object Object],[object Object],[object Object]

Classes of Germicidal Chemicals ,[object Object],[object Object],[object Object],[object Object],[object Object]

Classes of Germicidal Chemicals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Classes of Germicidal Chemicals cont’d ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Classes of Germicidal Chemicals cont’d ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Effect of germicidal activity on Microbes

Chemical methods of microbial control ,[object Object],[object Object]

Preservation of Perishables ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Preservation of Perishables

Preservation of Perishables ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Preservation of Perishables Salt cured meat

[object Object],[object Object],[object Object],[object Object],Preservation of Perishables

Factors that influence effectiveness ,[object Object],[object Object],[object Object],[object Object]

Limitations: Microbial Characteristics

Actions of Microbial Control Agents ,[object Object],[object Object],[object Object]

Questions???? Sand rich in salts n nitrates preserved mummy

7 control of microbial growth

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7 control of microbial growth