6 Methods Of Physical Control Of Microorganisms
6 Methods Of Physical Control Of Microorganisms. The thermal death point (TDP) of a microorganism is the lowest temperature at. Microwaves induce water molecules to vibrate at high rates, creating heat.
Understand and compare various physical methods of controlling microbial growth, including heating, refrigeration, freezing, high-pressure treatment, desiccation, lyophilization, irradiation, and filtration. Heat is fast, reliable, and relatively inexpensive, and it does not introduce chemicals to a A visit to any supermarket will demonstrate that heat preserved canned goods represent one of the most common methods of food preservation. A method of expressing efficacy is the phenol coefficient.
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Pure cultures are frozen instantaneously and exposed to a vacuum that removes water, avoiding the formation of ice.
The killing effect of heat on microorganisms has long been known. There are two main methods of controlling microorganisms: physical methods and chemical methods. High temperatures combined with high moisture is one of the most effective methods of killing microorganisms.
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