The most common methods used either to kill or to reduce the growth of microorganism are the application of heat, the removal of water, the lowering of temperature doing storage, the reduction of pH, the control of oxygen, and carbon dioxide concentration, and the nutrients needed for growth.
Among the oldest methods of preservation are drying, refrigeration, and fermentation.
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Answer:
The most common methods used either to kill or to reduce the growth of microorganism are the application of heat, the removal of water, the lowering of temperature doing storage, the reduction of pH, the control of oxygen, and carbon dioxide concentration, and the nutrients needed for growth.
Among the oldest methods of preservation are drying, refrigeration, and fermentation.