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Extrinsic factors (Temperature of storage (Thermophilic bacteria (mainly…
Extrinsic factors
Extrinsic parameters effect both the food and microorganismsand influence the extent and rate at which microorganisms will grow.
Temperature of storage
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Every 10oC rise doubles (↑x2) the catalytic rate of enzyme and every 10oC decrease reduces it to half (↓ ½).
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Mesophilic bacteria
grow between 25oC and 40oC, with an optimum growth temperature close to 37oC
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Gaseous in Environment
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If partial pressure of carbon dioxide increases (PatmCO2 ↑) over a critical level, metabolic activity will be retarded.
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