Question
Discuss the extrinsic factors that influence microbial growth in food.
Answer :
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Extrinsic factors are environmental conditions surrounding food that significantly influence microbial growth, survival, and activity. One of the most important extrinsic factors is temperature. Microorganisms have specific temperature ranges for growth, including minimum, optimum, and maximum limits. Psychrophiles grow at low temperatures, mesophiles at moderate temperatures, and thermophiles at high temperatures. Improper storage temperatures, especially in the danger zone (5°C to 60°C), promote rapid microbial multiplication in food. Relative humidity is another critical factor, particularly for foods stored in open environments. High humidity
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