Pasteurization temperature adjustment for boiling point variations

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SUMMARY

This discussion addresses the adjustment of pasteurization temperatures for food products at high altitudes, where water boils at lower temperatures, such as 95 Celsius. It clarifies that one should not simply reduce the pasteurization temperature by the difference in boiling points, such as lowering it to 77 Celsius. Instead, it emphasizes the importance of calibrating thermometers using boiling water at 100 Celsius and an ice/water slush at 0 Celsius, applying a two-point linear correction factor for accuracy in food safety practices.

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  • Understanding of pasteurization processes and temperature requirements
  • Knowledge of thermometer calibration techniques
  • Familiarity with food safety standards and practices
  • Basic principles of boiling point variations at different altitudes
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  • Research thermometer calibration methods for accurate temperature measurement
  • Explore the effects of altitude on boiling points and food safety
  • Learn about the two-point linear correction factor in temperature adjustments
  • Investigate food safety regulations related to pasteurization at various altitudes
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Food scientists, culinary professionals, and anyone involved in food safety and pasteurization processes, particularly in high-altitude environments.

AHVincent
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If you are at altitude and let's say water boils at 95 Celsius.

Pasteurization for an X food product is 30 minutes at 82 Celsius at sea level.

Now deductively, should I also reduce my pasteurization temperature to 82-5=77 Celsius to compensate?
 
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No. You should calibrate your thermometer with boiling water and Ice/water slush. A two point linear correction factor should be applied. If you are doing food grade work, you need to use a thermometer that will accurately measure boiling water at 100C and Ice/water slush at 0C. Accuracy costs money.
 

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