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Cuisine & technologie alimentaire

Sterilization

High-heat, high-pressure treatment that kills all microorganisms for safe long-term storage.

Definition

Heat treatment (typically 121°C at high pressure) that eliminates all microorganisms and spores, ensuring food safety and long-term preservation.

How it works

Sterilization uses autoclaving (pressurized steam at 121°C) or similar methods to eliminate all viable microorganisms including bacterial spores, which are heat-resistant. This process is essential for canning, bottling, and pharmaceutical applications. The combination of high temperature and pressure allows penetration through food matrices while ensuring sterility. Sterilization differs from pasteurization (lower temperatures) as it aims for complete microorganism elimination rather than pathogen reduction.

Role

Ensures absolute food safety and enables shelf-stable storage of low-acid foods by eliminating all microorganisms.

Examples

  • Canned goods
  • Bottled baby food
  • Medical equipment
  • Autoclaved broths
  • Sterilized infant formula

Recommendations

Use appropriate time-temperature combinations for food type and package size. Maintain equipment properly to ensure pressure and temperature accuracy. Follow approved protocols for specific foods to ensure safety.

Key takeaway

Sterilization achieves complete microorganism elimination for absolute food safety and extended shelf life.

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