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A proper culture storage

-45 °C freezers are essential for storing frozen and freeze-dried cultures.

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Optimal storage for your cultures

Fromagex -45 °C ultra-low temperature freezers are specifically designed to meet the strict requirements of the cheesemaking industry. They provide a reliable, high-performance solution for storing frozen and freeze-dried cultures, ensuring long-term viability and quality.

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Ensuring culture activity

Storing cheesemaking cultures at -45 °C is critical to maintaining their viability and activity. At this temperature, microbial metabolism is significantly slowed, making it possible to:

Preserve pure strains without degradation

At -45 °C, microbial metabolism is virtually halted, preventing spontaneous genetic mutations. This temperature minimizes the formation of damaging ice crystals, preserving cell integrity and the specific characteristics of strains selected for cheesemaking.

Maintain high viability of lactic acid bacteria

Ultra-low storage at -45 °C allows survival rates of 90–95% after one year of storage, compared to 70–80% at -20 °C. This higher viability ensures more predictable fermentations and reduced activation times during use.

Preserve the organoleptic properties of cultures

Enzymes responsible for flavor and texture remain intact at -45 °C, ensuring that cultures produce the same sensory profiles after thawing. This stability is essential for maintaining consistency in cheese characteristics.

Ensure stable enzymatic activity upon reactivation

Storage at -45 °C minimizes damage to enzymatic systems during freeze–thaw cycles. This stability ensures enzymes regain full activity upon reactivation, supporting uniform and predictable cheese ripening.