GIFSQ Tools · Module 10 — Packaging & Shelf-Life · Tool 196 of 500
Predict shelf life at a new temperature with the Q10 rule: the spoilage rate multiplies by Q10 for every 10 °C rise.
Try sample values — fills the form with the worked example below.
–
Acceleration factor
–
Shelf life at new temperature (days)
–
Change (%)
Equation: Acceleration factor = Q10^((T₂ − T₁) ÷ 10). Shelf life at T₂ = shelf life at T₁ ÷ acceleration factor. Change (%) = (life₂ − life₁) ÷ life₁ × 100.
Method: Q10 temperature model: a simple rule of thumb that the reaction rate multiplies by a fixed factor Q10 for each 10 °C rise, widely used for quick shelf-life estimates.
Assumptions: the same spoilage reaction dominates at both temperatures, with a constant Q10 across the range.
Limitations: Q10 is a rough rule, not a law — real Q10 values vary with temperature and product, so confirm any estimate with a real-time or accelerated study before setting a date.
Rounding: factor to 2 decimal places; shelf life to 2 decimal places; change to 2 decimal places; intermediates unrounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Method: Q10 temperature model: a simple rule of thumb that the reaction rate multiplies by a fixed factor Q10 for each 10 °C rise, widely used for quick shelf-life estimates.
Assumptions: the same spoilage reaction dominates at both temperatures, with a constant Q10 across the range.
Limitations: Q10 is a rough rule, not a law — real Q10 values vary with temperature and product, so confirm any estimate with a real-time or accelerated study before setting a date.
Rounding: factor to 2 decimal places; shelf life to 2 decimal places; change to 2 decimal places; intermediates unrounded.
This is a calculation aid, not a laboratory report — confirm against your accredited method before citing a value.
Worked example: Q10 2, 180 days at 4 °C, warmed to 24 °C: factor = 2^((24 − 4) ÷ 10) = 4.00; shelf life = 180 ÷ 4 = 45.00 days (−75.00%).
Enter values above to see results.
Common Q10 values: 2–3 for most food spoilage; use the value measured for your own product where possible. Tool 196 of 500 — GIFSQ
