Liha töötlemine
dt
these are C. prefringens, Salmonella spp.,
Staphylococcus spp., and Campylobacter This means that cell concentration (dc)
spp. Microbial inactivation calculations are decreases (hence, the negative sign) with
based on how long the food shelf life must time (dt) in a direct proportion to viable cell
be extended. concentration (c). This is a logarithmic cell
Sporulated thermophiles must also be destruction rate (for example: 103 to 102), but
considered if the food will be stored at high time increases linearly.
340 Chapter 19
As mentioned before, another heat treat- A = area of transference
ment objective is enzyme inactivation; meat ΔT = temperature difference
enzymes (endogenous and exogenous) play L = thickness of the material
annaabi.ee 
