Food & Drink Processing & Packaging Issue 64 2026 | Page 16

Efficient Accurate Cook CCP validation with full Pu Analysis

As part of any Food processors HACCP program validation of cook and chill processes is a critical and significant task taking time, effort, and resources.
PhoenixTM have developed a thruprocess temperature monitoring technology specifically for this task designed to meet the challenges of the food processing market. Ideal for the validation process for any new cook regime, new product, or annual process certification.
From a temperature profile it is possible to accurately quantify product safety( pasteurisation) knowing both the temperature, and time at temperature, of the product.
The Pasteurisation Value( Pu) is the equivalent cook time for the temperature profile at the nominated reference cook temperature. Basically, the calculation converts each data point in the profile trace to an equivalent time at the reference temperature which is then summed. The Pu value( mins) is divided by the decimal reduction time to give the resulting number of log / decimal reductions in the micro-organism population. Many processors look for a minimum lethality of 6 log. For LMono( listeria monocytogenes) the minimum target Pu is therefore 6 log x 16.2 s( Dt) = 1.62 mins which is rounded up to 2 mins hence the specification 70 ° C / 158 ° F for 2 mins. reductions achieved by the cook profile to quickly determine whether the Cook Critical Control Point( CCP) has been achieved. The lethality results can be viewed either numerically or graphically.
The lethality calculation gives you the accuracy you need to prove food safety. At the same time the confidence to potentially reduce cook time or temperature to improve productivity, yield, and quality without compromising safety.
Contact PhoenixTM to help Find, Fix and Forget your Food Cook Problems! further Information www. phoenixtm. com
The PhoenixTM system is offered with a custom designed software package, Thermal View Food software. The software allows setup and control of the data logger but also full review and analysis of the profile data collected. As part of the comprehensive analysis suit the software provides recognised and approved lethality calculations allowing quantification of food cook safety. For a specific target microorganism, the software will calculate Fo / Pu and or number of log / decimal
16 FDPP- www. fdpp. co. uk