Question: A thermal process is being used to reduce the microbial population on product contact surfaces of the packages needed for the aseptic packaging of the

  • A thermal process is being used to reduce the microbial population on product contact surfaces of the packages needed for the aseptic packaging of the liquid product. The spoilage microorganism has a D121 = 10min and a z = 8°C. The microbial population on the surface is 100 per cm2 and the product contact surface area is 8cm2 for each package. A 9D process has been recommended. a. Determine the processing time for the containers at 140°C. b. Estimate the number of containers with spoilage based on survivors on the package surface when 10 million packages have been filled.

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