(30 Marks) Q4: A liquid food in a can is being processed in a retort with...

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(30 Marks) Q4: A liquid food in a can is being processed in a retort with temperature history data given below. The can dimensions are 8.5 cm in diameter and 10.7 cm in height. The liquid food is being filled up to 90% of the container volume. The product has a density of 1235 kg/m³ and 1.4819x104/g initial microorganism count. Laboratory tests established that D₁21 0,6 minute and z 10°C for the microorganism. A process is desired that will assure that spoilage occurs in less than one container per 100000. Temperatures obtained from the container cold point are as follows: ● . ● Draw a graph related with lethal rate and processing time, Calculate total lethality of the processing, Is the total lethality achieved desired microorganism reduction after the thermal process? If not, calculate the minimum holding time needed at 125 °C to achieve the desired result. 8.5 cm 10.7 cm Time (min) 0 3 5 8 11 13 14 15 17 19 20 Temperature (°C) 57 75 95 112 117 121 119 110 85 60 45 (30 Marks) Q4: A liquid food in a can is being processed in a retort with temperature history data given below. The can dimensions are 8.5 cm in diameter and 10.7 cm in height. The liquid food is being filled up to 90% of the container volume. The product has a density of 1235 kg/m³ and 1.4819x104/g initial microorganism count. Laboratory tests established that D₁21 0,6 minute and z 10°C for the microorganism. A process is desired that will assure that spoilage occurs in less than one container per 100000. Temperatures obtained from the container cold point are as follows: ● . ● Draw a graph related with lethal rate and processing time, Calculate total lethality of the processing, Is the total lethality achieved desired microorganism reduction after the thermal process? If not, calculate the minimum holding time needed at 125 °C to achieve the desired result. 8.5 cm 10.7 cm Time (min) 0 3 5 8 11 13 14 15 17 19 20 Temperature (°C) 57 75 95 112 117 121 119 110 85 60 45

Answer rating: 100% (QA)

T 0 60C T f 120C T 125C h 500wm 2 c A 4d 2 4 x 4100 2 ... View the full answer