Abstract
The effect of selective infrared radiation (IR) heating for the inactivation of fungal spores based on a dynamictemperature profile was explored by an integrated model that combined the thermal death kinetics with heat transfer duringIR heating. Selective IR heating was found to differentially contribute to a higher degree of lethality compared to normal IRheating. Differential heating of fungal spores was validated by demonstrating that dry fungal spores were heated by up to 6.Chigher than pure corn meal after 300 s of heating. An R2-value greater than 0.98 was observed between the model-predictedand measured survival ratios. The denaturation of protein components in the selective IR range also contributed to anadditional increase in the degree of lethality of fungal spores, compared to model prediction.
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