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Type: Artigo de periódico
Title: Three-Dimensional Mathematical Modeling of Microbiological Destruction of Bacillus stearothermophilus in Conductive Baby Food Packed in Glass Container
Author: Pinho, C
Cristianini, M
Abstract: Three-dimensional mathematical model of the heat transfer during the sterilization process of a conductive baby food packed into glass container was built using the finite element technique. The heat transfer model was experimentally validated through processes carried out in water at 121 degrees C. Chi-square and regression lines were obtained for each set of temperatures generated by the model against experimental data. Thermal death parameters, D and z, of Bacillus stearothermophilus in baby food were determined. The results obtained for D value were 32.67, 9.31 and 1.57 minutes at 110, 115 and 121 degrees C, respectively. The z value obtained was 8.32 degrees C. The mass average value was also estimated and experimental processes were carried out at 110 and 115 degrees C in order to validate the microbiological destruction model. For 110 degrees C processes the differences between experimental and predicted results were less than 12% and for 115 degrees C processes these differences were less than 27%.
Subject: Mathematical modelling
finite element technique
Country: EUA
Editor: Berkeley Electronic Press
Citation: International Journal Of Food Engineering. Berkeley Electronic Press, v. 1, n. 2, 2005.
Rights: embargo
Identifier DOI: 10.2202/1556-3758.1010
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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