Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6756
Título: Influence of the variability of processing factors on the F-value distribution in batch retorts
Autor: Varga, Szabolcs
Oliveira, Jorge C.
Oliveira, Fernanda A.R.
Palavras-chave: Conduction heating
Finite elements
Monte Carlo simulation
In-pack sterilisation
Data: 2000
Editora: Elsevier
Citação: VARGA, Szabolcs; OLIVEIRA, Jorge C.; OLIVEIRA, Fernanda A. R. - Influence of the variability of processing factors on the F-value distribution in batch retorts. Journal of Food Engineering. ISSN 0260-8774. Vol. 44 (2000), p. 155-161
Resumo: The F-value distribution in a batch retort processing of in-pack conduction heating foods resulting from the variability of four processing factors (initial temperature, heating time, headspace and external heat transfer coe cient) was determined by mathematical modelling. Three hundred combinations were generated from normally distributed values for each factor, following the Monte Carlo approach. The retort temperature was assumed the same for all containers and the F-value at the geometrical centre of containers of di erent dimensions was calculated by solving the governing heat transfer equations using ®nite elements. It was found that in the range tested the variability of the heating time and of the external heat transfer coe cient had the biggest impact on the F-value distribution and that the head space variability had a negligible impact. It was also found that although each in¯uencing factor had a normal distribution, the F-value distribution was not normal, showing a signi®cant tailing, being well described by a gamma function
Peer review: yes
URI: http://hdl.handle.net/10400.14/6756
Versão do Editor: doi:10.1016/S0260-8774(99)00174-0
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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