Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/5496
Título: Experimental validation of models for predicting optimal surface quality sterilization temperatures
Autor: Silva, Cristina L. M.
Oliveira, Fernanda A.R.
Lamb, Jack
Torres, Andreia Pinheiro
Hendrick, Marc
Palavras-chave: Canning processing
Chemical indicator
Food quality optimization
Time-temperature integrator
Thermal processing
Data: 1994
Editora: Wiley Blackwell
Citação: SILVA, Cristina L. M... [et al.] - Experimental validation of models for predicting optimal surface quality sterilization temperatures. International Journal of Food Science & Technology. ISSN 1365-2621. Vol. 29, n.º 3 (1994), p. 227-241
Resumo: An experimental procedure was developed to validate experimentally the theoretical optimal process temperatures giving the maximum quality at the surface of conduction heating products for specified levels of sterility. the method involved filling a can with a 10% bentonite solution, placing glass capillaries containing a food quality indicator at the surface, and processing it at different temperatures for the necessary time in order to attain a specified sterility value at the least-lethality point. the acid catalysed sucrose hydrolysis reaction was used as a chemical time-temperature-integrator for a quality index of heat sterilized products. At a pH of 3.8, the kinetic parameters D121.15°C ard z values of this reaction, were 214min and 31°C, respectively. Final surface retentions of sucrose compared well with theoretically predicted values from simulation modelling. Optimal temperatures calculated using either numerical computer optimization or generalized regression equations were in the range of experimentally determined optimal conditions.
Peer review: yes
URI: http://hdl.handle.net/10400.14/5496
Versão do Editor: The definitive version is available at http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2621.1994.tb02065.x/abstract
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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