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An empirical model to estimate the growth of ice crystals for storage of Tilapia at variable temperature conditions 116
GUTIÉRREZ,Mirko Salomón Chávez; ARAÚJO,Luciares Costa de; SILVEIRA JÚNIOR,Vivaldo.
Abstract Empirical models can be used to represent the recrystallization process in frozen food as a simple strategy (limited by the complexity of the process). Anyway, the empirical model has a better fit when used within the range of experimental values from which they were generated. In this work, an empirical mathematical model derived from the Arrhenius equation was proposed, since in previous publications it was shown that there is a direct relation between the growth of ice crystals and the temperature oscillations that occur during the storage of frozen products. Equivalent diameter data of ice crystals obtained from the storage of frozen Tilapia analyzed in the optical microscope was used as a database for the formulation of the empirical model....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Empirical model; Arrhenius model; Recrystallization; Temperature oscillations.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000300567
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Limit growth of ice crystals under different temperature oscillations levels in nile Tilapia 116
GUTIÉRREZ,Mirko Salomon Chávez; OLIVEIRA,Cintia Melgaço de; MELO,Fernanda Ramos; SILVEIRA JÚNIOR,Vivaldo.
Abstract The degenerative effect of temperature fluctuations during storage time is a critical condition that needs to be quantitatively characterized in products where drip losses are appreciable. In this work, real storage conditions were reproduced using freezers modified to cause 3 levels of temperature fluctuation (± 0, ± 3, ± 5; ± 7) during storage of Tilapia (Oreochromis sp), at temperature of –18 °C. The fast frozen tilapia muscle (freezing cabinet) was chosen to quantify the growth of ice crystals according to temperature fluctuations. The identification of crystals in the optical microscope as well as histological treatments and measurements using specific software has shown that the growth of ice crystals in the first days of storage follows an...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freezing; Recrystallization; Cold chain; Temperature oscillations.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000400673
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