Registro completo |
Provedor de dados: |
116
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País: |
Brazil
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Título: |
Air blast freezing of fruit pulp models in commercial boxes: influence of preferential channels in the bed on freezing times estimating
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Autores: |
Resende,Jaime Vilela de
Silveira Jr.,Vivaldo
Neves Filho,Lincoln de C.
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Data: |
2002-12-01
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Ano: |
2002
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Palavras-chave: |
Freezing times
Frozen foods
Heat transfer
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Resumo: |
The freezing times of fruit pulp models packed and conditioned in multi-layered boxes were evaluated under conditions similar to those employed commercially. Estimating the freezing time is a difficult practice due to the presence of significant voids in the boxes, whose influence may be analyzed by means of various methods. In this study, a procedure for estimating freezing time by using the models described in the literature was compared with experimental measurements by collecting time/temperature data. The following results show that the airflow through packages is a significant parameter for freezing time estimation. When the presence of preferential channels was considered, the predicted freezing time in the models could be 10% lower than the experimental values, depending on the method. The isotherms traced as a function of the location of the samples inside the boxes showed the displacement of the thermal center in relation to the geometric center of the product.
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Tipo: |
Info:eu-repo/semantics/article
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Idioma: |
Inglês
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Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612002000300021
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Editor: |
Sociedade Brasileira de Ciência e Tecnologia de Alimentos
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Relação: |
10.1590/S0101-20612002000300021
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Formato: |
text/html
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Fonte: |
Food Science and Technology v.22 n.3 2002
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Direitos: |
info:eu-repo/semantics/openAccess
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