Modelling O-2 and CO2 exchange for development of perforation-mediated modified atmosphere packaging

• Tipo: Artigo em Revista Científica Internacional
• Data: 2000

Autores

Fonseca, SC (Autor) Outra; Oliveira, FAR (Autor) Outra; Lino, IBM (Autor) Outra; Brecht, JK (Autor) Outra; Chau, KV (Autor) Outra

Revista

Título: Journal of Food Engineering

Vol. 43

Páginas: 9-15

ISSN: 0260-8774

Editora: Elsevier

Indexação

ISI Web of Knowledge - 85 Citações

Scopus - 94 Citações

Outras Informações

ID Authenticus: P-001-1RE

DOI: 10.1016/s0260-8774(99)00122-3

Abstract (EN): Perforation-mediated modified atmosphere packaging relies on the use of macro perforations or tubes to control the O-2 and CO2 exchange and create the desired atmosphere inside an otherwise gas-tight package. In this work, the O-2 and CO2 exchange through a single tube was studied. Different temperatures (5-20 degrees C) and tube dimensions (length from 9 to 17 mm and diameter from 6 to 30 mm) were tested. O-2 and CO2 mass transfer coefficients were determined according to a lumped mass transfer capacitance model that yielded a good description of the gas transfer. Temperature in the range tested did not show a significant effect on the mass transfer coefficients. A multiplicative non-linear equation was found to yield a good prediction of the dependence of the O-2 mass transfer coefficient on tube diameter and length. The ratio between the CO2 and O-2 mass transfer coefficients, an important parameter in the design of MAP, was 0.81 and none of the factors tested influenced its value.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7