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Título

Preservation of Microstructure in Peach and Mango during High-pressure-shift Freezing

Autor Otero, Laura ; Martino, M.; Zaritzky, N; Solas, M. Teresa; Sanz Martínez, Pedro D.
Fecha de publicación 2000
EditorInstitute of Food Technologists
Citación Journal of Food Science 65: 1030- 1036 (2000)
ResumenA histological technique was used to evaluate modifications on the microstructure of peach and mango due to classical methods of freezing and those produced by high-pressure-shift freezing (HPSF). With the high-pressure-shift method, samples are cooled under pressure (200 MPa) to -20°C without ice formation, then pressure is released to atmospheric pressure (0.1 MPa). The high level of supercooling (approximately 20°C) leads to uniform and rapid ice nucleation throughout the volume of the specimen. This method maintained the original tissue structure to a great extent. Since problems associated with thermal gradients are minimized, high-pressure-shift freezing prevented quality losses due to freeze-cracking or large ice crystal presence.
URI http://hdl.handle.net/10261/101204
DOI10.1111/j.1365-2621.2000.tb16029.x
Identificadoresdoi: 10.1111/j.1365-2621.2000.tb16029.x
issn: 0022-1147
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