Journal
FOOD CHEMISTRY
Volume 95, Issue 3, Pages 474-483Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2005.01.024
Keywords
pressure treatment; muscle; thermal gelation; chicken myofibril; pork patty
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The structures and characteristics of pressure-heat-induced gels of chicken myofibrils and pork patty were investigated. The Wine and Z-line in the chicken myofibril in 0.2 M NaCl were disrupted, and both of the thin and thick filaments were dissociated by pressure treatment. The microstructure of pressure-heat-induced chicken myofibrillar gel was composed of three-dimensional fine strands. Pressurization, at 200 MPa, prior to heating, increased the apparent elasticities of chicken myofibrillar gel and pork patty; however, pressure treatment above 200 MPa decreased it. The apparent elasticity of the pressure-treated (200 MPa) thermal myofibrillar gel was three times higher, and that of pork patty was twice higher than those of the unpressurized ones. The theological properties of the low salt (1% NaCl) pork sausage can be improved by pressure treatment at 200 MPa prior to heating. (c) 2005 Elsevier Ltd. All rights reserved.
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