Journal
JOURNAL OF FOOD PROCESSING AND PRESERVATION
Volume 32, Issue 2, Pages 190-218Publisher
WILEY
DOI: 10.1111/j.1745-4549.2007.00174.x
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The effect of heating the muscle of rainbow trout at different temperatures ranging from 30 to 70C on thermal stability, texture, water-holding ability and color was investigated with regard to the possibility of discriminating between thermally treated and untreated fish muscle. Including the skin of fish it was possible to differentiate heat-treated fish in 5C steps in the range of 35-65C by means of their differential scanning calorimetry (DSC) patterns. Heating the fish muscle resulted in a marked increase in lightness with rising temperature as well as significant changes in hardness (increase) and water-holding capacity (decrease). Heating effects were compared with those of pressure treatments at 100 and 200 MPa for 20 min. The DSC patterns of both trout muscle and skin were comparable for samples that were pressure treated at 200 MPa or heated at 40C.
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