Thermal Conductivity of Surimi–Measurement and Modeling

Authors


  • The authors thank Charles Crapo, Fishery Industrial Technology Center in Kodiak, Alaska, for his assistance in procuring samples.

  • This work is the result of research sponsored by Oregon Sea Grant with funds from NOAA, office of Sea Grant, Dept. of Commerce, under Grant No. NA85AA-D-SG095 (project no. R/PD-50) and from appropriations made by the Oregon State Legislature. The U.S. Government is authorized to produce and distribute reprints for governmental purposes, notwithstanding any copyright notation that may appear hereon.

ABSTRACT

To measure temperature-dependent thermal conductivity of surimi, a line-source probe system was developed. Effects of test conditions and sample history were investigated. Thermal conductivity of Alaska pollock surimi having 0, 4, 6, 8, and 12% cryoprotectant levels was measured in the range -40 to 30°C. Thermal conductivity of surimi has a relatively weak dependence upon cryoprotectant level when water content of the sample is controlled at 80.3%. From measured data, the Schwartzberg model and its modification were selected for future prediction. Three parameters in the model, Ti, B, and K′f had a linear variation with cryoprotectant concentration.

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