The effect of calcium compounds during three thermal treatments with or without setting was studied. Formation of cross-linking was investigated using SDS-PAGE. Solubility varied. Calcium acetate, chloride, and caseinate were extremely soluble. Calcium lactate had good solubility at 0.2% or higher, then in descending order were phosphate, citrate, sulfate, and carbonate. Effects of temperature on solubility were not measurable except for caseinate. When 25°C setting was applied to surimi, calcium was most effective. Effect of calcium on shear stress was dependent on species, setting temperature, and specific compound. SDS-PAGE indicated that improved gel functionality was likely due to Ca ++ -dependent transglutaminase. Shear strain values were not affected by adding calcium compounds regardless of species or thermal treatments.
In this study, the alkiline water washing condition of mackerel(Scomber japonicus) dark meat was investigated to improve processing conditions of red muscle fish meat paste heating gel. Chemical alkaline water(CWM) and electrolytic alkiline water(EWM, pH 12) were used for washing the mackerel raw meat. Washed meats were minced with 2.5% salt and heated at 90℃/15 min to testing texture profile analysis. Moisture of CWM and EWM was increased with both washing times(p<0.05). Crude lipids and protiens were decreased with washing times. Lightness of chemical alkaline water washed mackerel heated paste gel(CWHPG) was higher than electrolytic alkaline water washed mackerel heated paste gel(EWHPG). Redness and yellowness were more decreased than control meats. Jelly strength of CWHPG and EWHPG was not increased more than 2 times wased meat and was increased with protein decrease. Texture profile analysis, max force1 of CWHPG and EWHPG was higher hardeness than the control meat except gel strains. From these results, it could be suggested that electric alkialine water washing is also effective in advance the red meat paste heating gel process of kamaboko industry.
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