Physicochemical properties of actomyosin from bighead carp during heat-treatment were investigated. Turbidity, solubility, and surface hydrophobicity showed significant changes from 40–55°C (P < 0.05). Heat-treatment before 45°C could make actomyosin unfold, and the disulfide bonds were formed at temperatures above 45°C. Three enthalpy transitions at 41.2, 61.7, and 63.4°C were found in differential scanning calorimetry thermogram of bighead carp actomyosin. Storage modulus (G′) increased gradually and reached the first peak at 36.5°C and the second peak at 50°C. Myosin suffered conformation changes and lead to aggregation during the heating period.
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You et al. (2011) studied this question.
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