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Keywords:

  • meat proteins;
  • pork;
  • thermal transition;
  • actin

ABSTRACT

Meat myofibrillar protein (MP) gels and ground pork were used as model systems for studying thermal transition temperatures. Addition of up 2% of κ, ι, or λ carrageenan (CGN) to MP caused a very slight change in the thermal denaturation of the meat proteins. Three transition temperatures were found in ground pork samples, which were characteristic of myosin (59.4°C), sarcoplasmic proteins (67.8°C), and actin (82.4°C). Mixtures of high ionic strength had lower thermal transition peaks. CGN did not cause major shifts in transition temperatures, suggesting that molecular interactions between CGN and meat proteins did not occur.