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Elucidating Comminution Steps to Enhance the Value of Surimi from Tropical Fish

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Abstract
  • Biochemical and rheological properties of surimi were examined based on: 1) salting time (from 18 to 3 min) while maintaining 21 min for total chopping time; 2) total chopping time (from 6 to 21 min) while salting during the final 3 min. Extending salting time significantly increased breaking force and penetration distance while chopping time extension with fixed salting time did not. Salt soluble proteins decreased when salting time decreased; however, this trend performed contrarily against chopping time. A relationship between gel texture and salt soluble proteins was not found. Oxidation of sulfhydryl groups could occur during the chopping process when chopping without salt was extended. A degree of protein unfolding, as noted by surface hydrophobicity, behaved differently against chopping and salting time. Dynamic rheology demonstrated that total chopping time affected denaturation of the myosin tail region more than salting time.
  • Keywords: Protein solubility, Salting, Chopping, Threadfin bream surimi, Texture
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  • Poowakanjana, S., Park, J. D., & Park, J. W. (2015). Elucidating comminution steps to enhance the value of surimi from tropical fish. Journal of Aquatic Food Product Technology, 24(7), 698-711. doi:10.1080/10498850.2013.808302
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  • 24
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  • 7
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