Changes in quality of Liaoning Zhuanghe Dagu chicken jerky at different storage temperatures and establishment of shelf life prediction model
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1.Medical College of Jinzhou Medical University, Jinzhou, Liaoning 121010, China;2.School of Food and Health, Jinzhou Medical University, Jinzhou, Liaoning 121001, China

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    Abstract:

    Objective To investigate the changes in the quality of Dagu chicken jerky during storage at different temperatures and establish a shelf-life prediction model based on thiobarbituric acid reactive substance (TBARS) value and colony count.Methods The Dagu chicken jerky was stored at 4, 25, and 37 ℃, and the changes in pH value, total volatile basic nitrogen (TVB-N), TBARS value, acid value (AV), color, texture, sensory characteristics, and colony count were measured. The Arrhenius equation was used to establish a shelf-life kinetic model of Dagu chicken jerky, with colony count, TBARS value, and TVB-N value as quality indicators.Results After being stored at three different temperatures for 42 days, the Dagu chicken jerky showed a decrease and then an increase in pH value. The sensory score and L* value showed a downward trend. The colony count, AV, TBARS value, a* value, and b* value all showed an upward trend, and the hardness and elasticity gradually decreased. The activation energies for the colony count, TBARS value, and TVB-N value of Dagu chicken jerky were 24 719.859 0 kJ/mol, 18 027.872 2 kJ/mol, and 21 092.791 0 kJ/mol, respectively, and the pre-exponential factors (k0) were 1 375.950 4, 30.244 1, and 898.026 9, respectively. After verification, the relative error of the prediction model with TBARS value as the quality indicator was greater than 10%, while the relative error of the prediction model with colony count and TVB-N value as the quality indicator was within ±10%, showing a good prediction effect.Conclusion The prediction model with colony count and TVB-N value as the quality indicator can effectively predict the shelf-life of Dagu chicken jerky stored at temperatures ranging from 4 ℃ to 37 ℃.

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金娜,颜瑞池,苏玉虹,等.不同贮藏温度下辽宁庄河大骨鸡肉干品质变化及货架期预测模型的建立[J].食品与机械英文版,2025,41(10):100-111.

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History
  • Received:November 30,2024
  • Revised:August 31,2025
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  • Online: November 20,2025
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