Construction of quality change and oxidation kinetics model of lard during storage
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(1. College of Food Science and Technology, Henan Agricultural University, Zhengzhou, Henan 450002, China; 2. Henan Shuanghui Investment & Development Co., Ltd., Luohe, Henan 462000, China)

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    Abstract:

    Objective: In order to understand the influence of different storage temperatures on lard oxidation, a temperature-based lard oxidation kinetic model was constructed to realize the rapid prediction of temperature-based lard quality. Methods: Stored the lard at 50, 60, 70 ℃. During lard storage, the peroxide value (POV) of lard fat, Thiobarbituric acid value (TBARs) and acid value (acid value, AV) and other indicators were regularly measured, and the oxidation kinetic model between each indicator and storage temperature and storage time was established. Results: Under the same temperature, the oxidation degree of lard deepened with the increase of time, and the oxidation rate increases with the increase of temperature; the changes of lard peroxide value, thiobarbituric acid value and acid value in the reaction were more consistent with one another. First-order kinetic model, the activation energies obtained by Arrhenius equation were 15.718 2, 21.255 0, and 2.299 6 kJ/mol, respectively. The model verifies that the correlation coefficient between the actual measured value and the predicted value was relatively high. Conclusion: During the storage of lard at different temperatures, its oxidation deepens to varying degrees with time. A model that can quickly evaluate and predict the degree of oxidation of lard in different temperature ranges has been established, and the lard should be stored as low as possible during the process of lard storage.

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刘姗姗,沈玥,黄现青,等.不同贮藏温度下猪油品质变化及氧化动力学模型构建[J].食品与机械英文版,2021,37(12):113-120.

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History
  • Received:June 21,2021
  • Revised:
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  • Online: February 15,2023
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