不同贮藏温度下猪油品质变化及氧化动力学模型构建
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(1. 河南农业大学食品科学技术学院,河南 郑州 450002;2. 河南双汇投资发展股份有限公司,河南 漯河 462000)

作者简介:

刘姗姗,女,河南农业大学在读硕士研究生。

通讯作者:

黄现青(1977—),男,河南农业大学教授,博士生导师,博士。E-mail:hxq8210@126.com

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国家自然科学基金(编号:U1504331)


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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    摘要:

    目的:了解贮藏温度对猪油氧化的影响规律。方法:将猪油分别于50,60,70 ℃下贮藏,测定贮藏过程中猪油的过氧化值、硫代巴比妥酸值和酸价等,并建立各个指标与贮藏温度和贮藏时间之间的氧化动力学模型。结果:随着贮藏时间的延长,猪油的氧化程度加深,贮藏温度越高,氧化速率越快;贮藏过程中猪油的过氧化值、硫代巴比妥酸值和酸价变化均符合一级动力学模型,通过阿伦尼乌斯方程求得其活化能分别为15.718 2,21.255 0,2.299 6 kJ/mol,模型验证实际测量值与预测值相关系数较高。结论:不同贮藏温度下,猪油的氧化程度随贮藏时间的延长而不同程度加深,建立的氧化动力学模型可以快速评估和预测猪油的氧化程度,且猪油应尽量低温贮藏。

    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,2021,37(12):113-120.
LIUShanshan, SHENYue, HUANGXianqing, et al. Construction of quality change and oxidation kinetics model of lard during storage[J]. Food & Machinery,2021,37(12):113-120.

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  • 收稿日期:2021-06-21
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  • 在线发布日期: 2023-02-15
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