面向冷链物流农产品品质感知的TTI动态校准方法

发布时间：2018-04-22 01:39

本文选题：农产品 + 品质　；参考：《农业机械学报》2017年02期

【摘要】：时间-温度指示器(TTI)是一种可以跟踪冷链物流温度历程的智能装置,可以指示相应的农产品品质。但现有的TTI匹配条件在一定程度上限制了TTI的应用范围,即使TTI满足了传统匹配条件的要求,但应用效果也会受到农产品采收品质波动的影响。通过使用反应动力学方程和等量线方法,在原有的匹配过程中引入了TTI的校准过程,并借此推导TTI匹配所需的基本条件,以及校准过程所需的参数。结果表明,TTI匹配性判断所需的基本条件仅为农产品品质与TTI的反应活化能相等,或两者等量线存在比例关系。在此前提下,利用公式推导或等量线的绘制过程,可以求得静态校准和动态校准时所需的相关参数,经过校准后的TTI即可与对应的食品完成匹配。校准过程的引入可以显著扩大TTI的适用范围。除此之外,动态校准模型还可以缩小处于变化中的TTI和农产品对应品质之间的差值,提高TTI指示货架期的精确性。最后,通过使用两种酶型TTI、两种不同激活条件的化学型TTI和玫瑰香葡萄进行验证实验,实验结果证明经过合理校正之后TTI的等量线普遍与玫瑰香葡萄的品质等量线更接近,对其指示效果精准。
[Abstract]:Time-temperature indicator (TTI) is an intelligent device that can track the temperature history of cold chain logistics and indicate the quality of agricultural products. However, the existing TTI matching conditions limit the application range of TTI to some extent. Even if TTI meets the requirements of traditional matching conditions, the application effect will also be affected by the fluctuation of harvest quality of agricultural products. By using the reaction kinetics equation and the isometric method, the calibration process of TTI is introduced into the original matching process, and the basic conditions for TTI matching and the parameters required for the calibration process are derived. The results showed that the basic condition for TTI matching was that the quality of agricultural products was equal to the reaction activation energy of TTI, or that there was a proportional relationship between them. On this premise, the parameters needed for static and dynamic calibration can be obtained by formula derivation or drawing process of isometric line. The calibrated TTI can be matched with the corresponding food. The introduction of the calibration process can significantly expand the scope of application of TTI. In addition, the dynamic calibration model can reduce the difference between the changing TTI and the corresponding quality of agricultural products, and improve the accuracy of TTI indication shelf life. Finally, by using two enzyme types of TTI, two chemical types of TTI and rosy grape with different activation conditions, the experimental results show that the isobaric lines of TTI are generally closer to the quality isobaric lines of rosy grapes after reasonable correction. The indication effect is accurate.
【作者单位】：中国农业大学工学院;中国农业大学食品质量与安全北京实验室;河南大学药学院;
【基金】：国家自然科学基金项目(31371538) 教育部新世纪优秀人才项目(NCET-11-0491)
【分类号】：TQ914

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