切片莲藕臭氧保鲜呼吸模型的研究

为了研究臭氧保鲜包装理论，根据果蔬呼吸作用与薄膜透气特性的相互关系，建立了以臭氧作为保鲜气体的果蔬呼吸数学模型，并以切片莲藕作包装物、聚乙烯尼龙复合（PA/PE）膜作包装袋为例，利用遗传算法（GA）对呼吸模型中的参数进行了识别。另外，根据已建立的呼吸模型，通过仿真模拟出不同温度条件下袋内气体浓度的变化。结果表明7.5℃下模拟值与实测值能够很好地吻合，从而模拟值可为臭氧对果蔬保鲜包装设计提供理论指导。

Respiration model for lotus root slices under ozone fresh-keeping conditions

In order to study the theory of ozone preservation, according to the relationship between the respiration of fruits and vegetables and the permeability of film, the respiration model was established in pack which used ozone as the fresh atmosphere. Package bag with composite film PA/PE containing lotus root slices was taken as example, and the model parameters were identified by genetic algorithm (GA). In addition, the changes of gaseous concentration in package bag at different temperatures were simulated. The results show that the simulative value and actual value can be well matched, thus the simulative value can provide academic guidance for the design of fresh-keeping and package for fruits and vegetables based on ozone.