Development of distribution system for managing safety and high quality of fresh fruit and vegetables

为了开发一种新的生鲜农产品安全和高质量的配送系统，开展了以下研究：(1)红外和紫外线照射对微生物的灭活；(2)新鲜水果和蔬菜在配送过程中的质量预测；(3)配送过程中微生物生长预测模型的建立；(4)装满生鲜农产品的冷藏卡车运输过程中温度分布的CFD预测。结果表明：接种孢子悬浮液的平板培养基表面温度影响微生物在紫外光照射下的存活率；建立的数学模型成功地预测了L-ASA和花环菊花中总糖含量的变化；用改进的Gompertz模型预测的微生物生长曲线与实验值吻合；利用CFD对冷藏车上装茄子果实的温度进行了一定程度的预测。

To develop a new distribution system for managing safety and high quality of fresh produces, following researches were conducted : (1) inactivation of microbe irradiated by IR and UV ; (2) prediction of quality of fresh fruit and vegetables during distribution ; (3) development of prediction model for microbial growth during distribution ; (4) CFD prediction of the temperature distribution within a refrigerated truck filled with fresh produces during transport. As a result, following findings were obtained : surface temperature of plate medium inoculated with spore suspension affected survival rate of microbe at UV was irradiated onto the surface ; a developed mathematical model successfully predicted change in L-AsA and total sugar content in garland chrysanthemum ; microbial growth curve predicted by modified Gompertz model agreed with experimental value ; it might be possible to make predictions of eggplant fruit temperature loaded onto a refrigerated truck to some extent by means of CFD.