球形果蔬在冷藏过程中内部温度场的试验研究  

Experiment study on temperature distribution change of spherical fruits and vegetables during refrigeration process

作　　者：张敏[1] 杨乐[1] 赵惠忠[2] 陈健华[1] 卢佳华[1] 车贞花[1] 钟志友[1] 

机构地区：[1]上海海洋大学食品学院,上海201306 [2]上海理工大学环境与建筑学院,上海200093

出　　处：《河南农业大学学报》2010年第5期576-579,共4页Journal of Henan Agricultural University

基　　金：国家自然科学基金资助项目(30771245);上海市教委重点学科建设项目(J50704)

摘　　要：基于2700多通道数据计算机采集系统,将自制热电偶探针插入桃、芜菁果实中,测量其在冷藏过程中的温度场的变化.试验结果表明,被测果实内部温度在放入冷藏箱3 h后,其内外温度均低于5℃;6 h后,其整体温度为3℃;表皮最大温度波动为0.5℃,内部温度波动为0.1℃.同样环境条件下,芜菁的温度下降速度要大于桃的温度下降速度.通过试验系统可以准确地测试出冷藏过程中果实内部温度场变化分布以及达到冷藏温度所需要的时间,从而为保证冷藏过程果蔬的品质提供基础数据.Based on the model 2700 multimeter /data acquisition system,the temperature fields of peach and turnip fruit were measured by using a man-made tiny probe with five thermocouples during refrigeration process.The following conclusions were drawn by experiment： the temperature of the whole peach and turnip fruit dropped below 5 ℃ after 3 hours.After 6 hours,the whole peach and turnip fruit temperature was about 3 ℃ and the pericarp and inner temperature fluctuation were less than 0.5 ℃ and 0.1 ℃ respectively.The cooling speed of turnip fruit was faster than that of peach fruit in the same environment.This temperature testing system can measure the refrigeration temperature variation and corresponding time needed,so it can give foundations to ensure the quality of goods during refrigeration process.

关 键 词：球形果蔬 2700采集系统 微热电偶 冷藏 温度场 

分 类 号：TS255[轻工技术与工程—农产品加工及贮藏工程]