冰温或适温条件下果蔬的高压静电保鲜研究

【作者】 刘志会；

【导师】 李里特；

【作者基本信息】 中国农业大学 ， 食品科学， 2000， 硕士

【摘要】 本论文改进了高压静电保鲜试验装置，将冰温、高压静电场及臭氧等条件相结合，对番茄、草莓、枣等果蔬的高压静电保鲜进行了较系统的研究。结果表明：高压静电场能延缓番茄、草莓、枣等果蔬的成熟；外电场方向是影响番茄高压静电保鲜效果的重要因素，方向从番茄的顶端到底部的高压静电场保鲜效果好于相反方向的电场；在9±0.5℃，85～95％，电场135kv/m，每天处理2小时的条件下，前者比后者的呼吸高峰延迟3～4天出现；高压静电场对番茄的低温冷害有一定的减轻作用；在冰温下贮藏，草莓、枣等的呼吸强度大大降低，冰温能有效延长草莓、枣等果蔬的贮藏期；冰温、电场、MA包装等对于果蔬的保鲜效果具有叠加性。更多还原

【Abstract】 The HVEF (High Voltage Electrostatic Field) experiment apparatus was redesigned. In the conditions of HVEF, controlled temperature, ozone etc. the physiological characters of tomato, strawberry and Chinese date were studied systematically. The following results were obtained: The ripening of tomatoes. strawberries and Chinese dates was delayed in HVEF; The direction of HVEF is an important factor to the preservation of tomatoes----the quality of tomatoes stored in the HVEF with the direction from top to bottom were better than those placed in the same HVEF except the opposite direction, for example, in the conditions of 9 0. 5 C, RH85 95% and treated under 35kv/rn HVEF for 2 hours per day, the respiration peak of tomatoes in the former HVEF appeared 3 days later than the latter the HVEF can alleviate the chilling of tomatoes in low temperature; In controlled temperature preservation, the respiration rate of the fruits and vegetables are decreased greatly; using the controlled temperature, HVEF and MA package together can improve the quality of the stored fruits and vegetables most effectively.更多还原