气调冷藏集装箱对蔬菜贮藏的保鲜效果

Effect of Air-conditioned Refrigerated Container on Preservation of Vegetables

为探讨气调冷藏集装箱的保鲜效果,以常见蔬菜小白菜、油麦菜、芹菜、菠菜为试材,在1℃条件下,分别用气调冷藏集装箱与普通冷库贮藏,气调环境为5%±1%O_(2)、95%±1%N_(2),相对湿度为90%±5%,乙烯脱除模块每天凌晨脱除0.5 h,臭氧杀菌模块每天灭菌一次,浓度2 g·min^(-1),时间是10 min,而普通冷库除冷藏外不再增加其他措施。通过测定贮藏期间蔬菜的失重率、可溶性固形物、可滴定酸、抗坏血酸、呼吸强度、丙二醛、叶绿素指标,评价设备保鲜性能。结果表明,与普通冷库相比,在45 d贮藏期内,气调冷藏集装箱明显能有效防止蔬菜水分的散失,维持较高的可溶性固形物、可滴定酸含量,在一定程度上抑制了果蔬的呼吸作用,降低抗坏血酸、叶绿素的消耗,减轻叶片细胞膜质过氧化的程度,能有效延缓蔬菜腐烂变质的时间,保持蔬菜较好的贮藏品质。因此,气调冷藏集装箱对大批量蔬菜的贮藏具有良好的应用前景。

In order to study the fresh-keeping effect of air-conditioned refrigerated container,both the air-conditioned refrigerated container and common cold storage were used to preserve fresh vegetables(pakchoi,leaf lettuce,celery and spinach)under 1℃.The controlled atmosphere was 5%±1%O_(2),95%±1%N_(2),and the relative humidity was 90%±5%.The ethylene removal module runned for half an hour every morning,and the ozone sterilization module worked for 10 minutes once a day,with the concentration of 2 g·min^(-1).While,there were no other measures for common cold storage in addition to cold storage.The indicators of the weight loss rate,soluble solids content,titratable acid content,V_(C),respiration intensity,MDA and chlorophyll content were investigated to evaluate the preservation performance of the equipment.The results showed that during 45 d storage period,the air-conditioned refrigerated container performed better on effectively preventing vegetables weight loss,maintaining high soluble solids and titratable acid content,inhibiting the respiration intensity of vegetables,reducing the consumption of V_(C) and chlorophyll,also relieving the degree of cell membrane peroxidation in leave.Furthermore,it can effectively retard the corruption of vegetable and maintain the fresh quality of vegetables.In conclusion,air-conditioned refrigerated container has a better application prospect for storage of large quantities of vegetables.