泡沫箱结合薄膜包装对小白菜保鲜效果的影响  

Effect of Foam Box Combined with Film Packaging on the Freshness Quality of Pakchoi

作　　者：周俞含 吴姗鸿 骆佳 廖雯 舒丽洁 张敏[1] ZHOU Yu-han;WU Shan-hong;LUO Jia;LIAO Wen;SHU Li-jie;ZHANG Min(College of Food Science,Southwest University,Chongqing 400715,China)

机构地区：[1]西南大学食品科学学院,重庆400715

出　　处：《包装工程》2023年第15期52-59,共8页Packaging Engineering

摘　　要：目的 探究采用泡沫箱与薄膜包装结合的方式对常温物流小白菜的保鲜作用,分析泡沫箱阻隔性对小白菜保鲜包装薄膜厚度选择所产生的影响。方法 以小白菜为实验对象,分别在有无泡沫箱2种情况下,采用厚度为20、40、60、80、100μm的聚乙烯(polyethylene,PE)袋包装,探究不同包装对小白菜保鲜的效果。结果 泡沫箱对气体的阻隔性会影响包装内部氧气的含量,有无泡沫箱对内包装膜厚度的选择有所不同。采用无泡沫箱时选择60μm的PE膜,采用有泡沫箱时选择40μm的PE膜,均可有效控制顶空气体的比例,使小白菜的感官品质达到最佳。此外,泡沫箱外包装的存在能够使小白菜提早4 d进入稳定保鲜气体环境,更有利于维持较好的商品性。无论是否采用泡沫箱,80μm和100μm的PE膜都极易导致小白菜因无氧呼吸而快速腐烂,直至商品性完全丧失。结论 在物流保鲜过程中,采用泡沫箱与PE袋相结合的方式包装小白菜,可以有效维持小白菜常温物流下的感官特性,且成本低廉、绿色安全。需注意,如果使用泡沫箱,则需相应调整内包装,才能给小白菜构建最适宜保鲜的气体环境,达到最佳的快递保鲜效果。The work aims to investigate the effect of foam box combined with film packaging on the freshness of pakchoi in normal temperature logistics,and analyze the effect of foam box barrier on the choice of thickness for pakchoi preservation film.To investigate the effect of different packaging on the freshness of pakchoi,polyethylene(PE)bags with different thickness of 20μm,40μm,60μm,80μm and 100μm were used to pack pakchoi with and without foam boxes.Since the gas barrier of the foam box affected the oxygen content inside the packaging,the thickness of the inner packaging film was different under the condition with and without the foam box.In case of no foam box,60μm PE film was selected.In case of foam box,40μm PE film was selected,which could effectively control the proportion of headspace to achieve the optimal sensory quality of the pakchoi.In addition,the presence of the foam box allowed the pakchoi to enter a stable gas environment 4 days earlier,which was more conducive to maintaining good merchantability.Regardless of whether there was a foam box or not,the 80μm and 100μm PE films were highly susceptible to rapid decay due to anaerobic respiration until merchantability was completely lost.Therefore,the use of foam boxes combined with PE bags directly in the logistics preservation process can effectively maintain the sensory characteristics of pakchoi in normal temperature logistics,which is also low-cost and safe for environment.It is important to note that if foam boxes are adopted,the inner packaging needs to be adjusted accordingly,in order to build the most suitable gas environment for pakchoi to achieve the best express preservation effect.

关 键 词：小白菜 泡沫箱 膜厚度 顶空气体比例 物流保鲜 

分 类 号：TS206.6[轻工技术与工程—食品科学] TB484.3[轻工技术与工程—食品科学与工程]