聚己内酯自发气调包装薄膜对菠菜贮藏品质的影响

摘要

为了探究聚己内酯(PCL)自发气调薄膜对菠菜的保鲜效果.以大叶菠菜为研究对象,在4 ℃贮藏条件下分别研究了无包装、常规低密度聚乙烯(LDPE)薄膜包装(对照组)和聚己内酯(PCL)薄膜包装3种不同贮藏方式对菠菜采后贮藏品质的影响.结果表明,2种包装薄膜均可以改善菠菜的采后贮藏品质,其中聚己内酯(PCL)薄膜可以在包装内部形成更加适合菠菜贮藏保鲜的气氛环境,更好地延缓菠菜采后失重率的上升,并抑制叶绿素的降解,更好地抑制丙二醛含量的积累,延缓采后衰老,较好地保持菠菜的感官品质.%In order to investigate the fresh-keeping effect of PCL modified atmosphere packaging film on spinach.The effects of un-packed,LDPE film(control)and PCL film packaging treatments on postharvest quality of spinach during storage at 4 ℃ were studied. The results indicated that compared with the control group of un-packed both of the packaging films could improve the postharvest quality of the spinach,and PCL packaging treatment group could be better in the development of initial atmosphere suitable for the storage of spinach.Moreover,PCL film was better in delaying the in-crease of weight loss ratio and inhibiting the degradation of chloro-phyll and reduce its yellowing.In addition,it was found to be effec-tive to inhibit the accumulation of malondialdehyde content and retard the postharvest senescence.Furthermore,it also could help to maintain the better sensory quality of spinach.