油菜不同保鲜膜保鲜效果的研究

Study on the effect of preservation of different preservative films in poles

摘要: 以油菜为试材,研究0℃条件下,新型防霉防雾PE膜Ⅰ、Ⅱ的MAP保鲜效果,以普通PE膜为对照,定期检测失重率、色度（-a*/b*）、可溶性固形物含量（SSC）、细胞膜透性、丙二醛（MDA）含量等指标,筛选油菜专用保鲜膜。结果表明,PE膜Ⅰ保鲜效果最佳,袋内平衡气体浓度O2为15.8%,CO2为3.9%;贮藏36d,PE膜Ⅰ失重率0.76%、-a*/b*值0.49、SSC含量为3.3%、膜透性14.29%、MDA含量为2.14nmol/g·FW,均显著地优于对照（p<0.05）。

Abstract: Taking the pole as material, ordinary PE film as control, the effects of MAP preservation using PE filmⅠandⅡcontaining mould and fog prevention were studied. Weight-loss rate, -a*/b*, soluble solids content (SSC) , cell membrane permeability, malondialdehyde (MDA) content were tested regularly during storage. The result showed that the effect of filmⅠof polyethylene (PE) on the preservation of pole was best after 36d. O2and CO2concentrations were 15.8% and 3.9% respectively, weight-loss rate was 0.76%, -a*/b* was 0.49, SSC was 3.3%, cell membrane permeability was 14.29%, MDA content was 2.14nmol/goFW, which were all significantly better than the control (p<0.05) .