不同厚度聚乙烯膜包装对甜玉米贮藏品质的影响时文林1,2，赵雅琦1,2，姜清秀1,2，左进华1，封碧红2，王清1,*（1.北京市农林科学院农产品加工与食品营养研究所，农业农村部蔬菜产后处理重点实验室，果蔬农产品保鲜与加工北京市重点实验室，北京100097；2.广西大学农学院，广西南宁530000）摘要：为研究不同厚度聚乙烯（PE）膜包装对甜玉米冷库贮藏期间品质的影响，采用0.02mm和0.03mmPE膜包装甜玉米，并于0℃冷库中贮藏，考察其感官评分、失重率、皱缩率、色泽的变化，并对其呼吸速率、乙烯生成率及可溶性固形物、可溶性糖、淀粉含量进行测定，使用电子鼻比较其风味品质的差异。结果表明：0.02mmPE膜包装可显著降低甜玉米贮藏过程中的呼吸速率，抑制乙烯生成，延缓苞叶失绿黄化，保持甜玉米籽粒色泽，提高甜玉米可溶性固形物和可溶性糖含量，降低其淀粉含量，从而维持甜玉米的贮藏品质和风味品质。试验表明，0.02mmPE膜包装在维持甜玉米采后贮藏品质方面有较好的效果，该研究为甜玉米采后包装材料的选择提供一定参考和数据支撑。关键词：甜玉米；厚度；聚乙烯膜；贮藏品质EffectsofPolyethyleneFilmsPackagingwithDifferentThicknessesontheStorageQualitiesofSweetCornsSHIWen-lin1,2,ZHAOYa-qi2,JIANGQing-xiu2,ZUOJin-hua1,FENGBi-hong2,WANGQing1,*（1.InstituteofAgriculturalProductsProcessingandFoodNutrition,BeijingAcademyofAgricultureandForestry,MinistryofAgricultureandRuralAffairs,KeyLaboratoryofVegetablePost-productionProcessing,BeijingKeyLaboratoryofPreservationandProcessingofFruitandVegetableAgriculturalProducts,Beijing100097,China;2.CollegeofAgriculture,GuangxiUniversity,Nanning530000,China）Abstract:Thisstudyaimedtoinvestigatetheeffectsofpolyethylenefilms(PE)packagingwithdifferentthicknessesonthequalitiesofsweetcornsduringcoldstorage.Thesweetcornswerepackagedby0.02mmand0.03mmPEfilmsandstoredat0℃,andthechangesofsensoryscores,weightlossrates,shrinkageratesandcolorweredeter-mined,andtherespirationrates,ethyleneproductionrates,solublesolids,solublesugarsandstarchcontentsweremeasured.Thedifferenceofflavorqualitywascomparedwithelectronicnose.Theresultsshowedthat0.02mmPEfilmpackagingcouldsignificantlyreducetherespiratoryratesofsweetcornsduringstorage,andinh...
