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时间:2020-04-23
《冰温结合气调贮藏对树莓保鲜效果的影响-论文.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、适僳鲜t.34,No.18,2013冰温结合气调贮藏对树莓保鲜效果的影响白丽娟,鲁晓翔,李江阔,陈绍慧(1.天津商业大学生物技术与食品科学学院,天津市食品生物技术重点实验室,天津300134;2.国家农产品保鲜工程技术研究中心,天津市农产品采后生理与贮藏保鲜重点实验室,天津300384)摘要:实验采用不同厚度的PE袋包装树莓,贮藏于冰温条件下,研究冰温结合气调贮藏对树莓品质的影响。结果表明,冰温结合气调处理使树莓贮藏期延至20d,并有效延缓了果实可滴定酸、可溶性固形物(TSS)含量的下降,对照组15d时的可滴定酸、TSS含量分别降至1.47%、9.2%,而
2、0.04mm气调处理组20d时的可滴定酸、TSS降至了1.58%、9.7%。但抑制呼吸强度、乙烯生成速率的差异不明显。同时,气调处理提高了树莓过氧化物酶(POD)、过氧化氢酶(CAT)的活性,降低了多酚氧化酶(PPO)活性,延缓了丙二醛(MDA)含量的升高,延缓了树莓的衰老。其中,0.04mmPE保鲜袋中树莓的品质最好。这说明适当的气调结合冰温贮藏更有利于树莓的贮藏。关键词:树莓,冰温贮藏,自发气调包装,保鲜Effectofatmospherepackagingcombinedwithice-temperatureonqualityofraspberryB
3、AILi-juan,LUXiao-xiang’,LIJiang-kuo2,CHENShao-hui2(1.TianjinKeyLaboratoryofFoodBioteehnology,CollegeofBiotechnologyandFoodScience,TianjinUniversityofCommerce,Tianjin300134,China;2.TianjinKeyLaboratoryofPostharvestPhysiologyandStorageofAgriculturalProducts,NationalEngineeringandTec
4、hnologyResearchCenterforPreservationofAgriculturalProducts,Tianjin300384,China)Abstract:ExperimentwithdifferentthicknessofthePEbagpackagingraspberries,andstoragedinice—temperatureconditions.itwasconductedtoinvestigatetheeffectOfice—temperaturecombinedwithmodifiedatmospherestorageo
5、nqualityofraspberry.Experimentalresultsshowedthat,ice-temperaturecombinedwithmodifiedatmospherestoragecouldincreasethestoragelifeofraspberriesto20d,andeffectivelysloweddowntheraspberry’Stitratableacid,solublesolidscontentdecreaserate,whenthetitratableacid,TSScontentofCKgroupdecrea
6、sedto1.47%,9l2%at15d,thevalueof0.04mmmodifiedatmospherepackagingwas1.58%,9-7%at20d.Buttheeffectofinhibitrespiratoryintensity.ethylenegenerationratewasnotobviousdifference.Atthesametime,modifiedatmospherepackagingincreasedperoxidase(POD),catalase(CAT)activitiesandsloweddownpolyphen
7、oloxidase(PPO)activity,italsodecreasedtheMDAcontentpermeability,SOdelayedripeningofraspberry.Itshowedthattheoptimumpackagingofmodifiedatmosphereforraspberrywere0.04mmPEbag.Thisshowedthatsuitableatmospherepackagingcombinedwithice-temperaturewasmoreadvantageoustotheraspberrystorage.
8、Keywords:raspberry;ice—temperatur
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