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1、现代食品科技ModernFoodScienceandTechnology2014,Vol.30,No.7低剂量辐照和Vc对鸡肉冷藏品质的影响1,22111121李阳,汪超,廖李,汪兰,熊光权,程薇,李冬生,乔宇(1.湖北省农业科学院农产品加工与核农技术研究所,湖北省农产品辐照工程技术研究中心,湖北武汉430064)(2.湖北工业大学,工业发酵湖北省协同创新中心,湖北武汉430068)60摘要:为了延长鸡肉的货架期,本文运用Coγ辐照技术,探讨了不同剂量辐照和抗氧化剂对鸡肉理化性质的影响,确定鸡肉最佳辐照条件为:鸡肉于0.4%Vc溶液中浸泡5min,真空包装后进行辐照剂量处理(处理剂量
2、为2kGy),同时测定了于此条件处理后的鸡肉在4℃下贮藏28d中鸡肉的菌落总数、色度、剪切力、TBA、TVB-N、pH等各项指标的变化,结果表明:在整个贮藏期内,Vc处理对鸡肉的菌落总数和TVB-N值、嫩度、pH值无明显影响。Vc处理组鸡肉在0d、14d、28d时TBA值均小于空白组;0d空白组和14dVc处理组两组的TBA值,没有显著差异(P>0.05),这说明,Vc处理能有效抑制辐照鸡肉的氧化。鸡肉经过低剂量辐照和抗氧化剂处理后,能有效抑制微生物的生长和脂质氧化,同时能减轻色泽的变化,冷藏14d内能达到较好的保鲜效果。关键词:辐照;鸡肉;Vc;品质文章篇号:1673-9078(2
3、014)7-211-217EffectsofLow-doseIrradiationandVcContentontheStorgeQualityofRefrigeratedChickenLIYang1,2,WANGChao2,LIAOLi1,WANGLan1,XIONGGuang-quan1,CHENGWei1,LIDong-sheng2,QIAOYu1(1.ResearchInstituteofAgriculturalProductsProcessingandNuclear-AgriculturalTechnology,HubeiAcademyofAgriculturalScienc
4、es/AgriculturalProductsProcessingSubcenterofHubeiAgriculturalScience&TechnologyInnovationCenter,Wuhan430064,China)(2.HubeiUniversityofTechnology/HubeiProvincialCooperativeInnovationCenterofIndustrialFermentation,Wuhan430068,China)60Abstract:Toextendtheshelflifeofrefrigeratedchicken,Co-γirradiat
5、ionandantioxidantswereusedandtheeffectofVconlow-doseirradiationofchickenwereinvestigatedinthisstudy.Thebestirradiatedprocesswastreatingthechickenfor5minby0.4%Vcandvacuumpackingunderthe2kGyirradiationdoseandthenstoringthemupfor28dbelow4℃.Totalnumberofcolonies,chrominance,shearforce,TBA,TVB-N,pHw
6、eremeasuredwithin28dstorage.Theresultsshowedthatthetotalnumberofcolonies,TVB-N,tendness,pHofVc-treatedgrouphadnoobviouseffectsduringthestorageperiod.ChrominanceofVc-treatedgroupwasbetterthanthatofblankgroup,whileTBAofVc-treatedgroupwaslessthanthatofblankgroupat0d,14dand28d,respectively.TBAofbla
7、nkgroupat0dandthatofVc-treatedgroupat14dhadnosignificantdifferences(P>0.05),whichshowedthatVc-treatedeffectivelyinhibitedtheoxidationofirradiatedchicken.Therefore,low-doseirradiationandantioxidantsprocessingcaninhibitmicrobialgrow