河南省肉牛产地稳定性同位素溯源技术初探.pdfVIP

74 2011年第四届国际食品安全高峰论坛论文集 河南省肉牛产地稳定性同位素溯源技术初探 刘晓玲10郭波莉1魏益民1·‘师俊玲2 (1．中国农业科学院农产品加工研究所，农业部农产品加工与质量控制重点开放实验室，北京100193； 2。西北农林科技大学，陕西，杨凌712100) 通过方差分析，聚类分析和判别分析研究河南省不同地区牛尾毛中同位素组成的区域分布情况。结果表明，新野县 和内乡县牛尾毛稳定同位素比值差异显著，两县整体判别率达94．7％；但新野县各乡镇之间区分不明显，判别率较低。 说明利用牛尾毛中的稳定同位素分析技术可以区分来自新野县和内乡县的肉牛，但不能进行更小范围内区分。 关键词：稳定性同位素；溯源；牛尾毛；613c；615N；62H Liu G-uoBo-lilWeiYi-minlShi Xiao-lin91．2 Jun-lin92 Product and f1．Key QualityControl,MinistryofAgriculture,InstituteofAgro·Food LaboratoryofAgricultureProcessing Science＆Technology，ChineseAcademy 100193； ofAgriculturalSciences，Beijing 2．NorthwestAF Universi劫．Shaanxi,Yangling,712100) different of Abstract：1k6”C、61，Nand6锕valuesincattletailhairfrom countiesHenan weremeasured province by and were to the distributionof Ⅱ洲S．Variance discriminant analysis．dusteranalysis analysisemployedinvestigateregional incattletailhairfromdifferentdistricts．卫1eresult thattherewere differencesin isotopiccomposition suggested significant themeanvaluesofstable incattletailhair Countvand thetotalcorrect isotopes between County,and Xinye Neixiang discriminantratewas94．7％．Nevertheless．townsin hada lowdiscriminantrate．11_lese佗sultsshowed Xinyecounty very beused thatstable could todiscriminatebeefbetweencountiesratherthantowns． isotopeanalysis 近年来，食品安