饲料对牛乳的碳稳定同位素比值的影响-论文.pdf

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1、Vo1．35No．4第35卷第4期质谱学报2014年7月JournalofChineseMassSpectrometrySocietyJu1．2014TheImpactofForageontheStableCarbonIsotopeCompositioninMilkWANGLeil2’3，ZHONGQi—ding，WANGDao—bing～，Ming。～．TAOHong—bing。～，WUZhu—ying。～，XIONGZheng—he。～。XIAODong—guang(1．TiⅡnjinUniversityofS

2、cienceandTechnology，Tianjin300457’China；2．Chi口NntiD口R8s8口rchInstituteofFood8‘FermentationIndustries，Beijing100027，China；3．N口￡on￡Sndrn￡oCentreofFood8LFermentationIndustry，Beijing100027，China)Abstract：Thestablecarbonisotope(。C)ratiosofwholemilkanditsisolatedcomp

3、o—nents(casein，skimmilk，andfat)weredeterminedbyelementalanalysis—isotoperatiomasssDectrometry(EA—IRMS)．Thistechniquewasfoundtoberepeatableandpossessgoodaccuracywithastandarddeviationoflessthan0．1％0(咒：==5)．Acomparisonofthe。Cva1uesofdifferentmilksamplesindicates

4、thatthe。CcompositionisimpactedbythetypeofforageconsumedbytheCOWS．The"Cvaluesofmilkfromfarmsinwhichmaizeisthemainroughagearehigherthan一17．6‰，arerelativelylowerwhenthedietcontainsLPvschinensisandalfalfa．The。Cvaluesofcommerciallyavailablemilkpurchasedfromdifferen

5、tregionsdemonstratedistinctcharacteristics，milksamplesfromChinaandcountriesusingadvaneedanimalhusbandrypracticesaresignificantdifferences．Thecon—clusi。n0fthisresearchverified。Cvaluesintermsoftracingthetypesofmilkandprodu—cingareas．Theaccumulateddatawasusedtola

6、yatheoreticalfoundationfortheapplica—tionofstableisotopeanalysistechniquesinmilktraceability．Kevw0rds：milk；elementalanalysis—isotoperatiomassspectrometry(EA—IRMS)；tracea—bilitytechnology；。CCLCnumber：O657．63Documentcode：AArticleIC：1004—2997(2014)04—0378—07doi：1

7、0．7538／zpxb．2014．35．04．0378ReceivedDate：2014—01—24；AcceptedDate：2014—05—2lSupp0rtProjects：Nati0nalNatureScienceFoundationofChina(31101333)，InternationalS&TCooperationProgramofChina(2011DFA33270)andAQSIQPublicWelfareIndustryScientificResearchProjects(201210016)

8、AⅡthor：WANGLei(1987~)，male(Hannationality)，postgraduate，biochemicalengineering．E-mail：wanglei20560@sina·cornCommunicationAuthor：ZHONGQi—ding(1980～)，male(Hannationality)’seniorengin