常见食用植物油中特征性脂肪酸的检测及鉴别

————301—1221111.1000502.050017。69125。GB/T22223—200846。C20∶0、C24∶0C22∶075.45g/100gα-15.13～16.37g/100gn6/n3。、n6/n3。R587.2A1004-8456201204-0301-05DetectionandidentificationofcharacteristicfattyacidsincommonediblevegetableoilChenYuexiaoMaYuxiaLuYingHeMeiYangYuexinInstituteforNutritionandFoodsafetyChinaCDCBeijing100050ChinaAbstractObjectiveTodeterminetheconstitutionandcontentrangeofcharacteristicfattyacidsincommonvegetableoilsandtodiscusshowtoutilizetheseindicatorstoidentifythequalityofvegetableoil．MethodsOnehundredandtwentyfivecommonvegetableoilsamplesof9kindstwobatchesforeachkindwerecollectedfromsixcities．Theconstituentsof46fattyacidsandcharacteristicfattyacidsofvegetableoilswereidentifiedaccordingtoGB/T22223—2008.ResultsThecharacteristicfattyacidsinrapeseedoilteaoilflaxseedoilsunfloweroilandriceoilwereerucicacidoleicacidα-linolenicacidlinoleicacidandpalmiticacidrespectivelythecharacteristicfattyacidsinpeanutoilwereC20∶0C24∶0andC22∶0fattyacids．Theratioofn6/n3insoybeanoilwasthemostclosedtothevaluerecommendedbytheChinesenutritionassociation．Thetotalcontentofoleicacidandlinoleicacidandthecharacteristiccompositionofpalmiticacidandstearicacidwererelativelystableinsesameoilwhichcouldbeusedforidentification．Thecharacteristicfattyacidincornoilwasnotobvious．ConclusionCombinationofcharacteristicfattyacidmonomerfattyacidcompositionaswellasn6/n3ratioanalysisthepurposeofqualitativedetectionofcommonvegetableoilscouldbeachieved．KeywordsEdiblevegetableoilcharacteristicfattyacidsd[e-mail][e-mail]《》25～30g40%1。α-、2－3n6/n34～6∶11。、、n6/n34－6。Darmon79E。。—302—CHINESEJOURNALOFFOODHYGIENE201224411.1、、、、、、、、、、、、、125。4℃。1.2GC2014FIDCP-sil88100m×0.25mm×0.2μm。Sigma。1.3GB/T22223—20088。8ml2%80℃15%7ml2min10ml。。1.420020.9569100g95.6g100g。XSFA=ASFAi/ATotalFA×100×0.956XMUFA=AMUFAi/ATotalFA×100×0.956XPUFA=APUFAi/ATotalFA×100×0.956n－6Xn－6=An－6i/ATotalFA×100×0.956n－3Xn－3=An－3i/ATotalFA×100×0.956ASFAMUFAPUFA。1.5。1.6。1.7MMin～MaxMinMax。22.11014。、。C22∶14.61g/100g。WHO5%。3%11－13。250～17.07g/100g。、1.02～1.47g/100g0.8～1.41g/100g1.67～2.99g/100g。75.45g/100g。α-45.66g/100g。。15.13～16.37g/100g。85%9%5%14。1。2.2、、n6、n3。15。n6/n38.6。n649.29～52.85g/100gn6/n3100。SFA、MUFA、PUFAn3、n62。————303——304—CHINESEJOURNALOFFOODHYGIENE2012244————305—3、、、16－18。Dourtoglou19。20。21、、、。125n6/n3。1M．2008.2GOMEZCCBERMEJOLLLORIAKV．Importanceofabalancedomega6/omega3ratioforthemaintenanceofhealthnutritionalrecommendationsJ．NutrHosp2011262323-329.3KANGJX．Theimportanceofomega-6/omega-3fattyacidratioincellfunction．Thegenetransferofomega-3fattyaciddesaturaseJ．WorldRevNutrDiet20039223-36.4．J．20032412103-106.5．J．200872115-117.6．J．2006137-39.7DARMONNDARMONMFERGUSONE．IdentificationofnutritionallyadequatemixturesofvegetableoilsbylinearprogrammingJ．JHumNutrDiet200619159-69.8．GB/T22223—2008、、-S．2008．9．2002M．2002.10．J．2010327-30.11．J．20073210248-250.12．J．2004305409-412．13．GB1536—2004S．2005．14．J．2001247-49.15．C．2004.16．J．2011181．17．J．2007530-35.18．J．2002648.19DOURTOGLOUTD．DetectionofoliveoiladulterationusingprincipalcomponentanalysisappliedontotalandregioFAcontentJ．JHumNutrDiet200280203-208.20．GC-MSJ．200524125-28.21．5J．2007285櫥櫥櫥櫥櫥櫥櫥櫥櫥櫥櫥櫥毣毣毣毣26-27.《》20128《》《》Leuconostoc．mesenteroidessubsp．mesenteroides20104《》〔2010〕65GynuraProcumbensLour．Merr、BarleyLeaves。、、。。○