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时间:2020-04-18
《豆甾二烯用于特级初榨橄榄油掺假检测的研究-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、分析检测sceandTechnolog~ofFoodIndustry豆甾二烯用于特级初榨橄榄油掺假检测的研究张欣’,杨瑞钰,陈迪。,方晓明。,,丁卓平”(1.上海海洋大学食品学院,上海201306;2.上海市标准化研究院,上海200031;3.上海出入境检验检疫局,上海200135)摘要:研究了利用豆甾二烯进行特级初榨橄榄油的掺假检测,考察了在特级初榨橄榄油中掺入不同比例油橄榄果渣油、榛子油、葵花籽油、大豆油、玉米油、花生油、米糠油、棕榈油和核桃油,采用高效液相色谱法(HPLC)测定掺和油中的3,5一豆甾二烯
2、含量。植物油样品用石油醚溶解,过硅胶柱净化,c柱分离,乙腈/叔丁基甲醚(75:25,v,v)作流动相,紫外检测波长235nm。结果表明,本方法具有良好的回收率及精密度,3,5一豆甾二烯是特级初榨橄榄油掺假鉴别的一个十分重要的特征性指标,本方法能够鉴别出了特级初榨橄榄油中掺入0-3%油橄榄果渣油、0.5%榛子油、2.1%葵花籽油、0.5%大豆油、0_3%玉米油、1.5%花生油、0I2%米糠油、0.6%棕榈油和0.6%核桃油。关键词:3,5一豆甾二烯,特级初榨橄榄油,高效液相色谱法,掺假Studyonstigma
3、stadienesusedforextravirginoliveoiladuIteratiOndetectionZHANGXin1YANGRui—yu2,CHENDP,FANGXiao-ming3.*,DINGZhuo—ping'(1.CollegeofFoodScience&Technology,ShanghaiOceanUniversity,Shanghai201306,China:2.ShanghaiInstituteofStandardization,Shanghai200031,China:3.Sh
4、anghaiExit—EntryInspectionandQuarantineBureau,Shanghai200135,China)Abstract:Thestigmastadienesusedforextravirginoliveoiladulterationdetectionwasinvestigated.Stigmasta一3,5-dienecontentoftheextravirginoliveoilblendedwithdifferentproportionofolivepomaceoil,haz
5、elnutoil,sunfloweroil,soybeanoil,cornoil,peanutoil,ricebranoil,palmoilandwalnutoilweredetectedbyhigh—performanceliquidchromatography(HPLC).Vegetableoilsamplesweredissolvedwithpetroleumether.cleanedupwithasilicagelcolumn,separatedwithC30columnanddeterminedby
6、ultravioletdetectionat235nmAcetonitrile/tert—butyJmethylether(75:25,V/V)wasservedasmobilephaseinisocraticelutionTheresultsshowedthatthemethodhadgoodrecoveryandprecision.andstigmasta一3.5一dienewasanimportantcharacteristicindexwhichcouldbeusedforextravirginoli
7、veoiladulterationdetectionTheproposedmethodcouldreliablyidentifyextravirginoliveoilblendedwithO.3%olivepomaceoil.0l5%hazelnutoil.2.1%sunfloweroil,05%soybeanoil,03%cornoil,1.5%peanutoil,0.2%ricebranoil,0.6%palmoiIand0.6%walnutoiI.respectivelyKeywords:stigmas
8、ta一3,5一diene;extravirginoliveoil;highperformanceliquidchromatography(HPLC);adUlteration中图分类号:TS207.3文献标识码:A文章编号:1002—0306(2014)18—0080—05doi:10.13386~.issnl002-0306.2014.18.008橄榄油是橄榄树果实的汁液,是唯一从新鲜果油品种。但
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