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1、2007年1月色谱Vo.l25No.1January2007ChineseJournalofChromatography30~34全二维气相色谱-飞行时间质谱法测定烟草的中性化学成分1,22213鹿洪亮,赵明月,刘惠民,龚安达,于静,1121郑湖南,梁俐俐,李莉,魏步建(1.福建中烟工业公司,福建厦门361022;2.中国烟草总公司郑州烟草研究院,河南郑州450001;3.郑州轻工业学院食品与生物学院,河南郑州450002)摘要:建立了采用全二维气相色谱-飞行时间质谱(GCGC-TOFMS)分
2、析烟草的中性化学成分的方法。以DB-Petro(50m200m0.5m)为第一维色谱柱,DB-1701(2.3m100m0.1m)为第二维色谱柱;调制周期为8s;柱头压力为550kPa;采用程序升温方式,初始温度分别为80和85。采用所建立的方法对不同部位的烟叶、不同品种烟草中的25种中性香味成分含量进行了测定和对比。结果表明:云南楚雄产云烟85的中性香味成分(不包括新植二烯)的总量以中部叶最高,其次是上部叶,下部叶最少;国内外不同品种的烤烟中中性香味成分的含量高低顺序为:巴西烤烟最高,其次是津
3、巴布韦烤烟、云烟85、中烟101、NC89、K326;4类烟草中中性香味成分含量最高的是香料烟,其次是白肋烟、烤烟、马里兰烟。关键词:全二维气相色谱-飞行时间质谱;同时蒸馏萃取;中性化学成分;烟草中图分类号:O658文献标识码:A文章编号:1000-8713(2007)01-0030-05栏目类别:研究论文DeterminationofNeutralChemicalConstituentsinFlue-CuredTobaccobyComprehensiveTwo-DimensionalGasChroma
4、-tographyandTime-of-FlightMassSpectrometry1,22213LUHongliang,ZHAOMingyue,LIUHuimin,GONGAnda,YUJing,1121ZHENGHunan,LIANGLili,LILi,WEIBujian(1.R.&D.CenterofFujianTobaccoIndustryCorporation,Xiamen361022,China;2.ZhengzhouTobaccoResearchInstituteofChinaNationalTob
5、accoCorporation(CNTC),Zhengzhou450001,China;3.SchoolofFoodandBiologicalEngineering,ZhengzhouUniversityofLightIndustry,Zhengzhou450002,China)Abstract:Amethodwasestablishedtoanalyzeneutralchemicalconstituentsintobaccoaccu-ratelybycomprehensivetwo-dimensionalgasc
6、hromatographyandtime-of-flightmassspec-trometry(GCGC-TOFMS).ADB-Petrocolumn(50m200m0.5m)waschosenasthecolumnforthefirstdimension,andaDB-1701column(2.3m100m0.1m)waschosenasthecolumnfortheseconddimension.Themodulationperiodwassetat8s,andthecolumnpressur
7、ewas550kPa.Theinitialtemperaturesofthetwocolumnsweresetat80and85respectivelyandthenincreasedwithtemperatureprogramming.Thecontentsoftheneutralchemicalconstituentsindifferentpositionsoftobaccoleaves,productregionsandvar-ietiesoftobaccowerecompared.Theresultss
8、howedthatthetotalcontentsofthe24neutralfractionsinthemiddleleaveswasthemost,thenintheupperleavesandtheleastinthelowerleaves.Thesecontentsintheflue-curedtobaccoproducedbyBrazilwasth