气相色谱-质谱联用法测定广玉兰果壳和种子中挥发性化学成分(已发表)

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1气相色谱-质谱联用法测定广玉兰果壳和种子中挥发性化学成分范小春1,2,梁光义1,2*,曹佩雪2,王道平21贵阳中医学院,贵阳550002;2贵州省、中国科学院天然产物化学重点实验室,贵阳550002摘要:目的:分析广玉兰果壳和种子的挥发性成分,并比较其异同与含量差异。方法:采用水蒸气蒸馏法分别提取果壳和种子中的挥发性成分,用气相色谱-质谱对其挥发性成分进行鉴定。结果:从广玉兰果壳中分离出111种组分,共鉴定了79种化合物,占挥发油总量的56.54%;从种子中分离出88种组分,共鉴定了58种化合物,占挥发油总量的46.02%;其中果壳和种子的共有成分21种(果壳占总挥发油含量的28.46%,种子占33.77%)。结论:为进一步研究开发广玉兰的果壳与种子提供依据。关键词:广玉兰;挥发性成分;气质联用(GC-MS)AnalysisofVolatileChemicalConstituentsinHullandSeedsofMagnoliagrandiflorabyGC-MSSpectrometryFANXiao-chun1,2,LIANGGuang-yi1,2*,CAOPei-xue,WANGDao-ping(1.GuiyangCollegeofTraditionalChineseMedicine,Guiyang550002,China2.ThekeylaboratoryofChemistryforNaturalProductsofGuizhouProvinceandChineseAcademyofSciences,GuizhouGuiyang550002)ABSTRACT:OBJECTIVE:ToanalyseandcomparethevolatilecomponentswhichwereextractedfromhullandseedofMagnoliagrandiflora.METHODS:ThevolatilecomponentswereextractedfromhullandseedsofMagnoliagrandiflorabysteamdistillationandthechemicalcomponentsofthemwereidentifiedbyGC-MS.RESULTS:Onehundredandelevencompoundswereextractedfromthehull,seventy-eightcompoundswereidentified,accountingfor56.54%ofthetotalvolatileoil,andeighty-ninecompoundswereextractedfromseed,fifty-eightcompoundswereidentified,accountingfor46.02%ofthetotalvolatileoil.Twenty-onecompoundswerecommoninbothofhullandseeds.CONCLUSION:TheresultsofthestudiescanbereferencedwhenthehullandseedsofMagnoliagrandifloraneedtobefurtherstudied.Keywords:Magnoliagrandiflora;VolatileChemicalConstituents;GC-MS广玉兰(Magnoliagrandiflora)为木兰科木兰属植物,又称大花玉兰、洋玉兰、玉兰,主产地为我国长江流域以南地带。广玉兰叶、花、种子、果壳均可入药,其叶及花中含有挥发油、木兰花碱等多种化学成分,果实中含有脂肪酸,花、叶可提取香料,种子可榨油,其叶乙酸乙酯提取物中还含有黄酮类和酚类化合物,叶和果实中含有五种倍半萜内酯[1-2]。其幼果水提取物含生物碱、皂苷及黄酮苷,乙醇提取物含黄酮和强心苷[3-4]。文献基金项目:国家中医药管理局重点学科,黔科合计工字[2009]4008号作者简介:范小春,女,硕士研究生,研究方向:主要从事天然药物化学研究。Tel:(0851)3807713E-mail:409271850@qq.com*通讯作者:梁光义,男,硕士学位,教授,博士生导师,研究方向:主要从事天然药物化学研究。Tel:0851-5652109E-mail:guangyi_liang@21cn..com2研究未发现有对广玉兰果壳和种子中挥发性成分进行对比性研究。本文采用水蒸气蒸馏法提取广玉兰果壳和种子中的挥发性成分,并用气相色谱-质谱联用鉴定其成分,进行对比分析果壳和种子中的所含挥发性成分差异,为进一步研究开发广玉兰的果壳与种子提供依据。1实验部分1.1仪器与材料广玉兰果实购于贵阳市万东桥药材市场(产地:贵州),由贵阳中医学院何顺志教授鉴定为木兰科木兰属植物广玉兰.Magnoliagrandiflora,正己烷(分析纯,天津市致远化学试剂有限公司),气相色谱-质谱联用仪(HP6890/5975C,美国安捷伦公司),电热套(山东鄄城华鲁仪器公司)。1.2挥发油的提取广玉兰成熟果实的果壳与种子剥离,分别粉碎,各称取150g,用适量蒸馏水浸泡5h,用挥发油提取器按常规提取7h直至挥发油量不再增加。得果壳挥发油0.15mL,收率为0.1%(mL/g);种子挥发油0.15mL,收率为0.1%(mL/g),所得挥发油均为黄色透明油状物,具有特殊香味。1.3GC-MS实验条件1.3.1色谱条件色谱柱:ZebronZB-5MSI5%Phenyl-95%DiMethylpolysiloxane(30m×0.25mm×0.25μm)弹性石英毛细管柱,柱温45℃(保留2min),以5℃/min升温至300℃,保持2min;汽化室温度250℃;载气为高纯He(99.999%);柱前压7.62psi,载气流量1.0mL/min;进样量1μL,分流比20∶1,溶剂延迟时间:5min。1.3.2质谱条件离子源为EI源;离子源温度230℃;四极杆温度150℃;电离能量70eV;发射电流34.6μA;倍增器电压1052V;接口温度280℃;扫描质量范围20~450amu。2.结果与分析所提取的果壳和种子挥发油按上述条件进行测试,得到的总离子流色谱图见图1和图2。所得质谱信息经计算机用NIST05和NTST275数据库检索与标准图谱对照分析,确认了其中部分化学成分。广玉兰果壳和种子的挥发油成分的分析结果见表1。310.0015.0020.0025.0030.0035.0040.0045.0050.0055.002000004000006000008000001000000120000014000001600000180000020000002200000240000026000002800000Time--AbundanceTIC:91022-10.D图1广玉兰果壳的挥发性成分总离子流图10.0015.0020.0025.0030.0035.0040.0045.0050.0055.0060.002000004000006000008000001000000120000014000001600000180000020000002200000240000026000002800000300000032000003400000360000038000004000000Time--AbundanceTIC:91022-11.D图2广玉兰种子的挥发油总离子流图表1广玉兰果壳与种子中挥发油化学成分分析结果序号化合物分子式相对含量(%)果壳种子1p-Cymenep-伞花烃C10H140.0500.1122Chavicol佳味醇C9H10O0.0340.0873α-Cubebeneα-库比烯C15H240.0972.7094α-Bergamoteneα-香柑油烯C15H240.1000.1295β-Caryophyllenβ-石竹烯C15H242.6304.3856Germacrene-D大栊牛儿烯DC15H241.6451.56873,7-Guaiadiene3,7-愈创木二烯C15H240.1330.1718α-Amorphene,(-)α-紫穗槐烯C15H243.4916.2109β-Selineneβ-芹子烯C15H243.8460.38310δ-Cadineneδ-桅子C15H246.41513.65511(+)-Aromadendrene香木兰烯C15H240.943--12(+)-Spathulenol叶桉油烯醇C15H24O7.2180.149413α-Longipineneα-长叶蒎烯C15H241.0930.24614α-Ylangeneα-衣兰烯C15H240.2970.92115gamma.gurjuneneβ-古芸烯C15H240.462—16α-Copaeneα-荜澄茄烯C15H240.547—17β-Elemeneβ-榄香烯C15H24--—18trans-α-Bergamotene反─佛手柑油烯C15H240.768—19α-Humuleneα-律草烯C15H240.727—20α-Muuroleneα-衣兰油烯C15H240.983—21β-Bisaboleneβ-甜没药烯C15H240.864—22γ-Cadineneγ-桅子C15H24--—23Selina-3,7(11)-diene芹子烷-3,7[11]齐墩果二烯C15H240.095—24Valencene凡伦橘烯C15H240.558—25α-Bisaboleneα-甜没药烯C15H241.160—26α-Bulneseneα-布藜烯C15H240.544—27α-Cedreneα-柏木烯C15H241.545—28Tridecane十三烷C13H28—0.10129Copaene可巴烯C15H24—2.10930Cadina-1(10),4-diene杜松烯C15H24—0.15331Bicyclosesquiphellandrene二环倍半水芹烯C15H24—0.07732α-cadineneα-桅子C15H24—0.60833β-Cubebene荜澄茄油烯C14H30—0.38234n-Tetradecane正十四烷C14H30—0.08835α-Calacoreneα-白菖考烯C15H20—0.18236n-Heptacosane正二十七烷C27H560.022—37Dehydroaromadendrene脱氢香橙烯C15H22--—38n-Dodecane十二烷C12H260.028—39Tridecane(CAS)正十三烷C13H280.161—40Eicosane二十烷C20H420.0290.268411,4-Dimethylbenzene1,4-二甲苯C8H100.010--42α-pipeneα-蒎烯C10H160.090--43Camphene莰烯C10H160.069--44β-Plneneβ-蒎烯C10H160.332--45Limonene苧稀C10H160.070—46Terpinolen异松油烯C10H160.149—47α-terpipeneα-松油烯C10H160.080—48Octadecan十八烷基异氰酸酯C18H380.079—49Calacorene二去氢菖蒲烯C13H161.237—50Tetracosane二十四烷C24H50—0.97451Heptadecane,9-octyl-9-辛基十七烷C25H52—0.89252Octacosane二十八烷C28H58—0.47153Hentriacontane正三十一烷C31H64—0.79754Ledene喇叭烯C15H24O0.182—55CaryophylleneOxiie石竹素C15H24O5.934—56isospathulenol异大花桉油醇C15H24O1.080—57Valerenol缬草萜烯醇C15H24O0.531—558(+)-β

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