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水蔓菁挥发油成分的气相色谱/质谱分析 总被引:5,自引:0,他引:5
采用常规水蒸气蒸馏法提取出水蔓菁精油,经气相色谱-质谱联机分析,分离出40多个峰,鉴定出41种化合物,主要是4-亚甲基-1-(1-甲基乙基)-环己烯、β-蒎烯、1S-α蒎烯、β-月桂烯、大根香叶烯-D等,占总峰面积的97%。 相似文献
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用GC-MS法分析春、秋季薄荷油成分 总被引:2,自引:0,他引:2
用毛细管气相色谱-质变法对同一种薄荷春季、秋季茎叶中挥发油的精细成分进行了分析测试,分离出春季薄荷油中20个组分、秋季薄荷油中16个组分,通过计算机库存质谱图和标准谱图册检索鉴定出各个组分对应的化合物,用峰面积归一化方法计算出各组分的相对含量,其中春季薄荷以(cis)-薄荷酮(3.70%)、(2R-cis)-薄荷酮(1.25%)、(1α,2α,5β)-薄荷醇(16.88%)、(1α,2β,5β)-薄荷醇(74.98%)为主,秋季薄荷以(cis)-薄荷酮(3.88%)、(2R-cis)-薄荷酮(1.24%)、(1α,2α,5β)-薄荷醇(15.76%)、(1α,2α,5β)-薄荷醇(69.97%)、α-蒎烯(2.68%)、β-蒎烯(2.07%)和拧檬烯(1.71%)为主。 相似文献
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比较了萜烯单体α-蒎烯、β-蒎烯、苎烯的阳离子聚合性能,还考察了三种单体的活性聚合可能性。在Lewis酸AlCl3作用下,聚合速率大小顺序为:β-蒎烯的聚合产物分子量较高。AlCl3与SbCl3复合后,α-蒎烯、苎烯的聚合速率增加,β-蒎烯的聚合速率反而下降。α-蒎烯的聚合速率增加幅度大于苎烯,使得前者聚合速率高于后者。与使用AlCl3相比,添加SbCl3后产物的分子量变化是:α-蒎烯变大,苎烯不 相似文献
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桉树叶挥发油化学成分的研究 总被引:1,自引:0,他引:1
采用毛细管气相色谱-质谱(CGC-MS)联用技术对桉树叶挥发油的化学成分进行研究,经毛细管气相色谱分离出30个峰,共确认了其中21种成分,占总油量的97.57%。其主要成分是按油精、3,7,7-三甲基-二环[4.1.0]庚2-烯、α,α,4-三甲基-3-环已烯-1-甲醇、喇叭茶醇等。 相似文献
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Essential oil was extracted from Artemisia lavandulaefolia DC.by steam distillation(SD) and supercritical-CO2 fluid extraction(SFE),respectively.The constituents of the essentil oils extracted with those two methods were analyzed by gas chromatography-mass spectrometry(GC-MS) and insecticidal activities of the essential oils were evaluated,then the results were compared to assess their biological activity.Thirty-one compounds were identified in the essential oil extracted by SD,and its main components were eucalyptol,α,α,4-trimethyl-3-cyclohexene-1-methanol and so on.Twenty-two compounds were identified for the essential oil extracted by SFE,and its main components were cyclodecene,n-hexadecanoic acid and so on.Six chemical compositions were all contained in the essential oils extracted by the two methods,i.e.,eucalyptol,α,α,4-trimethyl-3-cyclohexene-1-methanol,caryophyllene,[3aS-(3aα,3bβ,4β,7α,7aS)]-octahydro-7-methyl-3-methylene-4-(1-methylethyl)-1H-cyclopenta[1,3]cyclopropa-[1,2]benzene,nerolidol and(-)-Spathulenol.The fumigation toxicity of the essential oil obtained by means of SD to the adults of Sitophilus zeamais is significantly higher than that of the essential oil by means of SFE.The contact toxicity of the essential oil obtained by means of SFE to the adults of S.zeamais is higher than that of the essential oil obtained by means of SD,but the difference is not significant. 相似文献
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香格里拉产小叶杜鹃花挥发性成分的GC-MS分析 总被引:3,自引:0,他引:3
研讨香格里拉县小叶杜鹃花的挥发油化学成分,为进一步合理开发利用其药用资源提供试验依据。利用水蒸汽同时蒸馏萃取法(SDE)提取小叶杜鹃花的挥发性化学成分,通过气相色谱-质谱联用技术(GC-MS)对各个色谱峰定性,并采用色谱峰面积归一法获得各个化合物的相对含量。从小叶杜鹃花挥发油中共分离鉴定了73个色谱峰,占挥发油总量的85.53%。小叶杜鹃花挥发油主要成分有α-蒎烯(14.00%)、正二十三烷(9.51%)、7-甲氧基-2,2-二甲基-3-色烯(6.26%)、正二十烷(6.11%)、苯乙醇(5.10%)、1-Heneicosyl formate(4.60%)等。 相似文献
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党丽娟 《广东微量元素科学》2006,13(5):56-58
为鉴定紫茉莉根挥发油的化学成分,按2000年版中国药典规定的方法提取挥发油,采用气相色谱-质谱联用仪分析了紫茉莉根挥发油的化学成分。结果表明,从紫茉莉根中提得0.12%的挥发油,鉴定了其中23种化合物,这些成分均为首次从紫茉莉根中分离鉴定,为进一步研究紫茉莉根的化学成分提供有益的补充。 相似文献
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山苍子雄花和雌花挥发油的提取及成分分析 总被引:3,自引:0,他引:3
山苍子的根、叶和果实中均含有精油,山苍子油的主要成分为柠檬醛。采用水蒸汽蒸馏法提取山苍子花挥发油,对雄花和雌花分别提取。并利用GC-MS气质联用仪对两组挥发油进行分析检测,确定其化学成分及相对百分含量。从雄花挥发油中鉴定出43种成分(占挥发油总含量的88.15%),从雌花挥发油中鉴定出30种成分(占挥发油总量的85.53%)。 相似文献
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湘西金银花挥发油化学成分研究 总被引:14,自引:0,他引:14
采用GC/MS/DS联用仪对湘西金角花挥发油中的化学成分进行了研究。并鉴定出40种组分。其主要成分为:芳樟醇、环氧芳樟醇、α-萜品醇、顺-3-已 烯醇、顺芷酸-3、己烯酯、香叶醇、氧化芳樟醇、法尼醇、顺-苯酮、法尼烯、大根香叶烯、橙花醇等。其中芳樟醇含量最高,约占精油总量的20%。 相似文献
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J Taskinen L Nyk?nen 《Acta chemica Scandinavica. Series B: Organic chemistry and biochemistry》1975,29(7):757-764
The volatile constituents of angelica root separated by extraction with etherpentane and by extraction with alcohol-water were investigated by means of glass capillary and preparative gas chromatography, IR, UV, NMR and mass spectrometry. 16 monoterpene hydrocarbons, 13 sesquiterpene hydrocarbons, 12 monoterpene alcohols, 4 oxygenated sesquiterpenes, 11 esters, 3 lactones, 7 aliphatic carbonyl compounds and 4 aromatics were identified. Twenty additional compounds identified were present only in the alcoholic sample. These consisted of ethyl ethers of monoterpene alcohols, ethyl esters of long-chain fatty acids, and acetals. The relative proportion of many compounds was found to depend on the method used to isolate the essential oil. 相似文献
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单叶蔓荆子挥发油成分的GC/MS分析 总被引:4,自引:0,他引:4
采用气相色谱/质谱(GC/MS)联用技术对山东泰山产单叶蔓荆子挥发油的化学成分进行了分析,分离出30多个峰,确认了其中28种成分,占总离子流的95%以上,并对挥发油的主要化学成分Δ3-蒈烯,用气相色谱/傅里叶红外光谱(GC/FTIR)法进行了验证。 相似文献
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