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GC/MS法分析花椒挥发油的化学成分 总被引:20,自引:1,他引:20
用水蒸气蒸馏法对岳阳产花椒果实进行挥发成份的提取 ,测得挥发油的含量为 1 .2 %。用 GC/ MS分析法对其进行了分离、鉴定。初步分离出 60余个峰 ,鉴定出 5 2种物质 ,用面积归一法确定其相对含量。在被测物质中 ,烃类化合物有 1 8种 ,主要物质为石竹烯 (占被测组分的 (下同 ) 8.4 4% )、大根香叶烯 (2 .99% )等。有机含氧化合物 3 4种 ,主要组分为 γ-萜品醇 (1 0 .3 % )、β-萜品醇 (9.3 7% )、水芹醇 (8.78% )、石竹烯含氧化合物 (4.2 3 % )等 相似文献
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繁缕挥发油的GC—MS分析 总被引:2,自引:0,他引:2
采用水蒸气蒸馏法提取野生繁缕全草挥发油,并用气相色谱-质谱(GC—MS)联用技术对挥发油成分进行分析,用峰面积归一法测定其相对含量。共鉴定出49种成分,占总油量的69.32%。分析结果表明,脂肪醇和烷烃及其衍生物是繁缕挥发油的主要成分,占总挥发油的50.47%;已鉴定成分中的脂肪醇占总挥发油的25.48%,而其中不饱和脂肪醇占总脂肪醇的78.49%。此外芳香族化合物占13.27%,还有少量酯和蒽的衍生物等。 相似文献
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采用正交试验法对水蒸气蒸馏提取水红花子挥发油的提取条件进行研究,用气相色谱-质谱联用技术测定最佳提取条件所得水红花子挥发油的化学成分,结果显示最佳提取条件为水红花子粉末(20目)加入800 mL水浸泡4 h,水蒸气蒸馏8 h。鉴定出其中24种成分, 含量最多是萜烯类化合物(27.36%)和酮类化合物(20.07%),其中主要为异长叶烯(19.45%)、α-石竹萜烯(0.84%)、α-蒎烯(0.99%)、石竹烯氧化物(3.20%)和香叶基丙酮(5.04%)。 相似文献
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用GC/MS测定大葱挥发油中的化学成分 总被引:14,自引:0,他引:14
本工作采用水蒸汽蒸馏法,分别从大葱的葱白、葱叶、葱花中提取挥发油,用毛细管气相色谱-质谱法定性鉴别了挥发油中的18种化学成分。主要成分有:二甲基二硫醚、二甲基三硫醚、甲基丙基二硫醚、甲基丙基三硫醚、甲基丙烯基二硫醚、甲基丙烯基三硫醚、丙基丙烯基二硫醚、丙基丙烯基三硫醚、二丙基三硫醚等含硫化合物,以及2-甲基-2戊烯醛、2-十三酮等含氧化合物。文中还比较了大葱挥发油和洋葱挥发油中化学成分的相对含量。 相似文献
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The essential oil from the flowers of Chrysanthemum indicum in Henan was analyzed by capillary GC/MS method. Eighty-one components were separated and identified representing 93% of the total essential oil. The main chemical components were monoterpenes and sesquiterpenes, in which the content of camphor and borneol were most. 相似文献
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The essential oils from Saussurea tridactyla were extracted by steam distillation. The chemical components of the essential oils were analyzed by GC/MS, and 23 compounds were identified, which account for 90% of the total essential oils. 相似文献
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The essential oils from flowers of Rosa chinensis were obtained from Sichuan, Anhui and Shanxi provinces, which were extracted by steam distillation method. The chemical components of the essential oils were analyzed by gas chromatography-mass spectrometry (GC/MS). 相似文献
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将灌冠红梅子根的乙醇提取物用甲醇溶解,加水,用石油醚萃取,采用GC/MS法进行分析。以峰面积归一化法计算各化合物在挥发油中的相对含量,共鉴定出个22化学成分,占总体含量的 98.32%。主要成分有4-甲基-2-乙基己烷(14.79%)、反式-1-甲氧基-1-丁烯(13.41%)、2,3,3-三甲基己烷(10.24%)、(1-甲氧基-1-戊基)环丙烷(10.22%)、N,N-二甲基叔丁基胺(9.23%)、环己烷(8.55%)、1,1-二甲氧基-2-丁炔(6.34%)、2-甲基-2-乙基环氧乙烷(6.25%)、庚烷(4.38%)、正十一烷(3.6%)、1-碘正十四烷(2.6%)。 相似文献
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An essential oil was extracted from the traditional Tibetan medicine of Pyrethrum tatsienense by steam distillation method. The chemical components of the essential oil were analyzed by gas chromatography-mass spectrometry(GC/MS) and 30 compounds were identified, which account for 67.5 % of the total essential oil from the flowers of P. tatsienense. 相似文献
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A new method, non-polar solvent microwave-assisted extraction (NPSMAE),was applied to extraction of essential oils from Foeniculum vulgare Mill.. By adding microwave absorption medium (carbonyl iron powders) into extraction system, the non- polar solvent (ether) was heated by CIP and the essential oil was obtained at high pressure. The constituents of essential oil obtained by NPSMAE was compared with that obtained by hydrodistillation (HD) by GC/MS analysis. The main volatile constituents in extracts obtained by different methods were similar, which indicated that NPSMAE was a feasible way to extract essential oil from dried plant materials. The NPSMAE took much less extraction time (5 min) than HD (180 min). 相似文献
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建立了采用气相色谱-质谱(GC/MS)分析芳烃抽提环丁砜贫剂中各烃组分结构和含量的方法。并使用三因素三水平正交试验来确定最佳色谱分离条件。对芳烃抽提环丁砜贫剂中各烃组分进行定性,对所得质谱谱图解析,并结合质谱标准谱库检索,与各烃组分标准样品保留时间对照,可确定各烃组分结构。以正辛烷为内标物,内标法定量,采用扫描方式分析环丁砜贫剂中各烃组分含量。配制标准溶液,测定各烃组分的相对体积校正因子。样品中各烃组分含量测定的相对标准偏差均小于5%,回收率在91%~109%之间,完成一个样品的分析时间约14 min。与传统的蒸馏法相比,该方法更精确、灵敏、快速、简便,且无环境污染。 相似文献
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香附挥发油的提取和GC/MS分析 总被引:8,自引:0,他引:8
采用中药专用提取剂(PR溶剂)超声波振荡从香附中提取挥发油,用GC/MS法测定其化学成分和相对含量,主要成分为 α-可巴烯(1.97%)、香附烯(15.73%)、α-红没药烯(2.14%)、α-古芸烯(1.29%)、2-甲氧基-8-甲基-1,4-萘二酮(4.01%)、β-蛇床烯(17.99%)、氧化-α-依兰烯(3.00%)、4,4α,5,6,7,8-六氢-4α,5-二甲基-3-(1-甲基乙烯基)-2(3H)-萘酮(8.11%)、α-香附酮(26.15%)、长叶松香芹酮(1.11%)等,这些含量较多的成分占香附挥发油总量的81.50%,为建立香附挥发油质量标准提供了科学依据。 相似文献