Comparative analysis of volatile constituents between herbal pair flos lonicerae-caulis lonicerae and its single herbs

Gas chromatography-mass spectrometry(GC-MS) and the chemometric resolution method(alternative moving window factor analysis,AMWFA) were used for comparative analysis of volatile constituents in herbal pair(HP) flos lonicerae-caulis lonicerae(FL-CL) and its single herbs.The temperature-programmed retention index(PTRI) was also employed for the identification of compounds.In total,44,39,and 50 volatile chemical components in volatile oil of FL,CL and HP FL-CL were separately determined qualitatively and quantitatively,accounting for 87.22%,94.54% and 90.08% total contents of volatile oil of FL,CL and HP FL-CL,respectively.The results show that there are 32 common volatile constituents between HP FL-CL and single herb FL,33 common volatile constituents between HP FL-CL and single herb CL,and 10 new constituents in the volatile oil of HP FL-CL.     

Analysis of volatile components in herbal pair herba schizonepetae-ramulus cinnamomi

Analysis of volatile components in herbal pair （HP） herba schizonepetae-ramulus cinnamomi （HS-RC）, single herb HS and RC was carried out by gas chromatography-mass spectrometry （GC-MS） data and chemometric resolution method （CRM）. The two-dimensional data obtained from GC-MS instruments were resolved into a pure chromatogram and a mass spectrum of each chemical compound by CRM. In total, 47, 61 and 51 chemical components in volatile oil of HS, RC, and HP HS-RC were respectively determined qualitatively and quantitatively, accounting for 90.52%, 88.37%, and 88.72% total contents of volatile oil of HS, RC, and HP HS-RC, respectively. The number of the volatile components of HP HS-RC is almost the addition of that of two single herbs, but their relative contents are changed.     

Analysis of volatile components in herbal pair herba schizonepetae-ramulus cinnamomi

Analysis of volatile components in herbal pair (HP) herba schizonepetae-ramulus cinnamomi (HS-RC),single herb HS and RC was carried out by gas chromatography-mass spectrometry (GC-MS) data and chemometric resolution method (CRM).The two-dimensional data obtained from GC-MS instruments were resolved into a pure chromatogram and a mass spectrum of each chemical compound by CRM.In total,47,61 and 51 chemical components in volatile oil of HS,RC,and HP HS-RC were respectively determined qualitatively and quantitatively,accounting for 90.52%,88.37%,and 88.72% total contents of volatile oil of HS,RC,and HP HS-RC,respectively.The number of the volatile components of HP HS-RC is almost the addition of that of two single herbs,but their relative contents are changed.     

Chemical component and antimicrobial activity of volatile oil of Calycopteris floribunda

The volatile oil of leaves and barks of Calycopteris floribunda was examined by gas chromatography-mass spectrometry (GC-MS). 52 volatile chemical components in leaves were identified. The antimicrobial assay of oils in the leaves and barks was carried out by disk diffusion method in vitro. The major components (mass fraction) in leaves are caryophyllene oxide (13.79%), n-hexadecanoic acid (11.91%) and β-caryophyllene (10.45%). Ten constituents are identified accounting for about 99.98% of the total volatile oil in the bark. Among these components, n-hexadecanoic acid (59.18%), linolic acid (12.70%) and butyl octyl phthalate (8.21%) are the major constituents. The oils exhibit strong antimicrobial activity and display more potent against bacteria than fungi.     

GC-MS结合直观推导式演进特征投影法（HELP）分析大茴香和小茴香挥发性化学成分

采用GC-MS联用技术结合直观推导式演进特征投影法（HELP）对大茴香和小茴香挥发性化学成分进行比较分析.此外,程序升温保留指数用来辅助定性.共定性出17种挥发性化学成分,其中大茴香13种,小茴香11种,分别占二者挥发油总相对含量的89.43%和99.53%.共有组分7种.大茴香和小茴香的挥发油主要成分为茴香烯,含量分别为70.72%和85.82%.     

互叶白千层挥发性成分的提取和分析

采用水蒸气蒸馏法从互叶白千层叶及嫩枝中提取挥发油中的油相成分,用乙醚作为溶剂从蒸馏残液中萃取挥发油的水溶性物质,利用气相色谱-质谱（GC-MS）联用分析二者的化学成分并进行比较。互叶白千层挥发性成分的油相部分经鉴定确认了27种成分,占油相部分总量的98.60%,主要成分为松油烯-4-醇（52.15%）、γ-松油烯（19.60%）、α-松油烯（5.86%）、α-松油醇（3.93%）、对伞花烃（3.52%）、1,8-桉叶油素（2.67%）;水溶性部分经鉴定确认了61种成分,占水溶性部分总量的79.15%,主要成分为松油烯-4-醇（27.42%）、α-松油醇（6.55%）、香芹酚（5.00%）、1,8-桉叶油素（4.10%）。     

GC—MS联用技术分析徐长卿挥发性化学成分

采用GC．MS联用技术结合程序升温保留指数首次对山东平邑产徐长卿的不同药用部位的挥发油成分进行定性定量分析．共定性出29种挥发性化学成分,地下部分（根及根茎）15种,地上部分（茎和叶）22种,分别占二者挥发油总含量的99．64％和96．51％,共有组分8种．徐长卿地下和地上部分的挥发油主要成分为丹皮酚和邻羟基苯乙酮,其中邻羟基苯乙酮为新发现的主要化合物．二者中丹皮酚的含量分别为88．45％和66．30％,邻羟基苯乙酮的含量分别为8．89％和16．99％．徐长卿地下部分的挥发油含量比地上部分多,二者存在显著性差异．     

Chemical component analysis of volatile oil in drug pair Herba Ephedrae-Ramulus Cinnamomi by GC-MS and CRM

Active volatile components in drug pair(DP)Herba Ephedrae-Ramulus Cinnamomi(HE-RC),single drug HE and RC were analyzed by gas chromatography/mass spectrometry(GC/MS),chemometric resolution method(CRM)and overall volume integration.By means of CRM,the two-dimensional data obtained from GC-MS instruments were resolved into a pure chromatogram and a mass spectrum of each chemical compound.In total,97,62,and 78 volatile chemical components in volatile oil of HE,RC,and DP HE-RC,were respectively determined qualitatively and quantitatively,accounting for 90.08%,91.62%,and 89.76% total contents of volatile oil of HE,RC,and DP HE-RC respectively.It is further demonstrated that the numbers of volatile components of DP HE-RC are almost the sum of those of two single drugs,but some relative contents of them are changed.Some new components,such as 1,6-dimethylhepta-1,3,5-triene,tetracyclo[4.2.1.1(2,5).0(9,10)]deca-3,7-diene,globulol and(E,E)-6,10,14-trimethyl-5,9,13-pentadecatrien-2-one are found in DP HE-RC because of chemical reactions and physical changes during decoction.     

大花序桉叶精油的化学成分分析

采用水蒸汽蒸馏法提取大花序桉叶精油,通过气相色谱-质谱(GC-MS)联用分析鉴定其化学成分.首次从大花序桉叶精油中鉴定出34种化合物,鉴定精油成分占总精油质量分数的68.321%.大花序桉精油的主要成分是α-蒎烯(47.364%)、β-桉叶醇(2.457%)、γ-桉叶醇(1.955%)、α-桉叶醇(1.316%)和柠檬烯(1.427%),具有重要的工业应用价值.     

Determination of constituents of essential oil from Angelica sinensis by gas chromatographymass spectrometry

1INTRODUCTION TraditionalChinesemedicines(TCMs)are veryimportantduetotheirextensiveuseinpre ventingandcuringmanydiseasesforhumans.Al thoughonlysomecompoundsmightberesponsible forpharmaceuticaleffects,traditionalChinese medicinesusuallycontaintoomanycomponentsandformaverycomplexsystem,whichmakesthe screeningandanalysisofbioactivecomponentsex tremelydifficult[1]comparedwiththoseofwesternmedicines.Whensuchcomplexsamplesareana lyzed,itiscommonthatdifferentcontentsof multi componentsandgreatd…     

云南松花苞挥发性成分分析

采用氯仿提取云南松花苞中的化学成分,经GC/MS分析,从云南松花苞挥发油中分析鉴定出了49个挥发性成分,占峰面积的58.89%。化合物类型包括单萜、倍半萜、二萜、脂肪族和酚类化合物,其中二萜和单萜为主要成分;质量分数最高的是松香酸(18.91%),其次为脱氢松香酸(10.20%)和十二氢化-1,4a-二甲基-7-(1-甲基乙基)-1-菲甲酸(10.20%)。     

枫香与缺萼枫香果实挥发性成分的GC - MS分析

采用GC - MS法对枫香与缺萼枫香果实挥发性成分进行分析,在枫香果实挥发油中共检出35个成分,鉴定了29个成分,主要成分为β-蒎烯、1S-α-蒎烯和石竹烯,含量分别为16.69％、15.22％和12.54％;在缺萼枫香果实挥发油中共检出47个成分,鉴定了33个化合物,主要成分是β-蒎烯、1R-α-蒎烯和石竹烯,含量分别为22.10％、21.93％和11.41％,研究结果可为扩大枫香药用资源的应用及药材鉴定提供科学依据.     

Determination of volatile components in cut tobacco with gas chromatography-mass spectrometry and chemometric resolution

Chromatography-mass spectrometry(GC-MS)was used to analyze the volatile components of cut tobacco samples with the help of heuristic evolving latent projections(HELP).After extracting with simultaneous distillation and extraction method,the volatile components in cut tobacco were detected by GC-MS.Then the obtained original two-dimensional data were resolved into pure mass spectra and chromatograms.The qualitative analysis was performed by similarity searches in the national institute of standards and technology(NIST)mass database with the obtained pure mass spectrum of each component and the quantitative results were obtained by calculating the volume of total two-way response.The accuracy of qualitative and quantitative results were greatly improved by using the two-dimensional comprehensive information of chromatograms and mass spectra.107 of 141 separated constituents in the total ion chromatogram of the volatile components were identified and quantified,accounting for about 88.01% of the total content.The result proves that the developed method is powerful for the analysis of complex cut tobacco samples.     

做青湿度对岭头单枞乌龙茶香气成分影响的研究

用气相色谱—质谱法分析了岭头单枞乌龙茶不同湿度做青香气组分的变化 .结果表明 ,做青湿度是影响乌龙茶香气的重要因素 .高湿 ( 90 % )、低湿 ( 70 % )做青芳香物质种类少 ,精油总量低 ,特征组分含量低 ;中湿 ( 80 % )做青芳香物质种类多 ,精油总量高 ,特征组分含量高 .     

Determination of constituents of essential oil from Angelica sinensis by gas chromatography-mass spectrometry

Gas chromatography-mass spectrometry （GC-MS） coupled with chemometric resolution upon twodimensional data was employed to analyze the constituents of essential oils of Angelica sinensis. Constituents in essential oils of Angelica sinensis root were identified by GC-MS with the help of subwindow factor analysis （SFA） method resolving two-dimensional original data into mass spectra and chromatograms. 76 of 97 separated constituents in essential oil of Angelica sinensis root were identified and quantified, and they account for about 91.36% of the total content. The results show that ligustilide, butylene phthalide, 2-methoxy-4-vinylphenol, carvacrol, alloocimene, 2,6,6-trimethylbicyclo-[3,1,1] hept-2-ene are the main constituents in essential oil of Angelica sinensis root.     

不同部位北香薷挥发油的制备及化学成分分析

目的：研究花、茎、叶不同部位北香薷挥发油的制备及化学成分分析。方法：采用水蒸气蒸馏法制备挥发油,运用气相色谱-质谱(GC-MS)技术鉴定香薷挥发油的化学成分,纸片法考察抑菌活性。结果：GC-MS分析鉴定出香薷花、茎、叶成分含量较高的分别为BETA-去氢香薷酮、1,1'-[亚乙基双(氧基)]二丁烷、BETA-去氢香薷酮,抑菌试验。结果表明北香薷三个部位对金黄色葡萄球菌、枯草和短小芽孢杆菌、白色念珠菌有不同程度抑制作用。结论：北香薷不同部位挥发油的化学成分不同、抑菌活性也有差异,本研究为北香薷挥发油的开发利用提供依据。     

运用气相色谱-质谱(GC-MS)联用法对牛至挥发油化学成分的分析

牛至挥发油因具有镇痛、抗菌、抗病毒等作用,在临床上用于预防流感、治疗黄疸等疾病.采用超临界CO2技术萃取牛至挥发油,并用GC-MS分析其化学组成,共确定46组分,占总含量的90.347%,其中包括酸、酯、烯、酚、炔、醇等多种化合物,含量最多有麝香草酚(14.109%)和1-甲基-2-异丙基-苯(14.610%).     

不同方法提取樟树落叶挥发油的比较

采用水蒸气蒸馏法（HD）、微波辅助-水蒸气蒸馏法（MAHD）和微波无溶剂提取法（SFME）提取樟树落叶挥发油,用气相色谱-质谱及峰面积归一化法对挥发油成分进行分析鉴定.实验结果表明,3种方法提取的挥发油提取率接近,水蒸气蒸馏法为0.98％,微波辅助-水蒸气蒸馏法为1.12％,微波无溶剂提取法则为1.04％.3种方法提取的挥发油共鉴定出29种化合物,单萜类氧化物和倍半萜氧化物为挥发油的主要成分;HD所得挥发油中香樟醇、桉树叶醇、樟脑和α-松油醇的质量分数分别为25.58％、21.26％、16.79％和11.19％,MAHD为26.29％、28.72％、15.64％和10.16％,SFM为17.74％、17.74％、17.74％和12.46％.不同方法提取的樟树落叶挥发油提取率及成分总体相近,但也存在一定差异,这为进一步开发利用樟树落叶提供了一定的实验依据.     

湖北长阳绿茶挥发油成分的GC／MS分析

用气相色谱／质谱联用法分析了湖北长阳绿茶挥发油的化学成分，分离出93个组分，鉴定了84个化合物，挥发油中含芳樟醇、香叶醇、香茅醇等多种香气成分。     

板蓝根挥发性成分的GC-MS分析及抗菌抗氧化活性研究

通过气相色谱–质谱 (GC-MS) 对板蓝根挥发性成分的化学组成进行分析,并通过 Kirby-Bauer 药敏纸片法、普鲁士蓝法、铁还原抗氧化能力 (FRAP) 和 1,1-二苯基-2-三硝基苯肼自由基 (DPPH·) 清除法研究其体外抗菌和抗氧化活性. 结果表明,板蓝根挥发性成分的质量分数较低 (0.038%),通过NIST数据库分析从中鉴定出60种化学成分,主要包括异硫氰酸酯、芳香烃类、羧酸类等. 板蓝根挥发性成分对大肠杆菌、金黄色葡萄球菌有一定抑菌作用,平均抑菌圈直径分别为8.1和6.5 mm;板蓝根挥发性成分具有较好的还原能力,对DPPH自由基清除效果明显, IC₅₀值为7.169 mg/mL.