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顶空萃取-气相色谱-质谱法分析马鞭草的挥发油组分 总被引:2,自引:0,他引:2
杨再波 《理化检验(化学分册)》2008,44(6)
采用顶空萃取-气相色谱-质谱法分离和鉴定马鞭草挥发油化学成分,用归一化法测定其相对含量.鉴定出64个组分,其含量占总挥发油组分峰面积的97.76%.主要成分是乙酸(3.55%)、芳樟醇(4.41%)、反-石竹烯(9.30%)、反-β-金合欢烯(3.99%)、律草烯(5.61%)、α-姜黄烯(8.50%)、十五烷(8.48%)、γ-芹子烯(3.75%)、β-没药烯(5.66%)、β-杜松烯(3.57%). 相似文献
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研究紫罗兰花挥发油的挥发性成分及其卷烟加香效果。采用同时蒸馏萃取法提取紫罗兰花挥发油,利用气相色谱—飞行时间质谱(GC-TOFMS)联用技术对其化学成分进行分离鉴定,采用峰面积归一化法计算各个组分相对含量,并将其加入卷烟中进行感官评吸。共鉴定了66个化合物,占检出化合物总量的79.03%,主要成分为2-β-蒎烯(13.28%)、3-蒈烯(10.16%)、(-)-异喇叭烯(4.80%)、β-波旁烯(4.53%)、斯巴醇(3.39%)和β-杜松烯(3.29%)等;评吸结果发现:适量浓度的紫罗兰挥发油能提高卷烟整体的协调性,提升卷烟的香气质和香气量,降低对口腔、鼻腔的刺激性,减少杂气,回味甜香,余味清爽。紫罗兰挥发油中化学成分丰富,主要为萜类及其含氧衍生物,其中,许多化合物具有芳香性和药用活性。 相似文献
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研究香青花与叶挥发油的化学成分。采用同时蒸馏萃取法(SDE)提取香青花与叶中的挥发油,使用气相色谱-质谱联用技术(GC-MS)获得总离子流图,各色谱峰相应的质谱图经过NIST11.L标准谱库检索,辅助保留指数比对定性,并采用峰面积归一化法进行定量分析,计算各成分的相对百分含量。从香青花与叶挥发油中共鉴定出41种物质,相同成分有15种,花与叶挥发油的化学成分含量差异较大,其中花挥发油中主要成分为α-葎草烯(13.46%)、环氧化葎草烯II(8.97%)、Ar-姜黄烯(8.50%)、δ-杜松烯(6.99%)等;叶挥发油中主要成分为α-葎草烯(17.47%)、α-蒎烯(15.17%)、Ar-姜黄烯(8.27%)、(E)-石竹烯(6.06%)等。采用GC-MS法结合保留指数鉴别香青花与叶挥发油中的同分异构体,提高了药用植物不同部位挥发油成分定性的准确性,为香青药用价值的开发和应用提供了参考。 相似文献
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槐花样品经蒸气蒸馏及乙醚萃取处理所得挥发油,用气相色谱-质谱联用法进行分析,按峰面积归一化法求出挥发性化学成分的相对含量.分离出42个峰,已鉴定了26个化合物,占其挥发油总相对含量的87.76%.已鉴定的有酸、酯、烯烃、醇、烷烃等10类化合物.其中酸类化合物占总色谱流出峰面积的30.53%,酯类占19.26%,烯烃类占18.01%,醇类占8.64%,烷烃类占5.52%.其主要组分有n-十六酸(26.43%)、17-三十五(烷)烯(14.84%)、喇叭茶萜醇(8.00%)、十六酸甲酯(4.18%)、肉豆蔻酸(4.10%)、8,11-十八碳二烯酸甲酯(3.79%)、月桂酸酐(3.60%)、9-十八(碳)炔酸甲酯(3.26%)、1,2-邻苯二甲酸丁基环己基酯(3.03%)、c-榄香烯(2.66%). 相似文献
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采用超临界CO2萃取,应用气相色谱-质谱联用(GC-MS) 法鉴定碧桃花、叶、茎、果实挥发油中化学成分和相对质量浓度,共鉴定178个化合物。 其中花挥发油中主要成分有苯甲醛(11.42%)、α-金合欢烯(9.18%)、十六烷酸(8.03%)。叶挥发油中主要成分有:苯甲醛(14.72%)、二十五烷(9.85%)、二十八烷(8.29%)、二十三烷(5.14%)。 茎挥发油中主要成分有(Z)-3-己烯-1-醇(28.90%)、(E)-2-己烯醇(16.06%)、正己醇(6.86%)。 果实挥发油中主要成分有:苯甲醛(20.46%)、十六烷酸(5.84%)、苯甲醇(5.01%)。 在10~40 d贮藏期内,花、叶、茎、果实挥发油可明显降低花生油的过氧化值和酸值,其中以茎挥发油高剂量组降低作用最强。 花和茎挥发油具有较强的抑菌作用,其最小抑菌浓度(MIC)值在0.024~0.188 g/L范围内。 相似文献
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基于组效关系的姜黄挥发油抗肿瘤活性成分辨识研究 总被引:1,自引:0,他引:1
基于GC-MS分析,建立了姜黄挥发油的化学成分与其抑制人宫颈癌Hela细胞作用的组效关系模型,寻找与药效显著相关的活性成分。采用水蒸汽蒸馏法提取得到31批姜黄挥发油,提取率在1.63%~4.52%之间;采用GC-MS联用仪建立了31批姜黄挥发油的指纹图谱,确定了20个特征峰,以特征峰的相对峰面积(各峰面积与内标正十三烷的峰面积之比)来表征其相对含量;MTT法测定姜黄挥发油抑制人宫颈癌Hela细胞活性,以抑制率为评价指标;利用Simca-p11.5软件的正交投影偏最小二乘法(Orthogonal Partial leastsquares,OPLS)和SPSS软件的双变量相关(bivariate)分析,研究特征峰与药效的相关性,根据S-载荷图、变异权重参数值(Variable importance in projection,VIP)和皮尔逊(Pearson)相关系数来辨识显著活性成分。结果表明,11,15,7,19,3,6,12,14,9号等9个特征峰与姜黄挥发油抑制Hela细胞活性显著相关,除19号峰尚未定性外,11,15,7,3,6,12,14和9号峰对应的成分分别为芳姜黄酮、β-姜黄酮、姜烯、β-榄香烯、α-姜黄烯、α-姜黄酮、吉马酮和β-倍半水芹烯。 相似文献
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González-Chávez MM Cárdenas-Ortega NC Méndez-Ramos CA Pérez-Gutiérrez S 《Molecules (Basel, Switzerland)》2011,16(3):2501-2506
The chemical composition of the essential oil from Hesperozygis marifolia was analyzed by gas chromatography-mass spectrometry (GC-MS), and fourteen compounds were identified. (R)-pulegone (40.75%), isomenthone (30.34%) and menthone (4.46%) were found to be the main components of the oil. The essential oil at a concentration of 2.0 mg/mL and (R)-pulegone at concentration of 0.8 mg/mL completely inhibited the growth of Aspergillus flavus Link. The fungicidal effects of this essential oil warrant further research into its potential for commercial use. 相似文献
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Afoulous S Ferhout H Raoelison EG Valentin A Moukarzel B Couderc F Bouajila J 《Molecules (Basel, Switzerland)》2011,16(10):8273-8291
Helichrysum gymnocephalum essential oil (EO) was prepared by hydrodistillation of its leaves and characterized by GC-MS and quantified by GC-FID. Twenty three compounds were identified. 1,8-Cineole (47.4%), bicyclosesquiphellandrene (5.6%), γ-curcumene (5.6%), α-amorphene (5.1%) and bicyclogermacrene (5%) were the main components. Our results confirmed the important chemical variability of H. gymnocephalum. The essential oil was tested in vitro for cytotoxic (on human breast cancer cells MCF-7), antimalarial (Plasmodium falciparum: FcB1-Columbia strain, chloroquine-resistant) and antioxidant (ABTS and DPPH assays) activities. H. gymnocephalum EO was found to be active against MCF-7 cells, with an IC(50) of 16 ± 2 mg/L. The essential oil was active against P. falciparum (IC(50) = 25 ± 1 mg/L). However, the essential oil exhibited a poor antioxidant activity in the DPPH (IC(50) value > 1,000 mg/L) and ABTS (IC(50) value = 1,487.67 ± 47.70 mg/L) assays. We have reviewed the existing results on the anticancer activity of essential oils on MCF-7 cell line and on their antiplasmodial activity against the P. falciparum. The aim was to establish correlations between the identified compounds and their biological activities (antiplasmodial and anticancer). β-Selinene (R2 = 0.76), α-terpinolene (R2 = 0.88) and aromadendrene (R2 = 0.90) presented a higher relationship with the anti-cancer activity. However, only calamenene (R2 = 0.70) showed a significant correlation for the antiplasmodial activity. 相似文献
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The chemical composition of the essential oil (EO) obtained from the aerial parts of Rydingia michauxii (Briq.) Scheen & V.A. Albert was analysed by gas chromatography and gas chromatography/mass spectrometry (GC/MS). Eighty components were identified in the oil with caryophyllene oxide (20.1%), trans-verbenol (10.2%), linalool (5.3%) and humulene epoxide II (4.6%) as main constituents. We reported here the chemical compositions of R. michauxii EOs from southern Zagros of Iran with a distinct chemical profile for the first time. 相似文献
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Huang HC Chang TY Chang LZ Wang HF Yih KH Hsieh WY Chang TM 《Molecules (Basel, Switzerland)》2012,17(4):3902-3916
This study was aimed at investigating the antimelanogenic and antioxidative properties of the essential oil extracted from leaves of V. negundo Linn and the analysis of the chemical composition of this essential oil. The efficacy of the essential oil was evaluated spectrophotometrically, whereas the volatile chemical compounds in the essential oil were analyzed by gas chromatography-mass spectrometry (GC-MS). The results revealed that the essential oil effectively suppresses murine B16F10 tyrosinase activity and decreases the amount of melanin in a dose-dependent manner. Additionally, the essential oil significantly scavenged 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radicals, and showed potent reducing power versus metal-ion chelating properties in a dose-dependent pattern. The chemical constituents in the essential oil are sesquiterpenes (44.41%), monoterpenes (19.25%), esters (14.77%), alcohols (8.53%), aromatic compound (5.90%), ketone (4.96%), ethers (0.4%) that together account for 98.22% of its chemical composition. It is predicted that the aromatic compound in the essential oil may contribute to its antioxidant activities. The results indicated that essential oil extracted from V. negundo Linn leaves decreased melanin production in B16F10 melanoma cells and showed potent antioxidant activities. The essential oil can thereby serve as an inhibitor of melanin synthesis and could also act as a natural antioxidant. 相似文献
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Verma RS Padalia RC Saikia D Chanotiya CS Chauhan A Krishna B 《Natural product research》2012,26(13):1257-1260
Essential oil isolated from the inflorescences of Capillipedium parviflorum (R. Br.) Stapf., collected from Kumaon region of Western Himalaya, India, was investigated by GC and GC-MS. A total of 45 constituents representing 99.0% of the essential oil were identified. The major components of this oil were 4-undecanone (33.2%), 4-undecanol (29.7%), 4-nonanol (13.9%), α-muurolol (5.3%), 4-tridecanone (3.6%), methyl-2-oxo-nonanoate (3.1%), trans-2-hexenyl butanoate (1.1%) and 1-tetradecanol (1.0%). The antimicrobial activity of the essential oil was determined against eight Gram-positive and Gram-negative bacterial strains, as well as two fungal strains. The bioassay showed that the essential oil possessed good antibacterial activity. 相似文献
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Chemical composition and antibacterial activity of the essential oil from Pyrrosia tonkinensis (Giesenhagen) Ching 总被引:1,自引:0,他引:1
The present study aimed to analyse the chemical components of the essential oil from Pyrrosia tonkinensis by GC-MS and evaluate the in vitro antibacterial activity. Twenty-eight compounds, representing 88.1% of the total essential oil, were identified and the major volatile components were trans-2-hexenal (22.1%), followed by nonanal (12.8%), limonene (9.6%), phytol (8.4%), 1-hexanol (3.8%), 2-furancarboxaldehyde (3.5%) and heptanal (3.1%). The antibacterial assays showed that the essential oil of P. tonkinensis had good antibacterial activities against all the tested microorganisms. This paper first reported the chemical composition and antimicrobial activity of the essential oil from P. tonkinensis. 相似文献
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Miladinović DL Ilić BS Mihajilov-Krstev TM Nikolić ND Miladinović LC Cvetković OG 《Analytical and bioanalytical chemistry》2012,403(4):1007-1018
The antibacterial effects of Thymus vulgaris (Lamiaceae), Lavandula angustifolia (Lamiaceae), and Calamintha nepeta (Lamiaceae) Savi subsp. nepeta var. subisodonda (Borb.) Hayek essential oils on five different bacteria were estimated. Laboratory control strain and clinical isolates from
different pathogenic media were researched by broth microdilution method, with an emphasis on a chemical composition–antibacterial
activity relationship. The main constituents of thyme oil were thymol (59.95%) and p-cymene (18.34%). Linalool acetate (38.23%) and β-linalool (35.01%) were main compounds in lavender oil. C. nepeta essential oil was characterized by a high percentage of piperitone oxide (59.07%) and limonene (9.05%). Essential oils have
been found to have antimicrobial activity against all tested microorganisms. Classification and comparison of essential oils
on the basis of their chemical composition and antibacterial activity were made by utilization of appropriate chemometric
methods. The chemical principal component analysis (PCA) and hierachical cluster analysis (HCA) separated essential oils into
two groups and two sub-groups. Thyme essential oil forms separate chemical HCA group and exhibits highest antibacterial activity,
similar to tetracycline. Essential oils of lavender and C. nepeta in the same chemical HCA group were classified in different groups, within antibacterial PCA and HCA analyses. Lavender oil
exhibits higher antibacterial ability in comparison with C. nepeta essential oil, probably based on the concept of synergistic activity of essential oil components. 相似文献
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《Journal of Saudi Chemical Society》2014,18(6):972-976
The composition of essential oil extracted from Rhaponticum acaule L. roots growing wild in Algeria was studied by hydrodistillation (HD) and by Head-Space Solid Phase Micro-Extraction (HS-SPME). Quantitative but not qualitative differences have been found in the chemical composition of both analysed samples depending on the extraction method. However, the oil obtained from R. acaule roots shows that aliphatic alcohols were found to be the major class (69.2%), followed by the terpenes (5.5%), alkenes (5.2%) and alkynes (4.0%). In both cases the analysis were carried out using Gas Chromatography (GC) and Gas Chromatography–Mass Spectrometry (GC–MS). Our study shows that HS-SPME extraction could be considered as an alternative technique for the isolation of volatiles from plant. 25 components were identified in oil vs. 39 in the HS-SPME. However the oil composition of roots was mainly represented by a variety of aliphatic hydrocarbons (alcohols, aldehydes and ketones) and terpenes which are known for their antimicrobial activities. 相似文献
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AbstractThe present study investigated the chemical compositions and antimicrobial activities of essential oil from Pterocarya stenoptera. The essential oil obtained by hydrodistillation from the dried leaves of P. stenoptera was analysed by GC–MS and 39 constituents accounting for the total 90.44% of the oil were identified. The main constituents were δ-cadinene (24.83%), caryophyllene oxide (9.10%), α-cadinol (7.48%) and β-elemene (6.24%). The antimicrobial activity of the oil was evaluated by disc diffusion and broth microdilution methods. The essential oil was found to show broad-spectrum antimicrobial activities against all the tested microorganisms. Bacillus subtilis was the most sensitive strain with the minimum inhibitory concentration of 0.23?mg/mL. The results suggested that the essential oil was a potential source of natural antimicrobials in food preservation and pharmaceutical industry. 相似文献