苦碟子挥发油化学成分的分析

对我国东北地产苦碟子中挥发油成分进行系统分析,确定挥发油的化学成分,为阐述其生物活性提供依据.采用水蒸汽蒸馏法提取挥发油,气相色谱--质谱联用仪进行分析.结果鉴定出37种化合物.在这些化合物中,脂肪烷烃类占53.21%,酮、醛类占39.05%,烯、烯醇、烯酸类占4.94%,酯类占1.57%.其挥发油的主要成分是6,10,14-三甲基-2-十五烷酮,含量为33.98%.     

气相色谱-质谱法测定艾叶挥发油中化学成分

采用水蒸气蒸馏法提取艾叶的挥发油,用气相色谱-质谱法分离和鉴定挥发油成分,并用归一化法测定其相对含量。共分离出76个组分,鉴定出59种化合物。其含量占总挥发油组分峰面积的94.3%。贵州遵义产艾叶主要挥发油成分及其含量为1,8-桉叶油素(22.19%)、樟脑(10.39%)、绿花白千层醇(6.57%)、蒿醇(4.95%)、L-龙脑(4.88%)、α-松油烯(3.98%)、蒿酮(3.44%)、顺式桧烯水合物(3.36%)、4-松油醇(2.68%)、菊油环酮(2.51%)、β-崖柏酮(2.41%)、1-松油醇(2.32%)和丁香酚(2.26%)等。     

吉祥草挥发油化学成分的研究

对贵州产吉祥草的挥发性化学成分进行分析.采取同时蒸馏萃取法提取吉祥草挥发油,用GC-MS分析吉祥草挥发油的化学成分.通过计算机检索,共鉴定出58个化合物,其峰面积相对含量占挥发油总量的81.75%,其主要化合物为反式-石竹烯(7.01%)、芳樟醇L(6.97%)、松油酮(5.45%)等.     

顶空固相微萃取-气相色谱-质谱法分析莪术的挥发油成分

采用顶空固相微萃取-气相色谱-质谱法分离和鉴定莪术挥发油成分,用归一化测定其相对含量。共分离出64个组分,鉴定出57种化合物,其含量占总挥发油组分峰面积98.02%。主要挥发成分及其含量为β-榄香稀(18.73%)、β-榄烯酮(11.03%)、莪术二酮(8.47%)、γ-榄香稀(6.79%)。     

超临界CO2萃取与水蒸气蒸馏法研究泽兰中挥发性有机物

以超临界CO2萃取法(SFE)提取中药泽兰中的挥发性有机物,经气相色谱-质谱联用(GC-MS)分析,人工解析质谱图及计算机谱库检索相结合进行化学成分结构鉴定,用面积归一化法计算各组分的相对含量。SFE法提取的产率为0.78%,共鉴定75种挥发性化合物,主要成分为植醇、石竹烯氧化物、十六酸、亚油酸、葎草烯等,比文献报道的该挥发油成分多且含量差异较大,其中松香芹醇、蒲勒烯、马鞭烯酮、香芹酮、十六酸、亚油酸、葎草烯、十六酸乙酯、亚麻酸等多种成分未见报道。与水蒸气蒸馏法(SD)提取的泽兰挥发油进行比较,后者提取的产率为0.12%,从中鉴定出50种化合物,主要成分为石竹烯氧化物、柠檬烯、α-蒎烯、葎草烯、月桂烯等。SFE与SD得到的成分仅有31种相同,其它各不相同。     

紫罗兰花挥发油化学成分分析及其在卷烟加香中的评价

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。     

艾叶挥发性成分的提取及其化学成分的气相色谱/质谱分析

采用常温下氮气吹扫－固体吸附剂吸附和水蒸汽蒸饱辆途中方法,提慑富集区叶的近轨必成分,经气相色谱－质谱联机分析,鉴定出３９种化合物,主要是１,８－桉树脑、异蒿属（甲）酮、２－莰酮、２－莰酮、石竹烯、α－荜澄茄烯等。     

气相色谱/质谱法分析曼陀罗果实挥发油的化学成分

用水蒸汽蒸馏法从曼陀罗果实中提取挥发油,并用气相色谱/质谱(GC/MS)联用技术对其化学成分进行分离和结构鉴定,用峰面积归一化法确定各成分的相对含量。结果确定了68种化合物,占挥发油总量的82.83%,其主要成分为6-戊基-5,6-二氢化吡喃-2-酮(9.13%)、3,7,11,15-四甲基-2-十六碳烯-1-醇(6.71%)、二苯酮(6.16%)和1-己醇(6.10%)等。     

气相色谱-质谱技术分析姜油树脂中的挥发性及非挥发性成分

用超临界CO2萃取生姜根茎中的姜油树脂,并用气相色谱-质谱联用技术对其进行了成分分析。从姜油树脂中分析出77种化合物,其中挥发油成分50种,主要是α-姜烯(22.29%)、 β-倍半水芹烯(8.58%)、α-法尼烯(3.93%)、 β-没药烯(3.87%)和α-姜黄烯(2.63%)等倍半萜类化合物;姜辣素成分27种,主要成分为6-姜酚(9.38%)、6-姜烯酚(7.59%)和分析过程中由姜酚类或姜烯酚类化合物受热分解而形成的姜油酮(9.24%)。在姜辣素成分中,6-异姜酚、(Z)-10-异姜烯酚和(E)-10-异姜烯酚3种化合物是新发现的未见报道的化合物。实验中对这3种新化合物进行了质谱裂解分析。     

固相微萃取-气相色谱-质谱法测定千里光的挥发油成分

采用固相微萃取-气相色谱质谱法分离和鉴定千里光挥发油成分,用归一化法测定其相对含量。共分离出93个组分,鉴定出71种化学物,其含量占总挥发油组分峰面积的96.39%。主要挥发成分及其含量为十四烯(11.55%)、4乙烯基苯酚(10.99%)、δ-榄香烯(10.25%)、4-乙烯基-2甲氧基-苯酚(9.75%)、莰烯(8.7%)、(E,E)-α-金合欢烯(7.1%)和三环烯(4.6%)等。     

A phenolic glycoside from artemisia sacrorum

A phenolic glycoside has been isolated from Artemisia sacrorum grown in the Northeast of China. This compound is identified to be 4-O-β-D-glucopyranosyl-2-O-methylphloroacetophenone by means of nmr spectroscopy and synthesis.     

Essential oils of some artemisia species from Central Asia

Water distilled essential oils from aerial parts of the following Artemisia species (Compositae) were analyzed by GC/MS. The major component of the oils were as follows: 1,8-cineole inA. balchanorum (29.9%), camphor inA. leucodes (58.4%), andA. rhodantha (35.5%) and methyl eugenol inA. scoparia (27.5%).Materials presented at the 2nd International Conference of Natural Compounds.Published in Khimiya Prirodnykh Soedinenii, No. 3, pp. 383–385, May–June, 1997.     

藜蒿中黄酮类化合物的微波辅助萃取研究

应用密闭微波萃取装置,分别对藜蒿茎和藜蒿叶中黄酮类化合物进行微波萃取研究。采用正交试验方法得到微波提取藜蒿中黄酮类化合物的最佳条件。微波提取藜蒿茎的最佳条件为乙醇体积分数70％,微波功率800W,提取温度80℃和料液比1：20;微波提取藜蒿叶的最佳条件为乙醇体积分数70％,微波功率600W,照射时间12min,提取温度70℃和料液比1：20;在最佳条件下,藜蒿茎和叶中总黄酮提取率分别为6．43％和7．01％。并将微波萃取与乙醇回流提取进行了比较。     

Synthesis and crystal structure of a pyrazole derivative of artemisia ketone

The oxime of artemisia ketone is smoothly converted to the pyrazole derivative by sodium nitrite and acetic acid in CHCl₃. The structure of the pyrazole was found by x-ray structural analysis. The PMR and¹³C NMR spectra were interpreted using two-dimensional¹H–¹³C NMR (COSY, COLOC).Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 121–123, March–April, 2000.     

Isolation and structure elucidation of two new compounds from artemisia Ordosica Krasch

Abstract

Two new compounds, namely arteordoyn A (1) and arteordoyn B (2), together with four known compounds, were isolated from the petroleum ether extract of Artemisia ordosica Krasch. The structures elucidation of 1 and 2 were carried out by 1D-NMR (¹H and ¹³C NMR), 2D-NMR (COSY, HSQC, HMBC and NOESY) and HR-ESI-MS spectral analysis.     

The artemisia L. Genus: a review of bioactive essential oils

Numerous members of the Anthemideae tribe are important as cut flowers and ornamental crops, as well as being medicinal and aromatic plants, many of which produce essential oils used in folk and modern medicine and in the cosmetics and pharmaceutical industry. Essential oils generally have a broad spectrum of bioactivity, owing to the presence of several active ingredients that work through various modes of action. Due to their mode of extraction, mostly by distillation from aromatic plants, they contain a variety of volatile molecules such as terpenes, phenol-derived aromatic and aliphatic components. The large genus Artemisia L., from the tribe Anthemideae, comprises important medicinal plants which are currently the subject of phytochemical attention due to their biological and chemical diversity. Artemisia species, widespread throughout the world, are one of the most popular plants in Chinese traditional preparations and are frequently used for the treatment of diseases such as malaria, hepatitis, cancer, inflammation and infections by fungi, bacteria and viruses. Extensive studies of the chemical components of Artemisia have led to the identification of many compounds as well as essentials oils. This review summarizes some of the main reports on the chemistry and anti-infective activities of Artemisia. Li. essential oils from the data in the recent literature (2000-2011).     

蒙古蒿精油化学成份的研究I.

The chemical constituents of the essential oil from the leaves of artemisia mongolica Fisch. were separated by gas chromatography employing glass capillary eolumns and identified by GC-MS-COM. 30 components have been separated and identified, i.e. 2-methyl-2-butene, methylene cyclopentane, 7,7-dimethyl-3-methylen-bicyclo-(3, 1, 1) heptane, α-thujene, α-pinene, camphene, 1-octen-3-o1, β-thujene, β-pinene, α-phellandrene, bornylene, p-cymene, terpinen-1-o1, artemisia ketone, γ-terpinene, β-terpineol, 3,7,7-trimethyl-bicyclo-(3, 1,1)-2-heptanol, α-terpinolene, verbenone, linalool iso-thujone, thujone, camphor, isopulegone, isoborneol, terpinen-4-o1, α-terpineol, myrtenol, trans- carveol, cis-carveol.