首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到17条相似文献,搜索用时 125 毫秒
1.
毛樱桃叶片挥发油成分GC-MS分析   总被引:1,自引:0,他引:1  
采用GC—MS技术,分析了毛樱桃叶片中的挥发性成分.气相色谱共检测出163个峰,经与质谱标准图谱比较,鉴定了其中15种化学成分,其中含量较高的为棕榈酸酐、12E-11-甲基乙酸十四烯酯和十四酸甲基乙酯(相对百分含量分别为25.104%,4.873%和2.811%).  相似文献   

2.
猕猴桃果酒香气成分的气相色谱/质谱分析   总被引:27,自引:0,他引:27  
李华  涂正顺  王华  刘芳  李可昌 《分析化学》2002,30(6):695-698
采用溶液萃取法提取猕猴桃果酒中的香气成分,经气相色谱-质谱联机分析,分离出44个峰,鉴定出42种化合物,占总峰面积的94.51%。其中主要为3-甲基丁醇、2-甲基丙醇、苯乙醇、乙酸乙酯、四氢化2-甲基噻吩、辛酸、二氢化-2(3H)-呋喃酮、乙酸3-甲基丁酯、己酸、1H-吲哚-3-乙醇等。  相似文献   

3.
气相色谱/质谱法分析曼陀罗果实挥发油的化学成分   总被引:5,自引:0,他引:5  
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。  相似文献   

4.
蓝布正挥发油化学成分的GC-MS分析   总被引:7,自引:0,他引:7  
研究贵州产蓝布正(Herba Gei)挥发油的化学成分,采用水蒸气蒸馏法提取蓝布正挥发性成分,用气相色谱-质谱进行分离测定,结合计算机检索技术对分离的化合物进行鉴定,应用色谱峰面积归一化法测定各成分的相对含量;水蒸气蒸馏提取物得率是0.10%,共分离出103种成分,鉴定出40个化学成分,其主要成分为脂肪酸及其甲酯类化合物、萜烯类及其含氧衍生物等,主要有棕榈酸(13.2%)、11,14,17-二十碳三烯酸甲酯(10.4%)、亚油酸(8.6%)、石竹烯氧化物(3.9%)、丁子香酚(3.4%)和反式-植醇(3.2%)等。  相似文献   

5.
用水蒸气蒸馏法从康定鼠尾草花中提取挥发油,并用气相色谱/质谱联用技术(GC-MS)对挥发油的化学成分进行分离鉴定,用气相色谱峰面积归一化法确定各组分的相对含量,结果从康定鼠尾草花挥发油中鉴定出89种化合物,占总挥发油量的95%以上,其中主要成分是二苯胺(21.528%)、芳樟醇(9.873%)、2-丙酮基-3-蒈烯(7.533%)、1,3,3-三甲基-2-丁酮-环己二烯(5.088%)。本文通过对康定鼠尾草花挥发油化学成分的研究,为鼠尾草资源的进一步开发利用提供实验依据。  相似文献   

6.
采用水蒸汽蒸馏法从雪香兰中提取挥发油,利用GC—Ms联用仅对其化学成分进行分析,用归一化法计算各组分的相对百分含量。经毛细管气相色谱分离出33个峰,共确认了其中31种成分,占总油量的98%。其主要成分是斯巴醇、α-石竹烯、1-乙烯基-1-甲基-2-(1-甲基乙烯基)4-(1-甲基二乙烯基)-环己烷、3,7,11-三甲基.1,6,10-十二碳三烯-3-醇等。  相似文献   

7.
运用静态顶空-毛细管气相色谱-质谱法对天然香精中挥发性化学成分进行了分析,采用质谱和保留指数检索结合的方法对香精中挥发性成分进行定性分析;对香精顶空分析条件进行了优化,在香精样品中加入适量饱和NaCI溶液,显著地提高了低极性挥发性组分的分析灵敏度;从该香精中检出了68个化合物,将峰面积归一化结果大于0.1%的60种挥发性成分进行了定性分析,并通过保留指数分析对其中45种化合物进行了确认;分析结果表明:香精中含有萜类(30.3%)、萜类衍生物(11.7%)、酚醚类(17.0%)、脂肪酸酯(20.9%)和一些小分子的缩醛类化合物(17.7%),其中主要的挥发性成分为丁酸-1,1-二甲基-苯基乙酯(18.9%)、茴香脑(15.6%)、2-乙基-4-甲基-1,3-二氧戊环(9.8%)和β-石竹烯(7.7%);对方法精密度进行考察.相对标准偏差(RSD)在0.62—9.36之间。  相似文献   

8.
运用水蒸气蒸馏和乙醇提取两种方法分别提取茭白中的化学成分,气相色谱-质谱联用技术进行分离鉴定,面积归一法进行定量分析。并对两种方法所得结果进行比较,分析其中的差异之处。结果显示,水蒸气蒸馏提取物中共分离出106种组分(占总峰面积的82.07%),其中棕榈酸(16.89%)、己二酸二(2-乙基己)酯(6.39%)、油酸酰胺(5.64%)、亚油酸(3.84%)和油酸(3.64%)为主要组分。乙醇提取物中共分离出89种组分(占总峰面积的91.75%),其中棕榈酸(33.71%)、油酸(11.24%)、2-羟基-1-(羟甲基)棕榈酸乙酯(6.84%)、反油酸乙酯(4.93%)和亚油酸乙酯(3.88%)为主要成分。还鉴定出香兰素、月桂酸、茉莉酸等香味成分,以及花生四烯酸等活性组分。结果表明,茭白中的化学成分十分丰富,两种方法提取的成分及其总量存在一定差异。  相似文献   

9.
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   

10.
气相色谱-质谱法分析蘘荷花穗挥发油化学成分   总被引:3,自引:0,他引:3  
采用水蒸气蒸馏法提取黔产蘘荷花穗挥发油,并用气相色谱-质谱对其成分进行定性分析和峰面积相对含量的测定.共鉴定出45个化学成分,占挥发油总量的95.89%.主要成分为β-水芹烯(34.96%)、α-律草烯(13.09%)、β-榄香烯(7.31%)、β-蒎烯(6.50%)、α-水芹烯(6.07%)、α-蒎烯(3.87%)、β-石竹烯(3.18%)等。  相似文献   

11.
魏垠  张秀  黄爱今 《分析化学》2001,29(2):195-198
利用同时蒸馏萃取法(SDE)提取五灵中的挥发性组分。SE-54柱和PEG-20M柱上用气相色谱-质谱法分别检出122个和96个峰。其中有51种峰质谱检索结果相同,它们占总峰面积的56.3%。进一步用程序升温保留指数确认了其中33种化合物,占总峰面积的35.7%。含量较高的组分有:十二酸(7.00%),α-雪松醇(4.41%),四甲基吡嗪(4.10%),寸上酸(3.37%),1-(3-甲苯基)乙酮(2.53%),苯甲醛(2.42%),2-甲氧基苯酚(2.11%)。从化合物的种类来看,主要为醇类(10种),酮类(8种),醛类(8种),醛类(6种)、烯类(5种)、酸类(4种),酚类(4种)。  相似文献   

12.
Trigonella foenumgraecum L. (TF) is a medicinal herb, belonging to the family Legumes. It has shown positive results in remedying hypo-cholesterolemic, anti-inflammatory, antibacterial, antioxidant, anti-lipidemia, antilithigenic, hepatoprotective, antiulcer, anticarcinogenic, antifungal and other miscellaneous pharmacological effects of fenugreek. The n-hexane extract of Trigonella foenumgraecum L. Seeds (TF) was analysed by gas chromatography-mass spectroscopy for identification and characterization of its therapeutic claim by traditional system. DPPH method was used to determine the antioxidant activity of Trigonella foenumgraecum L-seeds extract using UV spectrophotometer at a wavelength of 518 nm as it is one of the most sorted methods for antioxidant activity. The major compounds discovered in Trigonella foenumgraecum L. seeds extract are Linoleic acid (48.01%); 9,12-Octadecadienoic acid (Z,Z)-, 2,3-dihydroxypropyl ester (24.65%); 2-[4-Methyl-6-(2,6,6-trimethylcyclohex-1-enyl)hexa-1,3,5-trienyl]cyclohex-1-en-carboxaldehyde(1.88%); Nonane dioic acid, bis (2-ethylhexyl) ester (1.09%); Bis (2-ethylhexyl) ester of azelaic acid (11.97%); Elemicin (0.51%); cis-Linoleic acid methyl ester (0.76%); Linoleic acid chloride(0.57%); Ethyl oleate(0.18%); Isopropyl linoleate (0.38%); Dihydrovallesiachotamine (0.06%); 4-(2,2-Dimethyl-6-methylenecyclohexyl) butanal(0.12%); Citronellyl myristate (0.09%); Rhaphidecursinol B(0.25%); 5-Methoxygalbelgin (0.07%); Vitamin E (0.31%); 1,1,1,5,5,5-hexafluoro-4-{[3-(trifluoromethyl) phenyl]imino}-2-pentanone (0.76%); γ-Sitosterol (0.66%); 1-(1,5-Dimethylhexyl)-3a,12a-dimethyltetradecahydro-1H-cyclopenta[a]cyclopropa[e]phenanthren-7-ol (0.16%) and (9Z)-9-Octadecenyl (9Z)-9-hexadecenoate (1.57%). The results showed potential antioxidant activity of n-hexane extract of Trigonella foenumgraecum L. seeds by showing significant reduction in free radical against DPPH. The hexane extract of Trigonella foenumgraecum L. seeds comprises various non-water-soluble (nonpolar) constituents. These compounds were established qualitatively via GC-MS evaluation. The free radical scavenging activity of the plant extract was established owning to the presence of compounds such as terpenes, vitamin E, and unsaturated fatty acids.  相似文献   

13.
鸽子粪挥发性成分的毛细管气相色谱分析   总被引:2,自引:0,他引:2  
 利用同时蒸馏萃取法(SDE)提取了有治疗痔疮效果的鸽子粪中的挥发性成分。用毛细管GC/MS/DS联用法分离鉴定了47种组分,占总峰面积的71.59%,再用保留指数和标样进一步确证了其中39种化合物,占总峰面积的57.15%,其中含量较高的组分是十六碳酸(9.03%)、乙酸乙酯(6.85%)、乙醇(4.03%)、1-乙氧基-2-甲基丙烷(3.87%)。从化合物的种类看,主要为醇类(4个)、醛类(11个)、酮类(4个)、酸类(8个)、酯类(5个)和酚类(2个),它们共占总峰面积的43.68%。  相似文献   

14.
采用固相微萃取技术(SPME)提取‘红灯’甜樱桃果实芳香成分,运用气相色谱-质谱-计算机联用技术进行芳香成分分析,共检测出41种芳香成分,占总峰面积的98.81%,质量分数较高的芳香成分依次为反-1,4-己二烯、己醛、2-己烯醛、(E)-2-乙烯-1-醇、1-己醇、乙醇(、E,E)-2,4-己二烯醛、己酸乙酯、苯甲醛等。  相似文献   

15.
The successful separation of 2- and 3-methyl-substituted positional isomers of butanol, butyl acetate, and butanoic acid and its ethyl ester, is reported. These compounds are of interest in the study of wine flavour, however the separation of the 2- and 3-methyl isomers may present problems, and more so in the presence of the wine matrix components, when single capillary column gas chromatography (GC) is used. The strategy to achieve separation was based on the use of shape-selective cyclodextrin derivative (CDD) capillary columns (commonly referred to as chiral columns). These columns provide simultaneous resolution of the enantiomeric pairs of the 2-methyl isomers, and at the same time the ability to separate the 3-methyl isomer from the 2-methyl is achieved in all but the case of the ( S)-2- and 3-methylbutanol. The advantages of using shape-selective columns to perform this study is demonstrated, with coupling of two CDD columns giving improved separations of these compounds. Although these compounds are relatively volatile, cryogenic modulated comprehensive two-dimensional GC was shown to provide good pulsed peak profiles with chiral separation in the first dimension when a thicker film trapping column segment was employed. The components of interest were well separated from other wine matrix components.  相似文献   

16.
孙建平  侯小歌  梁峰  时同华  段长青 《分析化学》2006,34(11):1565-1569
建立了高效液相色谱-质谱联用(HPLC-MS)技术检测葡萄酒中酚类物质的方法,并评价其定量分析的准确性、线性、重复性和检出限,结果显示:16种酚类物质除芦丁和白藜芦醇糖苷外,平均加标回收率大于78%;相关系数R2>0.999,线性关系良好;保留时间和峰面积在日内(n=10)与日间(n=6)重复性的相对标准偏差(RSD)均分别低于2.0%和5.0%;检出限为0.05~1.0 mg/L。利用该方法对6个红葡萄酒中16种酚类物质进行了定性定量分析,其相对标准偏差(CV%)均小于5.0%,说明本方法简便、准确、灵敏、重现性好,可用于葡萄酒产品质量监控。  相似文献   

17.
One hundred and one volatile compounds, reported in literature as powerful odorants of wine, were quantified by Gas Chromatography-Selective Ion Monitoring/Mass Spectrometry (GC-SIM/MS) in Primitivo, Aglianico, Merlot and Cabernet Sauvignon red wines. Wine samples were extracted by 3 different extraction methods: 1) separation of the alcoholic fraction from the aqueous phase by salting-out and subsequent extraction by liquid-liquid micro-extraction with 1,1,2-trichlorotrifluoroethane (Freon 113); 2) extraction by liquid-liquid micro-extraction with dichloromethane; 3) solid phase extraction (SPE cartridge: 800 mg of LiChrolut EN resin) with pentane-dichloromethane (20:1) and dichloromethane. The selection of the ion fragments used for quantification was directly performed on a red wine sample. For each compound the area of the corresponding peak was normalized respect to the peak of the internal standard and then interpolated in a calibration curve obtained analysing a model wine solution (water, ethanol, tartaric acid and known amounts of analytes and of internal standard). The methods showed a good linearity: r2>0.990, except for farnesol (isomer a and c), octanal, decanal, furaneol and phenylacetic acid with 0.966 < or = r2 < or = 0.990. The 7 most powerful odorants were: beta-damascenone, acetaldehyde, maltol, ethyl 2-methylbutanoate, ethyl 3-methylbutanoate, 3-methylbutanoic acid and acetal; 7 other slightly less important were: ethyl hexanoate, ethyl acetate, 1-octen-3-ol, butanoic acid, rose oxide, furaneol and sotolon. The Aglianico wines were characterised by the major fermentation compounds (esters, fatty acids and 2-phenylethanol), beta-damascenone, beta-ionone and linalool. The Primitivo wines were characterized by furaneol, methoxypyrazine, gamma-nonalactone and acetaldehyde, while Cabernet Sauvignon and Merlot wines principally by cask derivates (vanillin, (Z) 3-methyl-gamma-octalactone [(Z) wiskylactone], maltol and eugenol), some aldehydes and 3-isopropyl-2-methoxypyrazine.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号