共查询到20条相似文献,搜索用时 78 毫秒
1.
药对白术-茅苍术及其单味药中挥发油成分的比较分析 总被引:1,自引:0,他引:1
采用水蒸气蒸馏法提取单味药白术、茅苍术及其药对中挥发油成分,通过气-质联用技术(GC-MS)对其分离检测,利用直观推导式演进特征投影法(HELP)分辨解析重叠色谱峰,并结合程序升温保留指数辅助定性.从白术、茅苍术及其药对中依次鉴定出29,50,62个组分,分别占各自挥发油总量的95.93%, 97 44%, 97.47%;其中20种挥发油成分共存于单味药与药对中,主要是2-(2-甲氧基)苯甲氧基苯酚、γ-芹子烯、雅槛蓝树油烯、大根香叶烯B等.组成药对后,白术减少8种组分,茅苍术减少12种组分,而药对新增22种组分,主要是单萜烯类的低沸点化合物,新增组分在药对中的作用不容忽视. 相似文献
2.
3.
白豆蔻、红豆蔻、草豆蔻和肉豆蔻挥发油成分的比较 总被引:2,自引:1,他引:2
采用气相色谱-质谱联用技术对白豆蔻、红豆蔻、草豆蔻和肉豆蔻的挥发油成分进行了研究.从4种豆蔻中分别鉴定出33、54、37和29种化学成分,并测定了其相对含量.采用色谱指纹图谱分区法,将白豆蔻、红豆蔻、草豆蔻和肉豆蔻的总离子流色谱图分为4个区,对它们的挥发油成分进行比较.结果表明,白豆蔻挥发油成分与红豆蔻、草豆蔻或肉豆蔻挥发油成分差异较大,且白豆蔻的药效成分为1,8-桉叶油素,其含量远高于红豆蔻或草豆蔻,而在肉豆蔻中未检出该成分,故不宜用红豆蔻、草豆蔻或肉豆蔻代替白豆蔻入药.该研究为白豆蔻、红豆蔻、草豆蔻和肉豆蔻的精油挥发性成分的比较及质量评价提供了新途径. 相似文献
4.
采用水蒸气蒸馏法提取了冷蒿挥发油,气相色谱-质谱联用结合计算机检索对其化学成分进行了分析和鉴定,共分离出106个峰,确定了101种化合物,它们主要是二甲基-甲撑基环庚(17.67%)、3,3,6-三甲基-1,5-庚二烯醇-2(16.40%)、3,3,6-三甲基-1,4-庚二烯醇-6(8.55%)、桉树脑(5.57%)、3,7-二甲-基2,6-辛二烯醇-1(3.85%)、神圣亚麻三烯(3.73%)、1-甲基-3-异丙基苯(3.26%)、桥环[2,2,1]萜烯(2.91%)、樟脑(2.26%)、香叶烯(2.20%),以上10种化合物占挥发油总量的66.40%。 相似文献
5.
6.
7.
采用水蒸气蒸馏法提取,运用气相色谱-质谱联用法对香叶蒿挥发油化学成分进行了分析,用气相色谱面积归一化法测定了各成分的质量分数。结果鉴定出72个化合物,主要成分为樟脑(33.136%),桉树脑(23.419%),6-甲基-2-乙烯基-1,3-庚二烯醛(8.414%),孟烯醇(3.819%),桥环萜烯酮(3.276%),莰烯(2.454%),1R-α-蒎烯(1.917%),去甲基丁香酚(1.550%),α-松油醇(1.449%),冰片(1.674%),β-香叶烯(1.165%),百里香酚(0.329%)等。研究表明紫花冷蒿挥发油主要为单萜及其氧化衍生物。其挥发油成分的研究为挖掘其药用及食品香料工业的应用价值提供了科学依据。 相似文献
8.
9.
野菊花挥发油化学成分的气相色谱-质谱联用分析 总被引:4,自引:0,他引:4
野菊花(Flos chrysanthemum indici)为菊科植物野菊((7hrysanthemum indicum L.)的头状花序,临床应用广泛。它主要含挥发油、黄酮、倍半萜及其他成分,其中挥发油对肺炎双球菌、流感杆菌、金黄色葡萄球菌等均有较强的抑制作用。关于野菊花挥发油的化学成分已有报道。由于生长环境的差异,不同产地的野菊花药效差异较大,挥发油中各组分含量也有较大差异。我们采集江西产野菊花药材,采用气相色谱-质谱联用(GC—MS)技术, 相似文献
10.
宗水珍 《理化检验(化学分册)》2003,39(7):412-416
利用气相色谱-质谱联用装置分析了苦黄注射液中挥发油的化学成分及相对含量。共鉴定了55个化合物,其中以单萜和倍半萜为主,占已鉴定的挥发油种类的56.36%和3.63%,为挥发油的主要成分。 相似文献
11.
Pingfan Zhou Wanwan Xiao Xiaoshuang Wang Yayun Wu Ruizhi Zhao Yan Wang 《Molecules (Basel, Switzerland)》2022,27(15)
For hundreds of years, Atractylodes chinensis (DC.) Koidz. (AK) has been widely used as a treatment for spleen and stomach diseases in China. The AK polysaccharides (AKPs) have been thought to be the important bioactive components. In this stud, the impacts of different extraction methods were analyzed. The differences between AKPs extracted by hot water extraction (HWE), AKPs extracted by ultrasonic extraction (UAE), and AKPs extracted by enzyme extraction (EAE) were compared in terms of yield, total carbohydrate content, molecular weight distribution, monosaccharide composition, and synergistic activity of the AKPs with apatinib were determined. The results indicated that the yield of the polysaccharide obtained from HWE was higher than that of UAE and EAE. However, activity assays indicated that UAE-AKPs and HWE-AKPs enhanced apoptosis of human gastric cancer cells (SGC-7901) treated with apatinib and UAE-AKPs showed the strongest synergistic activities. This is also in agreement with the fact that UAE-AKPs have a smaller molecular weight, β-configuration, and higher galactose content. These findings suggested that UAE is an efficient and environmentally friendly method for producing new polysaccharides from Atractylodes chinensis (DC.) Koidz. for the development of natural synergist and for the treatment of gastric cancer. 相似文献
12.
JianYuanYIN QinMENG EnSiWANG 《中国化学快报》2005,16(1):53-56
A nonasaccharide saponin, new hederagenin saponin, had been isolated from the bark ofKalopanax septemlobus (Thunb.) Koidz., and its structure was elucidated by HRESI-MS, NMR experi-ments and chemical analyses as 3-O-β-D-xylopyranosyl-(1→4)-13-D-xylopyranosyl-(1→3)-α-L-rhamno-pyranosyl-(1→2)-α-L-arabinopyranosyl hederagenin 28-O-β-D-xylopyranosyl-(1→3)-β-D-xylopyra-nosyl-(1→2)-[α-L-rhamnopyranosyl-(1→4)-β-D-glucopyranosyl-(1→6)]-β-D-glucopyranoside. 相似文献
13.
采用高温顶空液相萃取再转移的方法,对中药白术中挥发性成分进行萃取分离富集,采用顶空液液萃取/气相色谱-质谱(HS-LP-LPE/GC-MS)联用法进行测定,并与传统水蒸汽蒸馏法(SD)提取的挥发性成分进行对比。对各种测定条件和影响因素进行了考察,最佳萃取条件为:1.0 mL PEG 400为高温萃取剂,样品用量1.2 g,萃取温度120℃,萃取时间60 min,再将萃取剂用1.0 mL正己烷进行反萃取后进行GC-MS分析;采用HS-LP-LPE/GC-MS鉴定了33个组分,占总组分含量93.18%;SD鉴定了31个组分,占总组分含量97.12%。两种方法共同检测到的组分有29个,均以苍术酮(Atractylone)含量最高。结果表明,两种方法所提取的组分基本相同,可用于白术挥发性成分的测定。 相似文献
14.
15.
顶空固相微萃取-气相色谱-质谱法用于白术中挥发性成分的分析 总被引:5,自引:0,他引:5
采用顶空固相微萃取-气相色谱-质谱法(HS-SPME-GC-MS)分离鉴定了白术中的挥发性成分,并与采用传统的水蒸气蒸馏法(SD)提取的挥发性成分进行了比较。实验中筛选了固相微萃取纤维头,优化了SPME的操作条件。样品在70 ℃下平衡30 min后,用65 μm聚二甲基硅氧烷-二乙烯基苯(PDMS-DVB)纤维头对白术样品顶空吸附30 min,于250 ℃下解吸4 min, 然后采用GC-MS对解吸物进行分离鉴定;采用HS-SPME-GC-MS鉴定出41种组分,占总峰面积的90.81%;采用SD-GC-MS鉴定出31个组分,占总峰面积的88.19%,且采用SD所提取的组分基本上都被固相微萃取所提取。结果表明, HS-SPME可取代耗时的SD用于白术中挥发性物质的提取。 相似文献
16.
Chen-Hsiang Lin Louis Kuoping Chao Li-Yun Lin Chin-Sheng Wu Lee-Ping Chu Chien-Hsueh Huang Hsin-Chun Chen 《Molecules (Basel, Switzerland)》2022,27(24)
Houttuynia cordata Thunb. is a medicinal and edible plant that has been commonly used in traditional Chinese medicine since ancient times. This study used headspace solid-phase microextraction (HS-SPME) and direct injection, combined with gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS), to identify the volatile compounds in H. cordata. Extraction from different parts of the plant using different extraction techniques for the identification of volatile compounds were determined. A total of 93 volatile components were analyzed in the leaves, stems, rhizomes, and whole plant samples of H. cordata. The leaves contained more (Z)-3-hexenal, β-myrcene, (Z)-β-ocimene, and (4E,6E)-allo-ocimene; the stems contained more geranyl acetate and nerolidol; and rhizomes contained more α-pinene, β-pinene, limonene, 2-undecanone, and decanoyl acetaldehyde. Among them, the essential oil extracted by HS-SPME could produce more monoterpenes, while direct injection could obtain higher contents of aliphatic ketones, terpene esters, sesquiterpenes, and was more conducive to the extraction of 2-undecanone and decanoyl acetaldehyde. 相似文献
17.
18.
气相-质谱法测定孜然芹挥发油的化学成分 总被引:13,自引:0,他引:13
采用水蒸气蒸馏法从孜然芹中提取挥发性成分,并用气相 质谱法(GC MS)联机分析,共分离出60余峰,鉴定出了49种物质,用面积归一法确定了相对含量。在所分离出的化合物中,碳氢化合物16种,烃类含氧衍生物32种。主要成分为枯茗醛和藏花醛,它们分别占测得组分的32 26%和26 49%。另有9种含量在1%以上的物质,主要是萜类中的单萜、倍半萜和芳香族醛、酮醚类物质。低含量组分主要为萜烯类的醇、醛、酮、酯和部分芳香族化合物。在气相分析中,选择了合适的条件,采用中等极性的DB 210柱,对孜然芹挥发油中的中等极性和非极性成分有较好的分离效果。 相似文献
19.
20.
采用色谱-质谱联用技术结合化学计量学方法对不同光照生长条件的鱼腥草挥发性成分进行分析。水蒸气蒸馏法提取鱼腥草挥发油,气相色谱-质谱进行分析。色谱指纹图谱结合主成分分析与相似度评价以探究不同光照挥发油成分的异同。直观推导式演进特征投影法(Heuristic evolving latent projections,HELP)分辨重叠色谱峰,NIST标准质谱库结合相关文献进行定性,峰面积归一化法定量,t-检验比较不同光照组成分含量间是否有显著性差异。3种光照下的鱼腥草挥发油指纹图谱存在一定的共性和差异,共鉴定出33种化合物,共有化合物26种。随着光照强度的减少,单萜类化合物含量减少,非萜类含量增多,倍半萜类变化不大。癸酰乙醛和甲基正壬酮在全光照组的含量明显低于遮光组的含量。研究结果表明,适度的遮光有利于鱼腥草挥发性有效成分含量的提高,鱼腥草药材挥发性成分种类及含量与生长条件密切相关。 相似文献