Analysis of Volatile Chemical Constituents in Callistemon rigidus Flowers by GC-MS

Volatile components of Callistemon rigidus were analyzed by headspace solid phase microextraction-gas chromatography/mass spectrometry.The results showed that 34 volatile components,including alkenes,esters,alcohols,and a small amount of acids,heterocycles and alkanes,were identified from C.rigidus flowers.The main components were eucalyptol,aspidinol,terpilenol,vanillylacetone,α-phellandrene,4-pyran-4-1,2,3-dihydro-3,5-dihydroxy-6-methyl,pinene,3-methylcatechol,naphthalene,(+)-limonene,7-methylxanthine and (+)-aromadendrene,the contents of which were 35.39%,10.09%,8.86%,4.51%,3.25%,2.81%,2.75%,2.43%,2.29%,1.3%,1.12% and 1.07%,respectively,all of which accounted for 75.69% of the total relative content.Monoterpenoids are the main components of various types of essential oils.This study provides a theoretical basis for the deep processing of this variety.

Chemical Compositions of Volatile Oil from Fruiting Body of Armillaria luteo-virens

The chemical compositions of volatile oil from fruiting body of Armillaria luteo-virens in Qinghai Province were firstly analyzed with GC-MS and its relevant compositions were detected by calculating chromatographic peak area with normalized method. 21 peaks were separated and 13 compositions were identified which were mainly unsaturated fatty acids, taking 97.1% of the total volatile oil.

药对厚朴-麻黄及其单味药中挥发油成分GC-MS的比较分析

采用水蒸气蒸馏法分别对药对厚朴-麻黄及单味药麻黄和厚朴的挥发油成分进行了提取,并结合GC-MS对所得样品化学成分进行了分离和结构鉴定,用气相色谱峰面积归一法测定各组分的相对质量分数。结果显示,从麻黄-厚朴、麻黄和厚朴挥发油分别鉴定出44、38和39个色谱峰,分别占挥发油总峰面积的98.42%、99.07%和99.21%。药对麻黄-厚朴中挥发油化学成分有28种来自厚朴,25种来自麻黄,新产生了6种化合物。

不同颜色玉兰花瓣挥发油化学成分的GC-MS分析

目的:分析并比较白色与紫色玉兰花瓣挥发油的化学成分。方法:采用水蒸气蒸馏法提取,运用毛细管气相色谱-质谱联用法结合计算机检索对其化学成分进行分析和鉴定,用气相色谱面积归一法测定各组分的相对百分含量。结果:从白色与紫色玉兰花瓣的挥发油中分别分离出37个和41个化合物,分别鉴定出了26个和20个,已鉴定挥发油成分占总挥发油含量分别为83.97%和77.06%。结论:白色与紫色玉兰花瓣挥发油的化学成分通过分析和比较有所不同。

紫玉兰花挥发油化学成分的气相色谱-质谱分析

目的分析紫玉兰花挥发油的化学成分。方法采用水蒸气蒸馏法提取,运用毛细管气相色谱-质谱联用法结合计算机检索对其化学成分进行分析和鉴定,用气相色谱面积归一法测定各组分的相对百分含量。结果经毛细管色谱从紫玉兰花挥发油中分别鉴定出了56种化合物,已鉴定挥发油成分占总挥发油含量分别为86.32%。结论报道了紫玉兰花挥发油的化学成分,为其综合开发利用提供了一定的依据。

天目木兰的挥发性化学成分

用水浴加热—反相柱吸附提取天目木兰 (MagnoliaamoenaCheng)的挥发性物质 ,用GC -MS对其化学成分和相对含量进行了系统分析 ,得到 2 7个组分 ,鉴定出 2 3种化合物 ,其中主要成分为α -蒎烯、β -蒎烯、莰烯、β -月桂烯、D -柠檬烯、鞋葑酮、十八烷等。

辛夷挥发油提取方法及辛夷化学成分、药理作用研究进展

辛夷具有多种药用功效,如散风寒、宣通鼻窍等,常用来治疗风寒头痛、鼻塞、鼻渊等病症,其主要作用物质为其挥发油。辛夷主要含有挥发油类、木脂素类、水溶性成分等。辛夷挥发油提取方法有水蒸气蒸馏法、溶剂提取法、微波萃取法、超临界流体萃取法等。现对辛夷挥发油的提取方法、辛夷化学成分及药理作用进行综述,以期为辛夷进一步开发利用和研究提供有效的理论支持。