Department of Analytical Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
Food Chem. 2013 May 1;138(1):251-5. doi: 10.1016/j.foodchem.2012.09.112. Epub 2012 Nov 8.
To avoid the traditional and time consuming hydrodistillation, the analyses of volatile components in aerial parts of Echinophora platyloba DC was carried out by a simple microwave distillation followed by headspace single drop microextraction (MD-HS-SDME) coupled to gas chromatography-mass spectrometry (GC-MS). The headspace volatile compounds were collected after irradiation using a single drop of n-heptadecan. The extraction conditions were optimised using the relative peak areas as index. The chemical composition of the MD-HS-SDME extracts was confirmed according to their retention indexes and mass spectra. Fifty-three components were extracted and identified by using the MD-HS-SDME method. E-β-ocimene (53.81%), R-D-decalactone (12.75%), α-pinene (6.43%), n-heptanol (6.27%), β-phellanderne (2.70%) and linalool (1.89%) were the major constituents.
为避免传统耗时的水蒸馏法，采用简单的微波蒸馏结合顶空单滴微萃取（MD-HS-SDME）与气相色谱-质谱联用（GC-MS）对蓝刺头地上部分的挥发性成分进行了分析。在照射后使用一滴正十七烷收集顶空挥发性化合物。采用相对峰面积为指标对萃取条件进行了优化。根据保留指数和质谱确定了 MD-HS-SDME 提取物的化学成分。采用 MD-HS-SDME 法提取并鉴定了 53 种成分。E-β-罗勒烯（53.81%）、R-D-癸内酯（12.75%）、α-蒎烯（6.43%）、正庚醇（6.27%）、β-水芹烯（2.70%）和芳樟醇（1.89%）是主要成分。
