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采用微波辅助顶空固相微萃取法提取印度草木犀不同部位的挥发油,通过气相色谱-质谱法与Kovats色谱保留指数相结合进行定性定量分析。结果表明,在印度草木犀的茎、叶和花中分别鉴定出43、44和71个组分,分别占挥发油总峰面积的89.92%、83.12%和90.77%,在茎中主要成分是3,4-二氢香豆素(5.97%),二氢香豆素(55.29%)和十六醛(4.44%)。叶中主要成分是3,4-二氢香豆素(11.84%),二氢香豆素(48.15%)。而在花中主要是3,4-二氢香豆素(6.08%),二氢香豆素(27.44%),对异丙基苯甲醚(6.20%)和麝香草酚(5.19%)。结果显示,不同部位相同化学成分其相对质量分数有一定的差异性。
The microwave-assisted headspace solid-phase microextraction method was used to extract the volatile oil from different parts of Rhizoctonia solani. Qualitative and quantitative analysis was performed by gas chromatography-mass spectrometry combined with Kovats retention index. The results showed that 43, 44 and 71 components were identified in the stem, leaf and flower of Indian rhizogenes, accounting for 89.92%, 83.12% and 90.77% of the total peak area of the volatile oil, respectively, and the main component in the stem was 3, 4-dihydrocoumarin (5.97%), dihydrocoumarin (55.29%) and hexadecanal (4.44%). The main components in leaves are 3,4-dihydrocoumarin (11.84%) and dihydrocoumarin (48.15%). In the flowers, 3,4-dihydrocoumarin (6.08%), dihydrocoumarin (27.44%), p-anisole (6.20%) and thymol (5.19%) were the main constituents. The results show that different parts of the same chemical composition of the relative mass fraction of a certain difference.