摘要
用干馏工艺扩试提取杉根精油,干馏釜3m3,干馏温度105～420℃,时间6.0h,产品得率为6.08%,是水蒸气蒸馏提取方法的3倍。产品相对密度(25℃)为0.9912～1.021,折射率nD20为1.4799,旋光度+0.5°。应用GC法对100～250℃的精油化学成分进行了分析,分出41个色谱峰,共鉴定出39个化合物,占该精油总质量的99.16%,其中主要成分为α-蒎烯3.8010%(质量分数,下同),d-柠檬烯2.8893%,β-松油烯7.1880%,长叶烯10.4162%,β-石竹烯4.2064%,α-木罗烯3.017%,β-松油醇2.876%,β-榄香烯4.5719%,柏木醇31.5087%,愈创木醇6.1426%,实验结果表明,精油化学成分及含量因树龄、树的部位、提取工艺不同,差异很大。
The essential oil of the root of Cunninghamia lanceolata was extracted in industrial-scale test retort volume 3 m^3 by destructive distillation under the carbonization temperature of 105 -420 ℃ during the period of six hours. Yield of the oil is 6. 08% ,three times that by hydrodistillation. Density of the oil （25 ℃ ） is 0.9912 - 1.021 and refractive index （20 ℃） is 1.4799, optical rotation is ＋ 0.5°. Through GC,39 compounds were identified,amounting to 99. 16% of the chromatographic peak area. The major components are α-pinene 3.801% （mass fraction）, d-limonene 2.889 3%, β-terpinene 7. 1880%, longifolene 10. 416 2% ,β-caryophyllene 4. 206 4%, α-muulorene 3. 017% ,β-terpineol 2. 876% ,β-elemene 4. 571 9%, cedar camphor 31. 508 7% and guaiol 6. 142 6%. The result shows that the constituents of the essential oil change with the age and position of the tree and the extraction technics.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2007年第11期1095-1098,共4页
Fine Chemicals
基金
福建省自然科学基金(z0513018)~~
关键词
杉木
干馏
精油
Cunninghamia lanceolata
destructive distillation
essential oil
