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分子蒸馏技术拆分细辛油及GC-MS分析
宋庆武,范开田,林静,侯召华
0
(日照职业技术学院,日照 276826;日照市食品药品检验检测中心,日照 276826;中国农业科学院特产研究所,长春 130112)
摘要:
水蒸气蒸馏法得到细辛油,利用分子蒸馏技术对细辛油进行拆分,得到不同馏分物,并进行气相色谱-质谱(GC-MS)分析。分子蒸馏条件分为二级,一级蒸发温度为30℃,真空度5.0 mbar;二级蒸发温度为60℃,真空度5.0 mbar,二级进样温度均为30℃,冷凝水温度为10℃,刮膜转速150~160 r·min-1。结果表明,经过二级分离后,得到2部分轻组分(distillate fraction, DF)和1部分重组分(residue fraction, RF);一级轻组分(DF1)、二级轻组分(DF2)和二级重组分(RF2)所占质量比分别为68.30%、13.27% 和15.95%。对原油和各级馏分物分别进行GC-MS分析,共检测出35个化合物,主要成分为右旋萜二烯、α-蒎烯、β-蒎烯、4-萜烯醇、桉叶油醇、萜品油烯和L-香芹醇等;3部分馏分物DF1、DF2和RF2及原油中组分数量分别为6、16、28和14种;且各部分中成分相对含量差别显著。以上结果表明分子蒸馏技术能有效对原油成分进行拆分,为挥发油充分利用提供新的理论基础。
关键词:  细辛油  分子蒸馏技术  拆分  气相色谱-质谱法
DOI:10.13610/j.cnki.1672-352x.20150626.003
基金项目:江西省烟草公司“提高烟草可能性新型调节物质研制及应用”[赣烟(2011, 98号)]和池州市烟草公司“生物绿肥在生产中应用研究”项目(池烟2011, 11, 18)共同资助。
Gas chromatography/mass spectrometry (GC-MS) analysis of the essential oil from Asarum by molecular distillation (MD) separation
SONG Qingwu,FAN Kaitian,LIN Jing,HOU Zhaohua
(Rizhao Polytechnic, Rizhao 276826;Rizhao Institue for Food and Drug Control, Rizhao 276826;Institute of Special Wild Economic Animals and Plants, Chinese Academy of Agricultural Sciences, Changchun 130112)
Abstract:
The essential oil extracted from Asarum through steam distillation was fractionated using molecular distillation (MD). The crude essential oil was used for two molecular distillation processes. One residue (RF2) and two distillate fractions (DF1 and DF2) were prepared by MD. Three fractions were obtained under the operation parameters of 30°C and 5.0 mbar for the first process and 60°C and 5.0 mbar for the second process. The chemical components of different fractions were analyzed using gas chromatography/mass spectrometry (GC-MS). The results showed that the yields of DF1, DF2, and RF2 were 68.30%, 13.27%, and 15.95% (w/w), respectively. GC-MS results revealed that 35 ingredients were detected in the essential oil, including (+)-Limonene, α-Pinene, β-Pinene, Terpinen-4-ol, Eucalyptol, Terpinolene, and (-)-Carveol et al. Concentrations and compositions of these chemical components in different factions were significantly different. In conclusion, molecular distillation is a feasible separation method for essential oil.
Key words:  essential oil  molecular distillation  separation   gas chromatography/mass spectrometry (GC-MS)

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