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目的:以超临界CO2萃取厚朴酚的副产物──厚朴油为原料,研究了分子蒸馏技术分离厚朴油的分离效果。方法:保持刮膜式分子蒸馏仪温度140℃,真空度4Pa,对厚朴油进行蒸馏。采用GC-MS法分析蒸馏产物成分,采用HPLC法对蒸馏产物中厚朴酚、和厚朴酚定量。结果:分子蒸馏的轻组分鉴定出27种成分,主要是石竹烯氧化物、香木兰烯氧化物等挥发性成分;分子蒸馏的重组分鉴定出7种成分;厚朴油共鉴定出28种成分。其中α-毕澄茄烯、β-人参烯、α-依兰油烯、τ-依兰醇、香木兰烯氧化物这5种成分为首次从厚朴中鉴定。结论:分子蒸馏技术可用于分离厚朴油中挥发性成分,对厚朴油中厚朴酚与和厚朴酚具有蒸馏及富集效果。
OBJECTIVE: To study the separation effect of magnoliae officinalis by molecular distillation technique with crude oil of Magnolia Bark as raw material. Methods: Keeping the temperature of the scraping film molecular distillation apparatus to 140 ℃ and the vacuum degree to 4Pa, the crude oil of Magnolia officinalis was distilled. The components of the distillation products were analyzed by GC-MS, and the content of honokiol and honokiol in distilled products were determined by HPLC. Results: 27 components were identified from the light fraction of molecular distillation, mainly volatile components such as caryophyllene oxide and magnoliane oxide; 7 components were identified by molecular weight fraction distillation; 28 ingredient. Among them, the five components of α-bebeteen, β-allene, α-elemene, τ-elanol, and magnoliane oxide were identified from Magnolia officinalis for the first time. Conclusion: The molecular distillation technology can be used for the separation of the volatile components of Magnoliaceae oil, Magnolia oil Magnolol and honokiol distillation and enrichment effect.