超临界流体萃取分析蓬莪术挥发性成分

作者：陈淑莲 游静 王国俊

    单位：中国科学院兰州化学物理研究所 730000

    关键词：蓬莪术；挥发油；超临界流体萃取；气相色谱-质谱法

    中草药001212摘 要 用超临界流体萃取、毛细管气相色谱及气相色谱-质谱对蓬莪 术挥发油进行分析。最优化的超临界流体萃取条件为20.0 MPa，55 ℃，0.5 mL乙醇作改 性剂，动态萃取40 min，CO₂用量为12 mL，并与索氏萃取、水蒸气蒸馏比较。

    Extraction of Essential Oil from Curcuma phaeocaulis by Supercritical Fluid Extraction

    Chen Shulian You Jing and Wang Guojun

    (Lanzhou Institiute of Chemical Physics, Chinese Academy of Sciences Lanzhou 730000)

    Abstract To develop a method for the extraction of essential oil from Curcuma phaeocaulis Val. by supercritical fluid extra c tion (SFE), and analysis of its composition by capillary GC and GC/MS spectromet ry. Conditions for the super critical fluid CO₂ extraction were studied in co m parison with Soxhlet extraction (SX) and steam distillation (SD). The optimum c o ndition for SFE was found to be: 12 mL of CO₂ and 5 mL ethyl alcohol at a pres sure of 20.0 MPa, and 55 ℃ temperature for 40 min. 33 compounds were identifi ed by CGC and GC/MS spectrometry. The SFE method was found to be superior than ei ther SX or SD extraction.