Gámiz-Gracia L, Luque de Castro M D
Analytical Chemistry Division, Faculty of Sciences, University of Córdoba, E-14004 Córdoba, Spain.
Talanta. 2000 May 5;51(6):1179-85. doi: 10.1016/s0039-9140(00)00294-0.
A subcritical extractor equipped with a three-way inlet valve and an on/off outlet valve has been used for performing subcritical water extractions (SWE) in a continuous manner for the isolation of the essential oil of fennel, a medicinal plant. The target compounds were removed from the aqueous extract by a single extraction with 5 ml hexane, determined by gas-chromatography-flame ionization (GC-FID) and identified by mass spectrometry (MS). The proposed extraction method has been compared with both hydrodistillation and dichloromethane manual extraction. Better results have been obtained with the proposed method in terms of rapidity, efficiency, cleanliness and possibility of manipulating the composition of the extract.
配备三通进水阀和开关式出水阀的亚临界萃取器已被用于以连续方式进行亚临界水萃取（SWE），以分离药用植物茴香的精油。通过用5毫升己烷单次萃取从水提取物中去除目标化合物，采用气相色谱-火焰离子化检测法（GC-FID）进行测定，并通过质谱法（MS）进行鉴定。已将所提出的萃取方法与水蒸馏法和二氯甲烷手动萃取法进行了比较。在所提出的方法中，在快速性、效率、清洁度以及控制提取物组成的可能性方面都获得了更好的结果。
