Studies on the Supercritical Fluid Extraction Technique of Terpenen-4-ol,the Main Insecticidal Ingredient of the Essential Oil from the Berries of Sabina vulgaris
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Abstract
With the extraction efficiency of terpenen-4-ol as estimated index, the technology conditions of extracting terpenen-4-ol from the berries of Sabina vulgaris were investigated by supercritical fluid extraction(SFE) and gas chromatography(GC). The rational conditions were the size of sample 0.85 mm,static extraction 10 min before dynamic extraction, temperature 45℃,pressure 34.47 MPa,flow rate 30 mL/g. SFE extraction rate of terpenen-4-ol was 2.72 mg/g under this condition apparently higher than steam-distillation extraction rate 2.00 mg/g. The investigated SFE conditions are suitable to extract, separate and analyse terpenen-4-ol from botanical material. Moreover, SFE technology has the merits of high efficiency,accuracy, innocuity,economy and convenient.
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