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首页> 外文期刊>Separation and Purification Technology >An efficient method for extraction, separation and purification of eugenol from Eugenia caryophyllata by supercritical fluid extraction and high-speed counter-current chromatography
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An efficient method for extraction, separation and purification of eugenol from Eugenia caryophyllata by supercritical fluid extraction and high-speed counter-current chromatography

机译：超临界流体萃取-高速逆流色谱法从香叶桉中提取丁香酚的有效方法

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摘要

Supercritical fluid extraction (SFE) of eugenol from Eugenia caryophyllata was performed. The optimization of parameters was carried out using an analytical-scale supercritical fluid extraction system. Then the extraction was scaled up by 60 x using a preparative SFE system under the optimized conditions of 50°C, 30 MPa and a sample particle size of 40-60 mesh. The yield of the preparative SFE was 17.1% and the yield of eugenol was 94 mg/g of dry buds. Eugenol in the extract was separated and purified by high-speed counter-current chromatography (HSCCC) with a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (1:0.5:1:0.5, v/v). From 1.5 g of crude extract, 804 mg of eugenol was obtained at 98.5% purity as determined by HPLC.
机译：进行了超临界提取法从丁香中的丁香酚的提取。使用分析规模的超临界流体萃取系统进行参数的优化。然后使用制备型SFE系统在50°C，30 MPa的最佳条件和40-60目样品粒径的优化条件下将萃取规模扩大60倍。制备的SFE的产率为17.1％，丁香酚的产率为94mg / g干芽。分离提取物中的丁香酚，并通过高速逆流色谱（HSCCC）进行纯化，使用由正己烷-乙酸乙酯-甲醇-水（1：0.5：1：0.5，v / v组成的两相溶剂系统） ）。通过HPLC测定，从1.5g的粗提取物中获得804mg的丁子香酚，纯度为98.5％。

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