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首页> 外文会议>Italian Conference on Supercritical Fluids and Their Applications >EFFECT OF SAMPLE PREPARATION METHOD ON SUPERCRITICAL FLUID EXTRACTION FOR ESSENTIAL OILS FROM BITTER ORANGE (VAR.AMARA)
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EFFECT OF SAMPLE PREPARATION METHOD ON SUPERCRITICAL FLUID EXTRACTION FOR ESSENTIAL OILS FROM BITTER ORANGE (VAR.AMARA)

机译：样品制备方法对苦橙精油超临界流体萃取的影响（var.amara）

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The supercritical fluid extraction of bitter orange essential oil was studied using dehydrated or fresh bitter orange peel as raw material and CO_2 as solvent. The influence of sample preparing (dried or fresh sample) on the Limonene extraction yield was studied. And also, the influence of different operation conditions was analysed in the pressure range from 100 to 300 atm at temperatures 35, 45 and 55°C for a static time of 20 minutes. In these experiments, the duration of dynamic time was varied from 15 to 35 minutes and also the concentration of co-solvent (methanol) was increased from 0 to 10% (V/V). Limonene was the principal component extracted, the optimum conditions for limonene extraction were P=300 atm, T=45°C, t_d=15min and C_(co-solvent)=10% (V/V). In these conditions the yield of limonene extraction and the composition of extracted essential oil are different for fresh and dried sample and drying process may cause an important loss of volatile components.
机译：使用脱水或新鲜苦橙皮作为原料和CO_2作为溶剂研究苦橙精油的超临界流体提取。研究样品制备（干燥或新鲜样品）对柠檬烯提取产率的影响。而且，在温度35,45和55℃的压力范围内分析不同操作条件的影响，在35,45和55℃下进行20分钟的静态时间。在这些实验中，动态时间的持续时间从15到35分钟变化，并且还载溶剂（甲醇）的浓度从0升至10％（v / v）。柠檬烯是提取的主要成分，柠檬烯提取的最佳条件为P = 300atm，T = 45℃，T_D = 15min和C_（共溶剂）= 10％（v / v）。在这些条件下，柠檬烯提取的产率和提取的精油组合物对于新鲜和干燥的样品和干燥方法不同，干燥过程可能导致挥发性组分的重要损失。

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