【摘要】 介绍了夹带剂在超临界CO2萃取中的作用和原理,分析了夹带剂分子极性、相对分子质量、分子体积及特殊分子结构等性质对超临界CO2萃取的影响,总结出夹带剂性质对萃取率的变化规律:夹带剂的分子极性越大,溶质在超临界CO2中的溶解度越大;夹带剂的相对分子质量、分子体积的增大,其在超临界CO2中的溶解度减小,萃取率减小;夹带剂中易形成氢键的特殊分子结构,可提高萃取率。更多还原

【Abstract】 The effect and principle of the modifiers on the supercritical CO₂ extractionwere introduced and the impact of the property of modifiers（molecular polarity?molecular weight?molecular physical volume）on the supercritical CO₂ extraction were analyzed.The profile of extraction yield against property of the modified can be summarized as:The higer the polarity of the modifier,the higher solubility of solute in supercritical CO₂.Increase of molecular and/or molecular physical volume will result-in decreasc of solubility of solute in supercritical CO₂ and consequently the decrease of the extraction yield.In case the modifier contains special molecular structure that facilitates the formation of hydrogen bond,the extraction yield will increase.更多还原