超临界二氧化碳萃取蛋黄油的研究

Supercritical Carbon Dioxide Extraction of Yolk Oil

采用超临界萃取方法，以二氧化碳作为溶剂，在比较温和的实验条件下，从蛋黄粉中萃取蛋黄油。实验条件为：温度３５℃～７５℃，压力２５ＭＰａ～３６ＭＰａ，ＣＯ２的流量约７．０ｋｇ／ｈ。实验得到最佳的萃取条件为：５５℃、２８ＭＰａ～３６ＭＰａ。气相色谱分析结果表明：在不同的萃取阶段蛋黄油的组成类似。

In this study,supercritical fluid extraction with carbon dioxide has been employed with analternative method to separate yolk oil under mild condition.Extractions were performed over the pressure range of 25MPa～36MPa and at temperature from 35℃～75℃ with CO 2 mass flow rate of 7.0kg/h.The optimal experimental conditions were temperture of 55℃ and pressure of 28MPa～36MPa.Gas chromatographic analysis of fractions collected during the extrction showed a similar composition.Experimental data permitted the determination of yolk oil solubility in supercritical carbon dioxide the tested extraction conditions.