The present study deals with the effect of combining instant controlled pressure-drop DIC texturing as a pretreatment step and the supercritical carbon dioxide extraction of date seeds oil in order to improve the extraction yield and/or time. Ground samples with mean particle size of 0.9 mm and undergoing no further treatments were used. Since the impact of DIC texturing mainly depends on the treatment time t and the absolute saturated steam pressure P, a response surface methodology RSM was carried out using these two independent factors and the oil yields and effective diffusivity as the response variables. A scanning electron microscope SEM showed that DIC pretreatment induced controlled modifications of the structure, breaking cell walls, thus enhancing the extraction performance. The results showed that the optimum extraction yield of DIC pretreated samples increased by an improvement over control of 15.48% and the extraction time reduced by 30%, which is quite encouraging.

本研究处理了将即时控制的压降DIC纹理化作为预处理步骤与枣籽油的超临界二氧化碳萃取相结合的效果，以提高萃取产率和/或时间。使用平均粒径为0.9毫米且未进行进一步处理的研磨样品。由于DIC织构化的影响主要取决于处理时间t和绝对饱和蒸汽压P，因此使用这两个独立因素并将油的产率和有效扩散率作为响应变量进行了响应面方法RSM。扫描电镜SEM显示DIC预处理引起结构的受控修饰，破坏细胞壁，从而提高提取性能。结果表明，与对照相比，DIC预处理样品的最佳提取率提高了15.48％，提取时间减少了30％，这非常令人鼓舞。