This work investigated the phase behavior of the system sc-CO + ethanolic extract of passion fruit bagasse (EEPFB) and the effect of operation modes on the supercritical fluid impregnation (SFI) of phenolic compounds from EEPFB in corn starch aerogels. The total reducing capacity, antioxidant capacity (FRAP and ORAC), piceatannol amount and SFI yield (%) were evaluated. Three of the four system compositions showed the formation of a solid phase. SFI in static mode provided the best TRC, FRAP, and ORAC results. There were no significant differences in the amount of piceatannol and yield (%). The nitrogen adsorption/desorption test possibly indicates the filling of the aerogel pores with EEPFB and images of the aerogel before and after SFI suggest the incorporation of phenolic compounds into the corn starch aerogels through precipitation.

中文翻译：

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玉米淀粉气凝胶中百香果甘蔗渣酚类化合物的超临界流体浸渍：相行为和操作模式的影响


这项工作研究了 SC-CO + 百香果甘蔗渣乙醇提取物 (EEPFB) 系统的相行为以及操作模式对 EEPFB 酚类化合物在玉米淀粉气凝胶中超临界流体浸渍 (SFI) 的影响。评价总还原能力、抗氧化能力（FRAP和ORAC）、白皮杉醇含量和SFI产率（%）。四种系统组合物中的三种显示出固相的形成。静态模式下的 SFI 提供了最佳的 TRC、FRAP 和 ORAC 结果。白皮杉醇的含量和收率(%)没有显着差异。氮气吸附/解吸测试可能表明气凝胶孔被 EEPFB 填充，并且 SFI 前后的气凝胶图像表明酚类化合物通过沉淀掺入玉米淀粉气凝胶中。