Bruni Renato, Guerrini Alessandra, Scalia Santo, Romagnoli Carlo, Sacchetti Gianni
Department of Chemistry, University of Ferrara, Via Luigi Borsari 42, 1-44100 Ferrara, Italy.
Phytochem Anal. 2002 Sep-Oct;13(5):257-61. doi: 10.1002/pca.651.
Supercritical fluid extraction (SFE) of seeds of Amaranthus caudatus (Amaranthaceae) and the use of ultrasound as a co-adjuvant in the extraction process were compared with methods traditionally used in the extraction of tocopherols and fatty acids. The use of readily available ultrasound equipment as an adjunct to the classical methods employed for the extraction of tocols provided qualitatively acceptable results more rapidly and more economically. SFE gave quantitatively better yields in shorter times, with solvent-free extracts obtained under conditions that minimised the degradation of thermolabile components. No significant variations were observed in the profile of the fatty acids extracted from amaranth oil by SFE or other methods, thus confirming the qualitative comparability of the faster supercritical extraction with the more time-consuming classical techniques even when processed with the aid of ultrasound.
将尾穗苋（苋科）种子的超临界流体萃取（SFE）以及在萃取过程中使用超声作为辅助手段，与传统用于生育酚和脂肪酸萃取的方法进行了比较。使用现成的超声设备作为传统生育三烯酚萃取方法的辅助手段，能够更快且更经济地获得质量上可接受的结果。SFE在更短时间内实现了更高的定量产率，在使热不稳定成分降解最小化的条件下获得了无溶剂提取物。通过SFE或其他方法从苋菜籽中提取的脂肪酸谱未观察到显著差异，从而证实了即使借助超声处理，更快的超临界萃取与更耗时的传统技术在质量上具有可比性。
