Optimization of Supercritical CO₂ Extraction of Quinoa Oil and Analysis of Its Fatty Acid Components

In this paper,quinoa was used as raw material and oil yield as test index,the optimum technological conditions of extraction of quinoa oil by supercritical CO₂ were determined by single factor experiments and orthogonal experiment,and the components were analyzed by gas chromatography(GC). The results showed that the optimum extraction conditions were as follows:extraction temperature 50℃,extraction pressure 30 MPa,extraction time 120 min. Under these conditions,quinoa oil yield was 4.134% and SD was 3.86×10^-5. A total of 26 compounds were isolated and identified from quinoa oil,among which linolenic acid,linoleic acid and oleic acid were the highest,with a relative content of them were 30.96%,21.94% and 15.23%,respectively. This study provided theoretical basis for comprehensive development and utilization and quality evaluation of quinoa.