Abstract: We used three groups of parallel single factor experiment to determine Tara seed oil extraction process conditions to improve Taraoil yield. We focused on supercritical CO₂ fluid extraction technology to extract Tara oil, optimized the Tara oil’s extraction process and methods, and analyzed the Tara oil quality. With oil extraction yield as index, on the basis of a single factor preliminary experiments, we studied extraction time, extraction temperature, extraction pressure, and their interactions on Tara seed oil extraction yield systematically. The optimum extraction conditions were extraction time of 120 min, extraction temperature of 45℃, and extraction pressure of 35 MPa. By single factor experiment for three repeated experiments, under optimum conditions the Tara oil actual extraction yield was 21.07%, which was consistent with the single factor experiment results. The extracted oil showed transparent and yellowish, belonging to drying oil with high unsaturated fatty acid content, with high quality and valuableuse.

Key words: Tara Oil, supercritical CO₂, physical and chemical properties