The supercritical fluid extraction of Acacia dealbata Link. bark was performed with carbon dioxide at different pressures (10–30 MPa), temperatures (40–80 °C), and cosolvents contents (0–10 wt% of ethyl acetate or ethanol) to analyse their effect on various performance indicators whose best values were: total extraction yield of 1.57 wt%; lupenyl acetate (LA) and lupenone (Lu) extraction yields of 777.5 mg kg_bark^-1 and 679.8 mg kg_bark^-1; and LA and Lu extract concentrations of 15.8 wt% and 12.8 wt%. Two extraction curves were measured, and an economic analysis was accomplished. The impact of pressure, temperature, cosolvent content, and extraction time on the cost of manufacturing (COM) and productivity were evaluated, reaching a minimum of 52.3 € kg_extract^-1. A sensitivity analysis showed that the electricity price is the most impactful variable on the COM. Overall, the increase of pressure, temperature and cosolvents content favoured the productivity, decreasing the production cost.

金合欢的超临界流体萃取。在不同压力（10-30 MPa）、温度（40-80 °C）和助溶剂含量（0-10 wt% 的乙酸乙酯或乙醇）下用二氧化碳对树皮进行了分析，以分析它们对各种性能指标的影响值为：总提取率为1.57 wt%；777.5 mg kg_树皮^-1和 679.8 mg kg_树皮^{-1的乙酸鲁苯酯 (LA) 和鲁苯酮 (Lu) 提取率}; LA 和 Lu 提取物的浓度分别为 15.8 wt% 和 12.8 wt%。测量了两条提取曲线，并完成了经济分析。压力、温度、共溶剂含量和提取时间对制造成本 (COM) 和生产率的影响进行了评估，达到最低 52.3 € kg_提取物^-1。敏感性分析表明，电价是对 COM 影响最大的变量。总的来说，压力、温度和共溶剂含量的增加有利于生产率，降低生产成本。