Rapeseed oil consists of a blend of high-quality lipid acids, which is consumed by the food and nutrition industry and other clients in general. Ultrasonic-assisted extraction, as an unconventional method of introducing the energy needed into the system, maceration and solvent reflux distillation were used to obtain the rapeseed oil. The results obtained were compared in terms of yield productivity and specific energy. The experimental design was carried out using the full factorial matrix technique, while the response surface methodology was applied to find the optimum operating conditions giving the highest extract concentration. Effects of the solid-solvent mass ratio, extraction time and ultrasound intensity field on the extraction yield were studied. Good results were obtained after 5 min of ultrasonic-assisted extraction time, 80% ultrasonic-assisted power and 1:6 molar ratio, when the extraction yield (19.2 ± 0.04%) is much higher compared to the two conventional methods. A thorough comparison of the ultrasonic-assisted extraction, maceration and solvent reflux distillation techniques was done. Using a new metric (energy productivity), maceration performs remarkably well, proving to be a serious competitor to ultrasonic-assisted extraction, because good results can be obtained without very large investments and difficult to solve scale-up problems, implied by ultrasonic-assisted extraction.

菜籽油由优质脂肪酸的混合物组成，被食品和营养行业以及其他一般客户消费。超声波辅助萃取作为一种将所需能量引入系统的非常规方法，采用浸渍和溶剂回流蒸馏的方法获得菜籽油。获得的结果在产量生产率和比能量方面进行了比较。使用全因子矩阵技术进行实验设计，同时应用响应面法来寻找最佳操作条件，以获得最高提取物浓度。研究了固溶质量比、提取时间和超声强度场对提取率的影响。超声辅助提取时间 5 min 后获得了良好的结果，80% 超声辅助功率和 1:6 摩尔比时，提取率 (19.2 ± 0.04%) 远高于两种常规方法。对超声辅助萃取、浸渍和溶剂回流蒸馏技术进行了全面比较。使用新的指标（能源生产率），浸渍性能非常好，被证明是超声波辅助提取的重要竞争对手，因为无需大量投资即可获得良好的结果，并且难以解决超声波辅助所暗示的放大问题萃取。