In this study, the effect of the pretreatment of crambe seeds on the yield and quality of the oil extracted with pressurized propane, CO₂ and propane+CO₂ mixtures was investigated. The use of different process conditions and solvent mixtures was evaluated. The pretreatments applied were thermal treatment (TT), thermal treatment after immersion in water (TTI) and thermal treatment after application of steam (TTS). The TTI and TTS provided oil with greater oxidative stability for extractions with propane and propane +CO₂. This may be related to a higher concentration of active compounds in the oil, mainly tocopherols, since this variable was strongly correlated (0.92) with the oxidative stability according to the principal component analysis. The increasing amount of CO₂ to 60 wt% in the mixture provided higher yields up to 34.84% at lower pressures. Also, at 40 °C, 100 bar and 55 wt% CO_2, a similar yield was obtained in 60 min, requiring ~24 wt% less propane in relation to extraction with this pure solvent.

在这项研究中，研究了蛤ram种子预处理对加压丙烷，CO ₂和丙烷+ CO ₂混合物萃取的油的产量和品质的影响。评估了不同工艺条件和溶剂混合物的使用。进行的预处理为热处理（TT），浸入水中的热处理（TTI）和施加蒸汽的热处理（TTS）。TTI和TTS为石油提供了更高的氧化稳定性，可用于丙烷和丙烷 + CO _2的萃取。这可能与油中主要是生育酚的活性化合物浓度较高有关，因为根据主成分分析，此变量与氧化稳定性密切相关（0.92）。混合物中增加的CO ₂至60 wt％可以在较低压力下提供更高的收率，最高可达34.84％。同样，在40°C，100 bar和55 wt％的CO _2下，在60分钟内获得了相似的收率，相对于用这种纯溶剂萃取，丙烷的用量减少了约24 wt％。