Pressurized extraction of high-quality blackberry (Rubus spp. Xavante cultivar) seed oils

[Display omitted] •The blackberry seeds oil extractions with propane are faster than those with scCO2 as solvent.•The oils obtained are rich in unsaturated fatty acids, especially linoleic, oleic and γ-linolenic.•Oil with high antioxidant activity was obtained with scCO2.•Oils obtained with compressed fluids showed good thermal stability, although they are highly unsaturated oils. This study reports the extraction of oil from organic blackberry (Rubus spp. Xavante cultivar) performed using supercritical CO2 (scCO2), compressed propane, n-hexane and petroleum ether. The extractions with compressed propane showed higher extraction yield and extraction rate, when compared to those performed with scCO2. All the oils obtained represent a rich source of unsaturated fatty acid (around 93 %) composed mainly by linoleic acid. Furthermore, the extraction using scCO2 resulted an oil with high total phenolic compounds (113.49 mg GAE 100 g−1) and antioxidant activity as given by the ABTS method (2701.74 μmol TE 100 g−1). On the other hand, compressed propane showed a higher efficiency in extracting β-carotene and the oil obtained with such solvent presented a higher thermal stability (224.70 °C), rather than the oil obtained with scCO2 (198.83 °C). These results indicate a high potential of this oil for applications in food, pharmaceutical, nutraceutical and cosmetic industries.