Study of process variables in supercritical carbon dioxide extraction of soybeans

Abstract

Soybean flakes were extracted using supercritical carbon dioxide at 48.3 MPa and 80 °C, which is a higher temperature than previously reported. Several operational parameters were explored to determine their effect on extractions. Flakes, as typically used in this industry, provided the best extraction performance. Particle size distributions were created through grinding. Reducing average particle diameters smaller than 0.069 mm had no appreciable effect on increasing extraction efficiencies. Exploration of flow rate indicated that a residence time of less than 60 s for the supercritical carbon dioxide would be sufficient for complete extractions. A solvent mass to load mass ratio of 10:1 was found to be sufficient for extraction of oils from soybean flakes. Increasing moisture in the soybeans led to decreasing extraction efficiency of oils. Finally, soybean hulls had no effect on extraction efficiency. Thus, the de-hulling procedure can be removed from the extraction process without decreasing extraction efficiency.

Recovery of Bergamot Seed Oil by Supercritical Carbon Dioxide Extraction and Comparison with Traditional Solvent Extraction

“…Previous studies have shown the feasibility of extraction of seed oil by SFE techniques (Wilkinson et al . ; Ni et al . ).…”

“…Previous studies have shown the feasibility of extraction of seed oil by SFE techniques (Wilkinson et al 2014;Ni et al 2015). Efficient extraction of seed oil may be accomplished with SC-CO 2 because CO 2 density results in adequate solvent power (Molero G omez et al 1996;Piras et al 2012), so CO 2 density higher of 500 kg/m 3 was used to achieve an adequate extraction yield of oil.…”

Advances in Supercritical Carbon Dioxide Extraction of Bioactive Substances from Different Parts of Ginkgo biloba L.

“…Similarly, factors, such as flow rate and residence time of CO 2 , could affect the extraction of natural products. Wilkinson et al [ 55 ] indicated that a residence time of less than 60 s for the SFE-CO 2 would be sufficient for complete the extractions of soybean oil by the exploration of flow rate.…”

Extraction and Characterization of Oil from Mudong bayberry (Myrica rubra) Kernels

“…To the best of our knowledge, there are no reports about the extraction of oil from Mudong bayberry kernels. Therefore, the aim of this work was to investigate the optimal extraction conditions for oil from Mudong bayberry kernels using the organic solvent leaching method based on the response surface methodology (RSM) (Wilkinson et al, 2014). The fatty acid compositions of Mudong bayberry kernel oil were also analyzed using the gas chromatography-mass spectrometry (GC-MS).…”