Extraction of rotenoids from Derris elliptica using supercritical CO₂

Abstract

BACKGROUND: Supercritical (SC)-CO 2 extraction of rotenoids from Derris elliptica roots was proposed using fractional separation of the extracts and operating at increasing pressure. RESULTS:The best processing conditions were found at 200 bar, 40 ∘ C and 1.2 kg h −1 SC-CO 2 flow rate, obtaining a final product with a concentration of 93% w/w of rotenone and rotenoids, and a yield of active principles of 6.70% w/w with respect to the vegetable matrix. Very small quantities of waxes were found, up to 0.05% w/w; this result can be explained considering the reduced surface-to-volume ratio of this vegetable material. CONCLUSION: Extraction kinetics data confirmed that, in this case, the extraction process was controlled by solubility limitation of the active compounds in the supercritical solvent.

Pachyrhizus spp. seed extracts control the Sclerotium rolfsii Sacc. mycelial growth

“…In order to produce pesticides based on this bean, it will be necessary to evaluate the P1, P5, P14, P15, P23, and P46 genotypes grain yield potential, as well as quantify their rotenone content. Then try to adapt the highperformance industrial extraction with supercritical CO 2 used in Derris elliptica (Baldino et al, 2018), which showed to have an efficiency of 93% for extracting rotenoids.…”

Enhancement of omega-3 content in sacha inchi seed oil extracted with supercritical carbon dioxide in semi-continuous process

“…The supercritical CO 2 density was found to increase with pressure, resulting in a larger solvent power to extract active principles as well as other unwanted compounds [13]. Based on the calculation using the Aspen HYSYS program, the density of CO 2 at 200 bar and 60 C was quite low (662.5 kg/m 3 ).…”

“…Low-to-moderate operating temperatures prevent undesired reactions and deterioration of products. Supercritical CO 2 extraction at relatively mild operating conditions led to high selectivity to active principles and a large reduction in the content of undesirable compounds, allowing it to be used on an industrial scale [13]. Oil extraction with supercritical CO 2 was also found to generate nearly pure products with high yields [3].…”

Influence of Supercritical Carbon Dioxide Extraction Conditions on Extraction Yield and Composition of Nigella sativa L. Seed Oil—Modelling, Optimization and Extraction Kinetics regarding Fatty Acid and Thymoquinone Content

“…Supercritical carbon dioxide has turned out to be an alternative, green, eco-friendly solvent. Changing operative pressure and temperature cause significant changes in the density of the solvent and therefore it is possible to control the extract composition without the need of extent organic solvents consumption [24].…”