Recovery and Purification of Antioxidant Compounds from Plant Origin Agro-Industrial By-products

Aquaculture and agriculture‐by products as sustainable sources of omega‐3 fatty acids in the food industry

“…Supercritical status is achieved when the temperature and pressure of a substance rise above its critical value, and fluid behave as a hybrid between a liquid and a gas [90]. Supercritical fluids show better mass transfer than liquids, due to their low viscosity and higher diffusivity properties, reducing the extraction time and providing higher extraction yields [97, 116]. Another major advantage of SFE is the reduced use of organic solvents (zero in many cases) allowing the use of non‐toxic solvents, such as carbon dioxide (CO 2 ).…”

“…UAE requires small amount of solvent and energy and the temperature and extraction time are significatively reduced compared other conventional methods [114]. UAE is based on high‐energy ultrasound waves passing through the liquids and creating high/low‐pressure cycles, resulting in the phenomenon of acoustic cavitation that leads to cell rupture, intensifying solvent penetration and improving mass transfer between the intercellular materials and the solvent [91, 115, 116]. UAE has been applied for oil extraction from seeds (Castejón et al, 2018;; Villanueva‐Bermejo et al, 2019) [59] and microalgae [4].…”