On the Solubility of Glycerides and Fatty Acids in Compressed Gases in the Presence of an Entrainer

Techno-economic evaluation of the extraction of turmeric (Curcuma longa L.) oil and ar-turmerone using supercritical carbon dioxide

“…This phenomenon is characterized by high solubilities of the solutes at low temperatures before the inversion point (pressure). Conversely, high solubilities are observed at high temperatures when using pressures higher than that at the inversion point [40]. At low pressures (here between 10 and approximately 20 MPa), small variations in the temperature and/or pressure had a strong influence on the solvent density [41].…”

Extraction of Phospholipids from Salmon Roe with Supercritical Carbon Dioxide and an Entrainer

“…An entrainer is a substance of medium volatility added to a mixture of compressed gas and a low volatility substance (20). As the solubility in SC-CO 2 at the same extracting conditions (temperature and pressure) is drastically enhanced, extraction can be conducted at a lower pressure (25). The logical choice for a co-solvent in the food industry would be ethanol.…”

Bioseparation of Nutraceuticals Using Supercritical Carbon Dioxide

“…Density of a supercritical fluid solution is increased by the addition of a cosolvent, thereby affecting the solubility of a solute beneficially. In this context, it is noteworthy to mention the so-called cosolvent effect (also referred to as the entrainer effect) (Walsh et al 1987), which refers to the dramatic increase in both solubility and selectivity when certain cosolvents are added to a supercritical fluid (Brunner and Peter 1982;Brunner 1983;Van Alsten and Eckert 1993;Ruckenstein and Shulgin 2001;Ruckenstein and Shulgin 2002). The cosolvent effect can lead to an increase in the solubility of a solute in a supercritical fluid by up to several hundred percent (Schmitt and Reid 1986), which for some systems is more than what can be achieved by a pressure increase of several hundred bars (Dobbs et al 1986).…”