Supercritical CO2 extraction of allicin from garlic flakes: Screening and kinetic studies

Stability and extraction of bioactive sulfur compounds from Allium genus processed by traditional and innovative technologies

“…have been well documented, with respect both to its analytical (Calvey et al, 1998(Calvey et al, , 1997Rybak et al, 2004;Zalepugin et al, 2015) and quantitative recovery (Del Valle et al, 2012;Martin and Guyer, 2004;Sass-Kiss et al, 1998a, 1998bYe and Lai, 2012). SFE utilizes supercritical fluids, usually supercritical CO2, as the extraction solvent, which provides superior extraction efficiency, particularly useful for the selective extraction of targeted compounds in high purity (Poojary et al, 2016).…”

“…The highest extraction yield of 4.69 g/kg DW was obtained at an optimal pressure of 20.6 MPa, a temperature of 40.6 °C, a time of 260 min, a CO2 flow rate of 22 L/h, and an entrainer ratio of 0.1 mL/g ethanol (Ye and Lai, 2012). Based on kinetic investigations, it was recommended that operating conditions of 55 °C, 30 MPa, 4 h time and 55 kg/kg CO2/substrate was suitable for optimal recovery of allicin rich oleoresins (≥19 g/kg oleoresin/substrate containing ≥75 mg/kg allicin/oleoresin) from garlic flakes (Del Valle et al, 2012). Although authors observed an increasing yield of oleoresins with pressure and temperature, the concentration of allicin in the extract decreased at high temperatures; thus the authors suggested the usage of an intermediate temperature and pressure (55 °C and 30 MPa), where higher selectivity for allicin could be achieved (Del Valle et al, 2012).…”

Storage Stability of Garlic Fortified Chicken Bites

“…The extracts were evaporated till dry. Whereas, supercritical fluid extract (SFE) was obtained using CO 2 at 5800 psi pressure and 50 o C of temperature [17].…”

Supercritical fluid extraction of lipids from linseed with on-line evaporative light scattering detection

“…Channeling effects have been observed in SFE [11,12]. However it has been relatively unexplored, although it has been noted that a general trend exist within the literature to add dispersants such as glass beads with the motivation to hinder channeling effects.…”