Isolation of Volatiles from Oak Wood (Quercus alba) by a Thermomechanical Process: Screening of some Processing Parameters

Impact of ultrasound on solid–liquid extraction of phenolic compounds from maritime pine sawdust waste. Kinetics, optimization and large scale experiments

“…The particle size controls the mass transfer kinetics and the access of the solvent to the soluble components [29,12]. In a general way, higher extraction efficiencies can be achieved by applying smaller particle sizes, which results in an increase in mass transfer surface and in quantity of soluble fraction isolated.…”

“…Indeed, the traditional extraction methods including maceration, Soxhlet extraction and percolation required a long time of extraction which induces an important energy consuming, a large quantity of residual solvents and the bioactive compounds which are very sensitive to oxygen and heat can be degraded [6,7]. In recent years, a combination of organic solvent with low boiling point and steam distillation method was explored [7,8] as well as some intensified extraction methods including microwave [9,10], supercritical fluids [11], D.I.C-assisted hydrodistillation (D.I.C: Détente Instantanée Contrôlée in french) which is based on a thermomechnical extraction process [12], ultrasound assisted extraction [13,14], ionic liquid-based microwave-assisted extraction [15], ohmic-assisted hydrodistillation [16], and enzyme-assisted microwave hydro-distillation [17]. Among these numerous extraction processes, ultrasonication is reported to attack the integrity of plant cell walls resulting in the release of extractives and the most accessible polysaccharides as well as release of less extractable cell wall components [18,19].…”

Valorization of industrial wastes from French maritime pine bark by solvent free microwave extraction of volatiles

“…These new green processes will be more environmentally friendly with a shorter extraction times, lesser consumption of organic solvent and energy, and minor waste and CO 2 emissions, while maintaining a high quality of extract. Some intensified extraction methods were investigated including microwave (Gholivand et al, 2013;Fern andez-Agull o et al, 2015) supercritical fluids (Herzi et al, 2013;Stashenko et al, 2013), D.I.C-assisted extraction (Mellouk et al, 2013;Rezzoug, 2009) or ultrasound assisted extraction (Meullemiestre et al, 2014;Gonz alez-Centeno et al, 2015;Ghitescu et al, 2015). Currently, application of microwave technology-based methods such as solvent free microwave extraction (SFME) becomes highly desirable as a valid alternative to conventional methods and this extraction technology was the subject of several studies (Chen et al, 2011;Ma et al, 2012;Ranic et al, 2014).…”

Isolation of volatils from maritime pine sawdust waste by different processes: Ultrasound, microwave, turbohydrodistillation, and hydrodistillation

“…In a recent study on the effect of thickness on isolation of volatiles from oak wood (Mellouk et al 2013), we showed that the yield of isolated oil is strongly dependent on the sample thickness which influences negatively the yield. In this study, the form of maritime pine (P. pinaster) sawdust (Figure 1) was approximately (40 × 3.5 × 0.5 mm).…”