Freeze drying was compared with spray regarding feasibility to process wild thyme drugs in order obtain dry formulations at laboratory scale starting from liquid extracts produced by different extraction methods: maceration and heat-, ultrasound-, microwave-assisted extractions. Higher total powder yield (based on the weight prior extraction) achieved freeze than lower loss of polyphenol conten...

Interests in Polycyclic Aromatic Hydrocarbons (PAHs) and their derivatives (Nitrated PAHs, Oxygenated Azaarenes Sulfur Heterocycles) have been growing because of toxicity. The first part this review gathers information on sampling Compounds (PACs) airborne particulate matter (PM), dust soot, extraction thanks to solvent methods, sample clean-up for further analysis. Atmospheric PM is generally ...

Given the growing tendency of consumers to choose products with natural ingredients, food industries have directed scientific research in this direction. In regard, algae are an attractive option for research, since they can synthesize a group secondary metabolites, called phenolic compounds, associated really promising properties and bioactivities. The objective work was classify major compare...

Traditional hydrodistillation (HD), steam distillation extraction (SD), organic solvent extraction (SE), and microwave assisted hydrodistillation (MWHD) techniques were compared and evaluated for their effectiveness in the isolation of essential oil of Melissa officinalis from Algeria. The microwave assisted hydrodistillation technique was optimized in terms of both delivered power and time dur...

The kinetics of polyphenol extraction from brewer's spent grain (BSG), using a batch system, ultrasound assistance, and microwave assistance and the evolution of antioxidant capacity of these extracts over time, were studied. The main parameters of extraction employed in the batch system were evaluated, and, by applying response surface analysis, the following optimal conditions were obtained: ...