High-density extraction solvents, being mostly halogenated, are generally toxic and have high background emission in ICP-OES, accordingly alcohols with lower densities than aqueous solutions and less volatile were chosen in this test.
Dispersive liquid-liquid microextraction (DLLME) is another type of microextraction method that consists of a trinary system of solvents including a high-density and water- immiscible extraction solvent (extractant), a dispersive solvent highly miscible with the extraction solvent and aqueous sample, and an aqueous sample (Rezaee et al. 2006).
Using ASE the method was featured as short extraction times, reduction use of extraction solvent, high extraction yields, with high level of automation.
The maximal number of significant peaks in the fingerprints was obtained using a methanol water mixture as extraction solvent, high ultrasonication time and high temperature.
Through this procedure, the total flavonoids of Scutellariae barbatae herba can be totally extracted using water as extraction solvent rather than high concentration ethanol was used in traditional extraction method.
It is an advantageous technique due to shorter extraction time, higher extraction rate, less requirement of solvent and lower cost over traditional method of extraction of compounds (Delazar et al. 2012).
This method doubled as classical and traditional solvent extraction techniques with reduced extraction time, higher selectivity, low solvent consumption, and higher extraction rate.
Solvent extraction is an energy-efficient process to treat phenolic effluents in the industry, and a key step in designing an industrial extraction process is to screen a proper extraction solvent with high extraction efficiency and good physical properties.
Particle size and extraction solvent had high influence on total phenolic compounds, total flavonoid and tannin content as well as on antioxidant activity.
The particle size and the extraction solvent had high influence on the total phenolic compounds, total flavonoid and tannin content as well as on the antioxidant activity.
