Extraction is the first step in the isolation of phenolic compounds from agro-industrial residues and plant materials. Different techniques have been applied to recover antioxidant phenolic
compounds from natural sources including solid–liquid extraction
with organic solvents, ultrasound-assisted extraction, microwaveassisted extraction, supercritical fluids extraction, and high pressure processes [10–12]. Among these techniques, solid–liquid
extraction is widely employed for phenolics extraction from vegetable sources. However, the efficiency of the extraction process is
affected by several factors such as the type of solvent and its concentration, the solvent/solid ratio, the number of extraction steps,
pH, time of contact, temperature, and particle size of the solid
matrix[13–15]. Thus, it is very important to optimize the extraction conditions in order to maximize the extraction efficiency to
each raw materia
Extraction is the first step in the isolation of phenolic compounds from agro-industrial residues and plant materials. Different techniques have been applied to recover antioxidant phenolic
compounds from natural sources including solid–liquid extraction
with organic solvents, ultrasound-assisted extraction, microwaveassisted extraction, supercritical fluids extraction, and high pressure processes [10–12]. Among these techniques, solid–liquid
extraction is widely employed for phenolics extraction from vegetable sources. However, the efficiency of the extraction process is
affected by several factors such as the type of solvent and its concentration, the solvent/solid ratio, the number of extraction steps,
pH, time of contact, temperature, and particle size of the solid
matrix[13–15]. Thus, it is very important to optimize the extraction conditions in order to maximize the extraction efficiency to
each raw materia
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