Effect of Solvent Polarity on the Efficiency of Ultrasound-assisted Extraction of Polyphenols From Apple Pomace
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In this paper influence of solvent polarity on the efficiency of ultrasound-assisted extraction of polyphenols from apple pomace was studied. In the experiment, three solvents were used: water, 60% ethanol and 96% ethanol. The extraction process was aided by ultrasonic waves at intensity of 60 W. Efficiency of extraction was determined by measuring total phenolic content, antioxidant activity, energy consumption and unit energy consumption. It has been shown that a 60% solution of ethanol is the most effective solvent for ultrasound-assisted extraction of polyphenols from apple pomace. The application of an appropriate solvent allows a significant reduction in the energy consumption of the extraction process, what is important for the sustainable use of energy sources in the food and agriculture sector.
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