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Polyethylene glycol aqueous solution (PEGs), an environmentally friendly solvent was used, for the first time, to develop an extraction method for crude polysaccharides from pericarpium granati with ultrasonic–microwave-assisted extraction (UMAE). Compared with other extraction solvents, PEGs, especially PEG400, displayed a higher extraction yield. The extraction conditions were an ultrasonic power...
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