Research of ultrasound-assisted extraction of polyphenols and polysaccharides from okra

The ultrasonic-assisted extraction process for polyphenols and polysaccharides from okra by water were studied in this paper. Effects of four crucial factors including ultrasound treatment time ultrasound temperature, material /liquid ratio and ultrasonic power on the yield of polyphenol and polysaccharide were investigated.Through orthogonal experiments, the optimal extraction process conditions were determined as follows: ultrasound treatment time 90min, ultrasound temperature 45℃, material /liquid ratio1 ∶ 45 and ultrasound power 84W. Under these conditions, the extraction yield of polyphenols and polysaccharides from okra were 4.207mg /g and 2.671mg /g, respectively.