| 초록 |
Response surface methodology were applied for monitor the yields of polyphenols from wheat sprout(Triticum aestivum L.), blueberry(Vaccinium spp.), and black chokeberry(Aronia melanocarpa) under different extraction conditions. The maximum yield were 26.50%, 98.40%, 70.00%, respectively at 100 mg/ml of sample concentration to solvent ratio, 50 ℃ extraction temperature and 15 hr extraction time. The maximum total phenolics were 1.932 mg/g , 1.857 mg/g, 1.875 mg/g gallic acid equivalent and 2.110 mg/g, 2.055 mg/g, 2.104 mg/g quercetin equivalent. The maximum DPPH radical scavenging activity were 85.30%, 64.78%, 63.14%, respectively. The maximum ABTS radical scavenging activity were 97.38%, 98.02%, 95.77%, respectively. The optimum ranges of extraction conditions were as follows: ethanol concentration of 70~80%, extraction time of 12~15 hr, and extraction temperature of 40~50℃. |
