Abstract
This study was conducted to monitor the quality characteristics Citrus unshiu ethanolic extracts by a response surface methodology. In extraction conditions based on the central composite design with variations in ethanol concentration (0~100%), extraction temperature(), and ratio of solvent to sample(20 mL/g). The maximum value of yield was 36.31% at , 67.13% of ethanol concentration. The extraction yield and total polyphenol content were improved with the increase of ethanol concentration than extraction temperature. Total flavonoid content was improved with the increase of extraction temperature than ethanol concentration. The coefficients of determinations() were 0.8646(p in extraction temperature, and 20 mL/g in ratio of solvent to sample.
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