Effects of solvent extraction system on concentration and antioxidant activity of strawberry phenolics

Strawberry fruits contain phenolic compounds that exhibit antioxidant, anticancer, antitherosclerotic, antiinflammatory and anti-neurodegenerative properties. This study was aimed to evaluate and characterize the phenolic composition and antioxidant activities of wild and cultivated strawberries native to Serbia. Three solvent systems were used for phenolic extraction (methanol, ethanol, and acetone) at the same concentrations (70 percent) and with 100 percent deionized water in presence 0.1 percent HCl. The efficiency of the solvents used to extract phenols from the 4 dried strawberry samples varied considerably. The polyphenol content of the dried strawberry samples was 9.54 to 20.38 mg gallic acid equivalent/g dried fruit. Photodiode-array detection (DAD) has been used for screening of the different classes of phenolic compounds. The total phenolics and antioxidant activities in extracts of a wild strawberry were higher than those cultivated samples.