Antioxidative Efficacies of Stephanandra incisa Methanolic and Ethanolic Extracts in a Cell-free System
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This study aimed to evaluate the antioxidative efficacies of Stephanandra incisa methanolic and ethanolic extracts (SIME and SIEE, respectively) in a cell-free system. Respective total polyphenol contents of SIME and SIEE were 12.8 and 17.9 tannic acid equivalents (TAE) mg/g, and respective total flavonoid contents were 0.38 and 0.39 quercetin equivalents (QE) mg/g. At 1,000 μg/mL, respective ABTS+ radical scavenging activities of SIME and SIEE were 97.4% and 99.1%, respective ferric reducing antioxidant powers were 28.1 and 37.9 μM/g, and respective hydrogen peroxide scavenging activities were 28.4% and 32.8%. These results suggest that SIEE possesses higher antioxidative efficacy than SIME.
Abstract
This study aimed to evaluate the antioxidative efficacies of Stephanandra incisa methanolic and ethanolic extracts (SIME and SIEE, respectively) in a cell-free system. Respective total polyphenol contents of SIME and SIEE were 12.8 and 17.9 tannic acid equivalents (TAE) mg/g, and respective total flavonoid contents were 0.38 and 0.39 quercetin equivalents (QE) mg/g. At 1,000 μg/mL, respective ABTS+ radical scavenging activities of SIME and SIEE were 97.4% and 99.1%, respective ferric reducing antioxidant powers were 28.1 and 37.9 μM/g, and respective hydrogen peroxide scavenging activities were 28.4% and 32.8%. These results suggest that SIEE possesses higher antioxidative efficacy than SIME.
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