Antioxidative phenolic compounds from the aerial parts of Cyperus exaltatus var. iwasakii and their HPLC analysis

Applied Biological Chemistry

Table 1 DPPH and ABTS radical-scavenging IC₅₀ values and total polyphenol content of extracts and fractions of CE collected from Hampyeong

Sample	IC₅₀ (mg/mL)		Total polyphenol (mg GAE/g ext.)
Sample	DPPH assay	ABTS assay	Total polyphenol (mg GAE/g ext.)
EtOH extract n-hexane fr CHCl₃ fr EtOAc fr n-BuOH fr Ascorbic acid	3.808 ± 0.114 5.429 ± 0.187 3.608 ± 0.099 0.793 ± 0.036 3.348 ± 0.852 0.187 ± 0.001	2.279 ± 0.156 9.969 ± 0.218 2.987 ± 0.166 0.312 ± 0.007 1.500 ± 0.097 0.188 ± 0.000	11.92 ± 0.79 12.23 ± 0.00 7.76 ± 0.46 36.77 ± 0.41 30.10 ± 0.50 –

fr. fraction. Ascorbic acid was the positive control, GAE gallic acid equivalent