FRAP value of the 6 components in the extracts from P. hexandrum rhizome. ASA was tested as a positive control. The data are the mean of triplicate measurements. Different letters on top of the column were considered significant at p < 0.01.
Li et al. BMC Complementary and Alternative Medicine 2012 12:263 doi:10.1186/1472-6882-12-263