Scavenging activities of the solvent extracts from M. paniculata towards DPPH, ABTS and hydroxyl radicals are shown in Figure 1, respectively. Figure 1 illustrates that the solvent extracts from the stems of M. paniculata showed a concentration-dependent DPPH radical scavenging activity. The DPPH radical scavenging effect of the solvent extracts at 500 μg/mL decreased as follows: EtOAc > n-BuOH > water > petroleum ether (P.E.), and were 94.19%, 90.50%, 82.85% and 33.48%, respectively (Figure 1A).