However, the physiological activity of this lectin is not clear. Additionally, the methanolic extract of A. polytrich has antioxidant activity and prevents lipid oxidation, scavenging radicals and chelating metal ions in vitro (Mau, Chao, & Wu, 2001). Furthermore, A. polytrich also exhibits antinociceptive characteristics. Subcutaneous injection of four compounds isolated from A. polytricha can reduce acetic acid-induced writhing in mice (Koyama et al., 2002). These data reveal that A. polytricha constituents have potential pharmacological applications.