To identify potent plant extracts with strong antioxidant activity, we evaluated the free radical scavenging activity of 184 obtained from Freshwater Bioresources Culture Collection (FBCC) Nakdonggang National Institute Biological Resources (Republic Korea), as various have been used therapeutically to prevent chronic diseases associated oxidative stress. From them, three (FBCC-EP858 Ammannia m...

Two new compounds: 3-β,15-α,23,28-tetrahydroxyolean-12-en-3-O-arabinopyaranoside and 3-β,23,28-trihydroxy-olean-12-en-3-O-β-D-glucopyranoside were isolated from the aerial parts of Ammania auriculata along with the known compounds kaempferol, β-sitosterol-3-O-β- D-glucoside, 2-α,3-β,23-trihydroxyolean-12-en-28-oic acid-28-O-β-D-glucopyranoside, quercetin, kaempferol-3-O-α-L-arabinofuranoside, k...