Anti-Oxidation Property in Plants of Nakhon Si Thammarat Bay

Abstract

The most of Nakhon Si Thammarat Bay have the mangrove forests areas, which important for the natural ecosystem, especially the habitat of juvenile aquatic and variety of plant species. Some mangrove plants have pharmacological properties, in particular free radical scavenging and medicinal activity. The anti-oxidation property with DPPH (2,2-diphenyl-1-picrylhydrazyl) radical and total phenolic content of each 10 samples (Nypa Fruticans Wormb. (inflorescence), Nypa Fruticans Wormb. (fruit), Trianthema decandra L., Acrostichum aureum L., Acanthus ebracteatus Vahl, Suaeda maritima Dum., Sonneratia caseolaris (L.) Engl., Cissus carnosa Roxb., Sonneratia ovata Back and Flagellaria indica L. survey from Nakhon Si Thammarat Bay were studied in this research. It was found that, mangrove plants extracted in methanol, which exhibits the highest antioxidant activity with IC₅₀ = 1.00 mg/l is Sonneratia caseolaris (L.) Engl. This value was higher than standard ascorbic acid (IC₅₀ = 2.04 mg/l). Cissus carnosa Roxb. was negative. The total polyphenolic compound was highest in Nypa Fruticans Wormb. (inflorescence), at 168.50 mg gallic acid/100 g DW.