Genetic differentiation and antioxidant activities of Bouea macrophylla Griffith in Nakhon Nayok Province

Abstract

Genetic differentiation and antioxidant activities in ethanolic extracts from leaves of Bouea macrophylla Griffith were determined. The result revealed genetic differentiation among sour ma-praang, ma-yong and sweet ma-praang of B. macrophylla Griffith (ϕPT =0.772, p-value=0.000). In addition, high genetic diversities were found in sour ma-praang and sweet ma-praang populations (P: 51.4 and 57.1 %; He: 0.1900.035 and 0.2240.036, respectively), but low genetic diversity was found in ma-yong population (P: 8.6 %; He: 0.0350.021). Total phenolic contents of sour ma-praang, ma-yong and sweet ma-praang were estimated as 680.51±89.81, 701.03±59.89 and 530.85±41.23 mg gallic acid/g extract, respectively. Free radical scavenging activities of sour ma-praang, ma-yong and sweet ma-praang were found (1/EC50= 4.17, 1.43 and 1.37, respectively) corresponding with metalchelating activities (1/EC50=0.83, 0.65 and 0.17, respectively). Therefore, the obtained data may be applied to cultivation and utilization of their leaves as source of natural phenolics and antioxidants. © The Korean Society for Applied Biological Chemistry 2017.