Evaluation of Antioxadation and Antibacterial Properties of Some Thai Medicinal Plants in Phetchabun Province

Abstract

The objectives of this research were to evaluate anti-free radical and investigate antibacterial activities of some Thai medicinal plants. Five Thai medicinal plants were investigated i.e. Crateva religiosa Ham., Monochoria hastata (L.) Solms., Polygonum odoratum Lour., Diplazium esculentum (Retz.) Sw. and Hiptage candicans Hook.f.. The highest content of total phenolics and flavonoids were found in the crude extract of Hiptage candicans Hook.f. The concentration of total phenolics and flavonoids in this plant were 11.47±0.22 mg GAE/100 mg and 8.05±0.02 mg CE/100 mg, respectively. Moreover, crude extract of Hiptage candicans Hook.f. had a high effective on free radical scavenging activities of DPPH (The IC₅₀ value were 0.25±0.00 mg/ml). ABTS assays; the IC₅₀ value were 0.12±0.03 mg/ml, which had not effected on antibacterial.