Weerasak Songoen
Kasetsart University, Thailand
Title: Preliminary antibacterial activity from the stem extracts of Nauclea orientalis and Artocarpus lakoocha
Biography
Biography: Weerasak Songoen
Abstract
The antibacterial activity screening test of the stem extracts of Nauclea orientalis and Artocarpus lakoocha was accomplished using agar well diffusion method. Dried stem of both medicinal plants was sequentially extracted by hexane, dichloromethane, ethyl acetate and methanol. Inhibition zone of the extracts against ten bacterial strains including of Grampositive: Bacillus megaterium, Staphylococcus aureus, Streptococcus agalactiae, Bacillus subtilis and Gram-negative: Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Vibrio parahaemolyticus, Salmonella spp., Enterobacter aerogenes wasevaluated at 10,000 ppm concentration. The results revealed that the ethyl acetate and methanol extracts of A. lakoocha showed the inhibition against Vibrio parahaemolyticus, Staphylococcus agalactiae, Escherichia coli and Bacillus subtilis. Furthermore, the dichloromethane extract of N. orientalis and A. lakoocha also exhibited the inhibition against Vibrio parahaemolyticus and Streptococcus agalactiae, respectively. This present study suggested that the stem extracts of A. lakoocha can be applied for developing potential drug candidates from the natural source.