Abstract

• The medicinal plant Saraca indica L. belongs to the family Caesalpiniaceae. This plant is known as Thaw-ka in Myanmar. The specimens were collected from Dagon University, East Dagon Myothit Township, Yangon Region, during the flowering and fruiting period, February to June, 2019. In this research morphological characters, preliminary phytochemical tests and antimicrobial activities tests were studied. In the morphological study, the plant was small tree, dark green leaves and grey to dark brown barks. The leaves contain glycoside, tannin, steroids, carbohydrate, ∞-amino acid, alkaloid, saponin, phenolic compound and terpenoid. Reducing sugar, and starch were absent. The antimicrobial activities were carried out by agar well diffusion method on six types of test microorganisms. Ethanol extract and acetone extract showed the significant activities on all test microorganisms. Methanol extract showed the moderate against on all test organisms and ethyl acetate, chloroform and pet ether extracts showed the negative results for all types of test microorganisms.