Abstract

• Careya arborea Roxb. belongs to the family Lecythidaceae is found in many places of the world. It is also known as Bumbwe in Myanmar and Wild guava in English. The plants were collected from West Yangon University campus during the flowering period of May - November, 2019. The flowers are traditionally used to treat cough and cold, fever and tonic. In this study, the plant is deciduous trees, alternate and broadly obovate simple leaves, terminal spike with yellowish-white flowers, stamens with three whorls, inferior cup shaped ovary and large berry fruit with persistent style and calyx. In phytochemical screening, the presence of alkaloid, glycoside, saponin, phenolic compound, flavonoid, carbohydrate, steroid, terpenoid, tannin and reducing sugar were detected in flowers. However, cyanogenic glycoside and amino acid were absent. In the physicochemical properties, the powdered flowers are the most soluble in aqueous extract. The elemental analysis of powdered sample was determined by using Energy Dispersive X-ray Fluorescence Spectrophotometer. It was observed that the potassium was principal element. Antimicrobial activities of plant extracts are tested with six types of microorganisms by using agar well diffusion method. Ethanol extract of flowers exhibited effective against on Pseudomonas aeruginosa.