Polyalthia longifolia is a tall evergreen tree belongs to the family Annonaceae. The present study includes the detailed exploration of biochemical constituents and anti-microbial activities of bark of Polyalthia longifolia. To study the biochemical and antibacterial activity, the Methanol extract of powdered bark of Polyalthia longifolia was prepared by using Soxhlet apparatus. Then the extract studied in GC-MS to know the biochemical. | A study on biochemical constituents and anti-bacterial activity of bark of polyalthia longifolia