Abstract
The chemical composition of essential oil obtained from the leaves of Syzygium grande was analyzed using GC-MS. β-caryophyllene (18.38 %) was the major constituent present in the leaf oil followed by 10s,11s-himachala-3(12),4-diene (12.06 %), (+)-aromadendrene (10.51% ), α-caryophyllene (10.22 %) and α- selinene (8.94 %). The antimicrobial activity of the oil was determined and the results showed higher activity against bacteria whereas fungal species were found to be more resistant.