Abstract
Abstract Objectives Mesua ferrae, from the family of Calophyllaceae, is traditionally used for the treatment of piles, fever and renal disorders. The present study was aimed to examine the antibacterial compounds from the leaves of M. ferrae and their β-lactam antibiotic potentiate activities against Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA). Methods Stigmasterol (1) and β-caryophyllene oxide (2) were isolated from the n-hexane fraction of the leaves of M. ferrae using a bioassay-guided fractionation approach. Results The isolated compounds displayed anti-Staphylococcus and anti-MRSA activities. It is worth to note that both compounds demonstrated synergism with β-lactam antibiotics against S. aureus and MRSA. Gas chromatography–mass spectrometry (GC–MS) analysis indicated the n-hexane fraction was dominated by triterpenes and sesquiterpenes, suggesting the total antibacterial activity exhibited by the fraction. Conclusion Based on the findings, it could conclude that M. ferrae is a promising natural source for the discovery of new anti-MRSA lead compounds.
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