Abstract
The objective of this study was to determine chemical composition and biological activity of essential oil of the leaves of Lantana camara from Burkina Faso. The essential oil was obtained by hydrodistillation and analyzed by GC and GC/MS. Antioxidant activity was determined by 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay and Ferric reduction antioxidant power (FRAP) test. Antimicrobial activity was assessed by agar disc diffusion method and microdilution method. The main components of essential oil of L. camara were caryophyllene oxide (23.015%), spathulenol (13.421%), humulen-1, 2-epoxide (8.046%), β-caryophyllene (7.93%), E-nerolidol (6.933%) and α-humulene (4.925%). The oil showed good radical scavenging power and moderate reducing power compared with quercetin, ascorbic acid and butylhydroxytoluene (BHT). Essential oil of L. camara showed antibacterial activity with inhibition diameters between 08±00 mm and 23.5±2.12 mm. Minimum inhibitory concentration (MIC) values were ranging from 4% to 8% and minimum bactericidal concentration (MBC) were determined for the strains of Escherichia coli (8%) only. L. camara essential oil had inhibitory action on all fungal strains with MICs of 2% to 4% and minimum fungicidal concentration (MFC) of 4% for Saccharomyces cerevisiae. Hence L. camara essential oil could be used as antifungal agent, as antioxidant and could be a potential antibacterial agent especially against Escherichia coli.
Highlights
There has been a renewed interest in medicinal and aromatic plants and their extracts
Minimum inhibitory concentration (MIC) values were ranging from 4% to 8% and minimum bactericidal concentration (MBC) were determined for the strains of Escherichia coli (8%) only
L. camara essential oil could be used as antifungal agent, as antioxidant and could be a potential antibacterial agent especially against Escherichia coli
Summary
There has been a renewed interest in medicinal and aromatic plants and their extracts. L. camara is a woody straggling plant with various flower colors, red, pink, white, yellow and violet. It is an ever green strong smelling shrub, with stout recurred prickles, leaves opposite, ovate, acute or sub-acute, crenate serrate, scab rid on both side [2]. The present work report results of phytochemical analysis, antioxidant and antimicrobial proprieties of L. camara essential oil from Burkina Faso. Such a study might help in the contribution of the ongoing search for beneficial uses of this plant to eradicate various resistance infectious diseases
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