The antimicrobial activity and chemical composition of Elsholtzia blanda (Benth.) Benth. essential oils in Lam Dong Province, Viet Nam

This study aimed to assess the chemical composition of essential oils Elsholtzia blanda (Benth.) Benth. in Lam Dong Province, Viet Nam, and evaluate their biological activities. Essential obtained by hydro-distillation aerial parts E. were analyzed gas chromatography-mass spectrometry (GC-MS). Thirty-one constituents identified oil, oil was predominantly monoterpenoid, with camphor (25.14%), camphene (22.64%), a-Pinene (11.53%), cineole (9.89%) as four most abundant constituents. The evaluation antimicrobial activity using agar wells diffusion method showed that all concentrations active against Gram-positive bacteria (Staphylococcus aureus), Gram-negative (Escherichia coli), pathogenic yeast (Candida albicans), they are sensitive resistant S. aureus strain.