Determination of Antimicrobial and Antioxidant Activities of Lavandula angustifolia Volatile Oil

Abstract

This study aims to evaluate the volatile oil components by headspace gas chromatography/mass spectroscopy (headspace/GC-MS) analysis, the antimicrobial effect on some gram-negative/positive pathogenic microorganisms and lactic acid bacteria (by agar well diffusion, MIC test) and antioxidant capacity (DPPH, metal chelating, FRAP) of the oil extracted from Lavandula angustifolia (LA) by the clevenger method. As a result of the analysis, it was determined by headspace/GC-MS analysis that eucalyptol was the highest with the value of 22.58%, α-linalol was the second with the value of 19.44% and linalyl acetate was 14.61%. Lavandulol, essential component of Lavender, was determined by 1.39%. The highest antimicrobial effect of LA oil was found on Bacillus subtilus and MRSA (zone diameter of 24 to 22 mm, respectively), following on Staph. aureus. It was found that antibacterial effects on Staph. aureus and E. coli, Campliobacter jejuni, Salmonella poona, and lactic acid bacteria such as Lactobacillus reuteri and Lactobacillus plantarum (17, 16, 14, 14, 12, 12, 11 mm zone diameter). Therewithal, a significant antioxidative effect was determined on DPPH, FRAP and metal chelating analyzes. Also, the importance of its use in complementary medical and aroma therapy for preventive and symptomatic treatment of diseases. It is thought that present research will shed light on in vitro/in vivo studies to be carried out with LA oil.