Antimicrobial properties of the linalol‐rich essential oil of Hyssopus officinalis L. var decumbens (Lamiaceae)

摘要: The antimicrobial activity of essential oil Hyssopus officinalis L. var decumbens (Jordan & Fourr.) Briq. from France (Banon) and Italy (Piedmont) was studied taking account their chemical composition determined by GC GC–MS. Pinocamphone isopinocamphone are present in H. (4.4% 43.3%, respectively), according to the ISO 9841 Standard (1991 E) but they lacking var. decumbens, where linalol (51.7%), 1,8-cineole (12.3%) limonene (5.1%) instead predominant. disc diffusion tests carried out on Gram-positive (Staphylococcus aureus Enterococcus spp.) Gram-negative bacteria (Klebsiella oxytoca, Escherichia coli, Proteus mirabilis, Pseudomonas spp. two strains Salmonella showed an generally negligible for officinalis, broader, a few cases more evident (Enterococcus E. coli), decumbens. All yeasts (seven Candida albicans, C. krusei tropicalis) were strongly inhibited both species. In liquid medium MIC officialis always >1.2% v/v between 0.6 1.2% yeasts, while 0.15 0.6% bacteria, 0.3 0.3% yeasts. effect bactericidal. Linalol, lesser way, 1,8-cineole, may contribute greater comparison with be responsible antimycotic action observed oils, as suggested results pure reference substances. © 1998 John Wiley Sons, Ltd.