Essential oil of Rosmarinus officinalis L. from West Highlands of Algeria: Chemical characterization and in vitro antifungal activity against Fusarium oxysporum f. sp. albedinis

Rosmarinus officinalis is a well-studied species; however, R. essential oil (EO) from West highlands of Algeria was not investigated chemically and biologically. In this context, chemical composition EOs obtained leaves stem were determined by GC/MS analysis their antifungal activity against Fusarium oxysporum f. sp. albedinis (Foa) evaluated. The indicated that monoterpenes the dominant class compounds in both (oxygenated 84.9%, 52.4%) hydrocarbons (12.2%, 8.4 %), respectively. Among them, 1,8-cineole main component (leaves: 54.4%, stem: 29.7%), which classifies these as chemotype. vitro Eos evaluated through micro-atmosphere direct contact methods. Best inhibitory Foa after 7-day incubation using method relative growth reduction (RGR= 0.398; RGR=0.383) with stem,