This work uses GC-MS to analyze the bioactive compounds of Salvia rosmarinus essential oils(SREO)and evaluates their antibacterial,antifungal,and insecticidal effects,as well as the major component,1,8-cineole.Chemica...This work uses GC-MS to analyze the bioactive compounds of Salvia rosmarinus essential oils(SREO)and evaluates their antibacterial,antifungal,and insecticidal effects,as well as the major component,1,8-cineole.Chemical analysis identified 16 compounds accounting for 99.19%of the oil’s total content,with 1,8-cineole(33.17%),camphor(16.53%),α-pinene(14.46%),and camphene(8.14%)as the major constituents.Antimicrobial activities were assessed against pathogenic strains using minimal inhibit concentration(MIC)and minimum bactericidal concentration(MBC)assays.SREO exhibited a minimum MIC of 0.128%against P.aeruginosa,while 1,8-cineole showed a minimum MIC of 2.06%against the same strain,highlighting the higher efficacy of the complete oil compared to the isolated compound.Conversely,for antifungal activity,1,8-cineole displayed a lower MIC(2.06%)against A.niger and P.digitatum compared to SREO(4.125%against A.niger).Regarding aphicidal activity,results demonstrated the lethal effects of SREO on M.persicae,with an even more pronounced impact observed for 1,8-cineole.At one dose of 40μL/L air,SREO and 1,8-cineole resulted in 100%insect mortality within 24 h of exposure.After 12 h of exposure to SREO at concentrations of 5,10,20,and 40μL/L air,the mortality rates were 20%,36.67%,70%,and 93.33%.1,8-cineole showed maximum efficacy,achieving complete(100%)mortality within 12 h at 40μL/L air.展开更多
基金funded by Researchers Supporting Project number(RSP2025R119),King Saud University,Riyadh,Saudi Arabia.
文摘This work uses GC-MS to analyze the bioactive compounds of Salvia rosmarinus essential oils(SREO)and evaluates their antibacterial,antifungal,and insecticidal effects,as well as the major component,1,8-cineole.Chemical analysis identified 16 compounds accounting for 99.19%of the oil’s total content,with 1,8-cineole(33.17%),camphor(16.53%),α-pinene(14.46%),and camphene(8.14%)as the major constituents.Antimicrobial activities were assessed against pathogenic strains using minimal inhibit concentration(MIC)and minimum bactericidal concentration(MBC)assays.SREO exhibited a minimum MIC of 0.128%against P.aeruginosa,while 1,8-cineole showed a minimum MIC of 2.06%against the same strain,highlighting the higher efficacy of the complete oil compared to the isolated compound.Conversely,for antifungal activity,1,8-cineole displayed a lower MIC(2.06%)against A.niger and P.digitatum compared to SREO(4.125%against A.niger).Regarding aphicidal activity,results demonstrated the lethal effects of SREO on M.persicae,with an even more pronounced impact observed for 1,8-cineole.At one dose of 40μL/L air,SREO and 1,8-cineole resulted in 100%insect mortality within 24 h of exposure.After 12 h of exposure to SREO at concentrations of 5,10,20,and 40μL/L air,the mortality rates were 20%,36.67%,70%,and 93.33%.1,8-cineole showed maximum efficacy,achieving complete(100%)mortality within 12 h at 40μL/L air.
