Surveying the chemical composition and antibacterial activity of essential oils from selected medicinal plants against human pathogens

摘要

Background and Objectives: Essential oils (EOs) with different biological activities, such as antibacterial properties, are a valuable resource for developing new drugs. Materials and Methods: Ingredients of six medicinally important EOs, including Artemisia dracunculus, Anethum graveolens, Citrus limon, Citrus sinensis, Cinnamomum zeylanicum and Zingiber officinale, were identified using GC-MS analysis. Moreover, their five major compounds were also listed. Furthermore, the half-maximal inhibitory concentration (IC 50 ) against four important human bacteria was also investigated using the 96-well plate microdilution. Results: C. sinensis EO with IC 50 of 1.0 and 4.7 mg.mL -1 have the most effect on the growth of S. aureus and P. aeruginosa . Moreover, EOs of Cinnamomum zeylanicum (IC 50 : 1.0 mg. mL -1 ) and Artemisia dracunculus (IC 50 : 1.3 mg.mL -1 ) significantly showed better inhibitory effect on E. coli and K. pneumoniae. Conclusion: These EOs could be used for developing inexpensive, potent, and green antibacterial agents.