In vitro antibacterial activity of 34 plant essential oils against Alternaria alternata

Abstract

To determine the antibacterial effect of 34 plant essential oils on Alternaria alternata, 34 plant essential oils such as asarum essential oil, garlic essential oil, and mustard essential oil are used as inhibition agents to isolate A. alternata from citrus as indicator bacteria, through the bacteriostasis test and drug susceptibility test, the types of essential oils with the best inhibitory effect were screened and their concentration was determined. The results showed that the best inhibition effect was mustard essential oil with a minimum inhibitory concentration of 250 μl/L and a minimum bactericidal concentration of 250 μl/L. Followed by the Litsea cubeba essential oil and basil oil, the minimum inhibitory concentration is 500 μl/L.