Inhibitory effects of ten plant essential oils on three pathogens of cherry tomatoes

The aim of the study was to investigate inhibitory effects of plant essential oil on pathogens in the cherry tomatoes.In addition,the plant essential oil that had good fresh- keeping effect was selected. In this study,the fumigation method and direct contact method were used to select the essential oils which had inhibitory effects on three pathogens of cherry tomatoes.Moreover,the minimal inhibitory concentration( MIC) and minimum bactericidal concentration( MBC) of essential oils were determined.The minimal inhibitory concentrations of cinnamon essential oil,litsea cubeba oil,clove essential oil and oregano essential oil against Galactomyces candidum were 0.05 × 104,0.1 × 104,0.5 × 104μL / L and 0.5 × 104μL / L respectively. The minimum bactericidal concentration were 0.05 × 104,0.1 × 104,0.5 × 104μL / L and 1.0 × 104μL / L respectively.The minimal inhibitory concentrations of cinnamon essential oil,clove essential oil and oregano essential oil against Gibberella sp.strain were 0.05 × 104,0.2 × 104μL / L and 0.2 ×104μL / L respectively. The minimum bactericidal concentration were 0.05 × 104,0.2 × 104μL / L and 0.5 × 104μL / L respectively.The minimal inhibitory concentrations of cinnamon essential oil,clove essential oil,oregano essential oil and litsea cubeba oil against Mucor fragilis were 0.1 × 104,0.5 × 104,1.0 × 104μL / L and greater than 1.0 × 104μL / L respectively.The minimum bactericidal concentration were 0.1 × 104,0.5 × 104μL / L,greater than 1.0 × 104μL / L,greater than 1.0 × 104μL / L respectively. Cinnamon essential oil,litsea cubeba oil,clove essential oil and oregano essential oil had good inhibitory effect against Galactomyces candidum. Cinnamon essential oil,clove essential oiland oregano essential oil had high inhibitory activity against Gibberella sp.strain.Cinnamon essential oil and clove essential oil had good inhibitory effect against Mucor fragilis,butoregano essential oil had not obvious inhibitory effect and litsea cubeba oil had little inhibitory effect against Mucor fragilis.