The antifungal activity of plant oils and extracts were tested against Penicillium sp. and Aspergillus
niger. The essential oils of Fennel (Foeniculum vulgar L.) and Caraway (Carum carvi L.), and also plant
extracts of Fennel, Carawayi and Sage (Salvia officinalis) were used, too. The essential oil treatments were
performed at two concentrations (0.25 and 0.5%) and extract treatments applied at 4 levels (25%, 50%, 75%
and 100%). All treatments were showed different activities in control of fungi growth. A significant decrease in
mycelial growth was obtained with the addition of 0.25% and 0.5% in each of two essential oils in PDA
medium. Carum carvi essential oil inhibited mycelial growth of two fungi tested at 0.5 % level. Among of plant
extracts, Carum carvi was had highest inhibition with highest concentration, which was 100% (v/v) level. The
results indicated that the Carum carvi extract inhibited growth of Aspergillus niger (53.68 %) and Penicillium
sp. (88.556 %) in compared to control.