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Fusarium graminearum  Schw. is associated with diseases in seeds and seedlings, mainly in maize, and causes damage to crops and food production. We determined the chemical compositions of essential oils from  Pogostemon cablin  (Blanco) Benth and  Baccharis dracunculifolia  DC., and evaluated their antioxidant and antifungal activity against  F. graminearum . The oils were applied to the fungus using disc diffusion technique at concentrations of 8.0, 4.0, 2.0 and 1.0 μL mL −1 . Fungistatic effects of  P. cablin  oil were detectable at 8.0 μL mL −1 , with 80.0% inhibition of fungal growth. This oil contains mono and sesquiterpenes that may be toxic to fungal cell structures.  P. cablin  oil also had antioxidant activity in free radical sequestration experiments, where as oil from  B. dracunculifolia  had limited effects. We conclude that essential oil from  P. cablin  has greater anti-phytopathogenic and antioxidant activity than that from  B. dracunculifolia .

natural product research

Chemical composition, antifungal and antioxidant activity of essential oils from  Baccharis dracunculifolia  and  Pogostemon cablin  against  Fusarium graminearum