ANTIFUNGAL ACTIVITY OF ESSENTIAL OILS FROM SCHINUS

SAMPIETRO, D.A.; CORBALAN, L.J.; VATTUONE, M.A.; CATALAN, C.A.N.

Tucuman

Congreso; XXX ANNUAL SCIENTIFIC MEETING TUCUMAN BIOLOGY ASSOCIATION; 2013

TUCUMAN BIOLOGY ASSOCIATION

The aims of this work were to characterize the composition of essential oils from native Schinus of northwest Argentina, and to determine their antifungal activity on toxigenic fungi. Essential oils were extracted from fruits and leaves of Schinus areira and fruits of S. gracilipes, and S. fasciculatus. Their components were identified by GC-MS and calculation of kovats indexes. The minimum inhibitory concentrations required for the inhibition of 50% (MIC50) and 100% (MIC100) of mycelial growth were determined on F. verticillioides and F. graminearum by microdilution assays. Thyme essential oil was used as positive control. Essential oils contained sabinene and bicyclogermacrene (S. areira, leaves); sabinene, limonene, β-phellandrene (S. areira, fruits), sabinene, α-phellandrene and limonene (S.fasciculatus, fruits); and α-pinene, β?pinene and sabinene (S. gracilipes, fruits). MIC100 of oils from fruits and leaves of S. areira, and fruits of S. gracilipes were 24? (F. verticillioides) and 12? (F. graminearum), and for F. fasciculatus 12? (F. verticillioides) and 6? (F. graminearum). The essential oil from fruits of F. fasciculatus showed the highest antifungal activity which was associated with α-phellandrene. The activity of essential oils of Schinus was 30-60 and 17-9-fold lower than that observed for thyme oil.