Antiviral – Antimicrobial and schistosomicidal activities of Eucalyptus camaldulensis essential oils

Abstract

The investigation was designed to determine the antiviral, antimicrobial and schistosomicidal, effects of the leaf essential oil of Eucalyptus camaldulensis. Rotavirus Wa strain, Coxsackievirus B4, and herpes virus type 1 were affected by essential oil with percentage of reduction 50%, 53.3%, and 90% respectively. On the other hand, no effect was found at all on adenovirus type 7. Regarding antimicrobial effect, essential oil has high effects against gram positive and negative bacteria with inhibition zones ranged from 9.3 to 12.5 Mm. The same effect was observed on yeast (21% inhibition) and fungi (10% inhibition). The Scanning Electron Microscope observation showed that IC90 of essential oil produced sever damage in schistosoma worm’s typography. Therefore, the essential oils from E. camaldulensis are active candidates and could be used as RNA antivirus, antimicrobial and shistosomicidal agents in new drugs preparation for therapy of infectious diseases.