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Research Journal of Microbiology
Year: 2018  |  Volume: 13  |  Issue: 2  |  Page No.: 119 - 126

Antimicrobial Efficacy of Three Essential Oils against Decaying Cedar Wood Isolates

Fadoua Bennouna, Yassir Lekbach, Moulay Sadiki, Soumya El Abed, Saad Ibnsouda Koraichi and Mohammed Lachkar    

Abstract: Background and Objective: The use of traditional methods as synthetic chemical products to protect cedar wood raises concerns because of the potential negative impact of these products on the public health and environment. The aim of this study was to investigate the chemical composition of three essential oils: Mentha pulegium, Rosmarinus officinalis and Cananga odorata and their antimicrobial effect against six fungi and two bacteria causing degradation of cedar wood. Materials and Methods: Determination of the chemical composition of essential oils was conducted using gas chromatography-mass spectrometry (GC-MS) (Trace GC Ultra). The minimal inhibitory concentrations and minimal bactericidal/fungicidal concentrations were also determined using the broth microdilution assays. Results: The GC/MS analysis of oils studied showed that menthone and pulegone were the major components of Mentha pulegium essential oil, camphene and α-humulene were the major ones in Rosmarinus officinalis, whereas linalool and geranyl acetate were the major components for Cananga odorata. Results also showed potent antifungal activity against all fungi tested, with MICs ranging from 0.0625-0.25% for Mentha pulegium, 0.25-1% for Rosmarinus officinalis and from 0.5-1% for Cananga odorata. An important antibacterial activity was shown against the two bacteria tested with MICs ranging from 0.125-2%. Conclusion: This study suggested that these essential oils may be used as an alternative of traditional methods used for wood protection.

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