6533b86ffe1ef96bd12ce899

RESEARCH PRODUCT

CommercialOriganum compactumBenth. andCinnamomum zeylanicumBlume essential oils against natural mycoflora in Valencia rice

M. Pilar SantamarinaJosefa RosellóF. SempereM. Amparo BlázquezSilvia Giménez

subject

FusariumAntifungal AgentsCinnamomum zeylanicumCyclohexane MonoterpenesMicrobial Sensitivity TestsPlant ScienceBiochemistryGas Chromatography-Mass SpectrometryAnalytical Chemistrylaw.inventionchemistry.chemical_compoundAscomycotaFusariumlawOriganumEugenolBotanyOils VolatilePlant OilsCarvacrolFood scienceThymolEssential oilMyceliumbiologyOrganic ChemistryAlternariafood and beveragesOryzabiology.organism_classificationCinnamomum zeylanicumEugenolchemistryCinnamatesMonoterpenesCymenesGas chromatography

description

Chemical composition of commercial Origanum compactum and Cinnamomum zeylanicum essential oils and the antifungal activity against pathogenic fungi isolated from Mediterranean rice grains have been investigated. Sixty-one compounds accounting for more than 99.5% of the total essential oil were identified by using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS). Carvacrol (43.26%), thymol (21.64%) and their biogenetic precursors p-cymene (13.95%) and γ-terpinene (11.28%) were the main compounds in oregano essential oil, while the phenylpropanoids, eugenol (62.75%), eugenol acetate (16.36%) and (E)-cinnamyl acetate (6.65%) were found in cinnamon essential oil. Both essential oils at 300 μg/mL showed antifungal activity against all tested strains. O. compactum essential oil showed the best antifungal activity towards Fusarium species and Bipolaris oryzae with a total inhibition of the mycelial growth. In inoculated rice grains at lower doses (100 and 200 μg/mL) significantly reduced the fungal infection, so O. compactum essential oil could be used as ecofriendly preservative for field and stored Valencia rice.

yearjournalcountryeditionlanguage
2015-01-23Natural Product Research
https://doi.org/10.1080/14786419.2014.1002406