The recent multiplication of food scandals has made food safety a major concern for food producers. More than ever, consumers are asking for products that are microbiologically safe and, in the same time, containing less artificial preservatives. The use of small concentrations of essential oils could bring a solution to this dilemma, as some of those “natural additives” already have proven bacteriostatic properties. Essential oils also beneficiate from a very good image, thanks to their numerous properties (antioxidant, antiviral, anti-inflammatory) and the fact they have been used by humans for thousands of years.
Evaluation of the bacteriostatic properties of essential oils and their potential applications for food microbiology
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The effectiveness of plant essential oils on the in vitro growth of postharvest phytopathogenic fungi
Plant extracts, such as essential oils (Eos), which have long been used in traditional preparations, are currently adopted by the industrial manufactures for modern formulations of consumer products. They are found in perfumery and cosmetology as well as in food and pharmaceutical industries. In agriculture, it was reported that Eos could be an interesting alternative to chemical fungicides and could be used as biofungicides in postharvest biological control. The present work was therefore undertaken to study the effect of thirty species of EOs on the in vitro growth of Penicillium italicum, Penicillium digitatum infecting citrus and Colletotrichum musea infecting bananas. Télécharger le poster
Genotoxicity of some essential oils frequently used in aromatherapy
Genotoxic properties of the essential oils extracted from Artemisia dracunculus (tarragon), Ocimum basilicum (basil), Cinnamomum loureirii (cinnamon), Laurus nobilis (laurel), Satureja montana (savory) and Rosmarinus officinallis (rosemary) are studied by Drosophila melanogaster Somatic Mutation and Recombination Test (SMART). The high bioactivation crossed with a high cytochrome P450-dependent bioactivation capacity is used. This assay is principally based on the loss of heterozygosity of the suitable recessive markers’ multiple wing hairs (mwh) and flare-3 (flr3) which can lead to the formation of mutant clones of larval cells, and which are then going to be expressed as spots on the wings of adult flies. Third-instar larvae are treated for 48 hr with different concentrations of the essential oils dissolved in Tween-80 at 0.2% or 2%. The wings of the emerging adults are analyzed for the occurrence of different types of mutant spots. No statistically significant differences in spot frequencies between negative controls and treated series are observed. These results suggest that the six essential oils at concentrations tested are not genotoxic towards somatic cells of D. melanogaster. Télécharger l'étude complète
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Chemotypische Essentiële Oliën
Biologisch. Puur. Volledig.
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