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Effect of essential oils on the in vitro growth of penicillium digitatum and penicillium italicum infecting citrus and colletotrichum musea infecting banana

Effect of essential oils on the in vitro growth of penicillium digitatum and penicillium italicum infecting citrus and colletotrichum musea infecting banana

Citrus and bananas represent the two economically important fruit crops worldwide. The most important causes of post-harvest losses of these fruits are blue mold caused by Penicillium italicum and green mold caused by Penicillium digitatum for citrus, and anthracnose disease caused by Colletotrichum musea for bananas. To cope with these diseases, treatment with chemical fungicides during the conditioning process has long been used.

Nowadays, such a treatment is challenged because of the following reasons:

  • High level of chemical fungicide residues in food products
  • Chemical fungicides toxicity and risk for human health and for the environment,
  • Development of pathogens populations resistant to chemical fungicides,
  • Restriction or ban on use of a number of chemical fungicides by the legislation.

This has motivated the search for alternative approaches. Essential Oils (EOs) extracted from aromatic plants are known for their antifungal effects and could thus be used against plant pests. The present work was therefore undertaken to study the effect of ten Eos on the in vitro growth of P. italicum, P.digitatum and C. musea.

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The impact of oregano (origanum heracleoticum) essential oil and carvacrol on virulence gene transcription by escherichia coli O157:H7

Enterohaemorrhagic Escherichia coli (EHEC) serotype O157:H7was first recognized as a food pathogen in 1982 (Paton and Paton 1998). Since then, this organism has been implicated in sporadic cases and outbreaks of enterohaemorrhagic diarrhea worldwide (EFSA and ECDC 2013; Crim et al., 2014). EHEC O157:H7 is a member of the attaching and effacing (A/E) E. coli group. It possesses virulence factors essential for adhesion of the pathogen to intestinal epithelial cells (attachment) and is responsible for the destruction of the brush border ofmicrovilli (effacement) (Paton and Paton 1998). Télécharger l'étude complète

Action anticancérigène de l'Huile Essentielle d'Origanum Compactum : application sur la lignée cancéreuse humaine du nasopharynx "Hep"

L'Origan -Origanum compactum- est une plante médicinale couramment utilisée pour certains traitements thérapeutiques notamment des affections gastriques et cutanées; elle montre aussi un intérêt majeur en tant que produit aromathérapeutique. Dans ce sens; nous nous sommes intéressés à l'évaluation de ses actions antigénotoxique et anticarcinogène contre certains agents mutagènes de référence comme l'éthyle carbamate (Uréthane). Nos résultats montrent un taux d'inhibition des clones allant de 59% jusqu'à 63% pour certaines fractions de l'Origanum compactum chémotype marocain étudiées par test de mutations et de recombinaisons somatiques (SMART) au niveau des ailes de Drosophila melanogaster. Télécharger le résumé