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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DOORGAAN MET LEZEN

Antibacterial and cytotoxic activities of ten commercially available essential oils

There is a hugef concern in the medical field concerning the emergence of bacterial resistance to antibiotics. Essential oils are a source of antibacterial compounds that can overcome this problem. Ten essential oils that are commercially available were investigated in the present study: ajowan, basil, German chamomile, Chinese cinnamon, coriander, clove, lemongrass, Spanish lavender, oregano and palmarosa. Their direct, synergistic and indirect antibacterial activities were evaluated against different human pathogenic Gram-positive and Gram-negative strains. To evaluate their possible use in clinics, the cytotoxicity of these essential oils was also tested on keratinocyte and epithelial cell lines. Except for the Chinese cinnamon, coriander and lemongrass, all other essential oils presented no cytotoxicity at 32 and 16 µg/mL. Télécharger l'étude complète

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