Antifungal and antiaflatoxinogenic effects of Cymbopogon citratus, Cymbopogon nardus, and Cymbopogon schoenanthus essential oils alone and in combination

Sawadogo Ignace, Paré Adama, Kaboré Donatien, Montet Didier, Durand Noël, Bouajila Jalloul, Zida P. Elisabeth, Sawadogo-Lingani Hagrétou, Nikiéma Phillipe Augustin, Niébé Roger Honorat Charles, Bassolé Imaël Henri Nestor. 2022. Antifungal and antiaflatoxinogenic effects of Cymbopogon citratus, Cymbopogon nardus, and Cymbopogon schoenanthus essential oils alone and in combination. Journal of Fungi, 8 (2), n.spéc. Different Antimycotoxin Strategies:117, 13 p.

Résumé : The antifungal and antiaflatoxinogenic activities of the essential oils (EOs) from the leaves of Cymbopogon schoenanthus, Cymbopogon citratus, Cymbopogon nardus, and their pair combinations were investigated. Antifungal susceptibility and the efficacy of paired combinations of EOs were assessed using agar microdilution and checkerboard methods, respectively. Identification and quantification of chemical components of the EOs were carried out by gas chromatography-mass spectrometry and gas chromatography-flame ionization detector (GC-MS and GC-FID), respectively. Aflatoxins were separated and identified by High-Performance Liquid Chromatography (HPLC) and then quantified by spectrofluorescence. The EO of C. nardus exhibited the highest inhibitory activity against Aspergillus flavus and Aspergillus parasiticus. The combination of C. citratus and C. nardus and that of C. nardus and C. schoenanthus exhibited a synergistic effect against Aspergillus flavus and Aspergillus, respectively. Both C. citratus and C. schoenanthus EOs totally inhibited the synthesis of aflatoxin B1 at 1 µL/mL. C. citratus blocked the production of aflatoxins B2 and G2 at 0.5 µL/mL. Both C. citratus and C. schoenanthus totally hampered the production of the aflatoxin G1 at 0.75 µL/mL. The combination of C. citratus and C. schoenanthus completely inhibited the production of the four aflatoxins. The study shows that the combinations can be used to improve their antifungal and antiaflatoxinogenic activities.

Mots-clés Agrovoc : huile essentielle, Cymbopogon, fongicide, Aspergillus, expérimentation in vitro

Mots-clés géographiques Agrovoc : Burkina Faso

Mots-clés libres : Aspergillus parasiticus, Aspergillus flavus, Essential oils, Combination, Antifungal, Antiafla-toxinogenic effect

Classification Agris : H20 - Maladies des plantes

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations

• Sawadogo Ignace, Université Joseph Ki-Zerbo (BFA)
• Paré Adama, Université Joseph Ki-Zerbo (BFA)
• Kaboré Donatien, IRSAT (BFA)
• Montet Didier, CIRAD-PERSYST-UMR Qualisud (FRA)
• Durand Noël, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0003-1627-6848
• Bouajila Jalloul, Université de Toulouse (FRA)
• Zida P. Elisabeth, INERA (BFA)
• Sawadogo-Lingani Hagrétou, IRSAT (BFA)
• Nikiéma Phillipe Augustin, Université Joseph Ki-Zerbo (BFA)
• Niébé Roger Honorat Charles, IRSAT (BFA)
• Bassolé Imaël Henri Nestor, Université Joseph Ki-Zerbo (BFA) - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/602255/)

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