Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Chemical Composition and Antifungal Activity of Cyperus articulatus, Cyperus rotundus and Lippia alba Essential Oils against Aspergillus flavus Isolated from Peanut Seeds in Senegal

Safietou Sabaly
,
Yoro Tine
* ,
Alioune Diallo
,
Abdoulaye Faye
,
Mouhamed Cisse
,
Abdoulaye Ndiaye
,
Cebastiana Sambou
,
Cheikhouna Gaye
,
Alassane Wele
,
Julien Paolini
,
Jean Costa
,
Aboubacry Kane
,
Saliou Ngom
*
Version 1 : Received: 18 October 2023 / Approved: 18 October 2023 / Online: 19 October 2023 (10:07:11 CEST)

How to cite: Sabaly, S.; Tine, Y.; Diallo, A.; Faye, A.; Cisse, M.; Ndiaye, A.; Sambou, C.; Gaye, C.; Wele, A.; Paolini, J.; Costa, J.; Kane, A.; Ngom, S. Chemical Composition and Antifungal Activity of Cyperus articulatus, Cyperus rotundus and Lippia alba Essential Oils against Aspergillus flavus Isolated from Peanut Seeds in Senegal. Preprints 2023, 2023101256. https://doi.org/10.20944/preprints202310.1256.v1 Sabaly, S.; Tine, Y.; Diallo, A.; Faye, A.; Cisse, M.; Ndiaye, A.; Sambou, C.; Gaye, C.; Wele, A.; Paolini, J.; Costa, J.; Kane, A.; Ngom, S. Chemical Composition and Antifungal Activity of Cyperus articulatus, Cyperus rotundus and Lippia alba Essential Oils against Aspergillus flavus Isolated from Peanut Seeds in Senegal. Preprints 2023, 2023101256. https://doi.org/10.20944/preprints202310.1256.v1

Abstract

Aspergillus flavus is a pathogenic fungus that affects and contaminates several foodstuffs and is associated with cancer in humans. In Senegal, significant losses of groundnut production are mainly due to contamination caused by this species. This study evaluated in vitro antifungal activities of Cyperus articulatus, Cyperus rotundus and Lippia alba essential oils against A. flavus isolated from peanut seeds. Essential oils obtained by hydrodistillation of rhizomes of the two Cyperus species and leaves of L. alba were analyzed by GC-DIF and GC-MS. The essential oil yields from C. articulatus, C. rotundus and L. alba were 1.1%, 1.3% and 1.7%, respectively. These three samples had the following chemotypes: (i) Mustakone (21.4%)/eudesma-4(15)-7-dien-1β-ol (8.8%)/caryophyllene oxide (5.9%), (ii) caryophyllene oxide (25.2%)/ humulene epoxyde 2 (35.0%) and (iii) geranial (46.6%)/neral (34.6%). The three oils tested inhibited the growth of A. flavus at concentrations between 100 and 1000 ppm. The L. alba oil was the most effective with total clearance of A. flavus on PDA. For the essential oils of C. rotundus (93.65%) and C. articulatus (78.11%), the highest inhibition rates were obtained with 1000 ppm dose. Thus, the L. alba oil could be used safely as an effective protector of groundnuts against A. flavus.

Keywords

essential oils; Aspergillus flavus; antifungal activity; aflatoxin; peanuts; GC/MS

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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