Chemical Composition, Antioxidant and Antimicrobial Activities of Eucalyptus Cinerea Essential Oil with Its Insecticidal Effect Against Ceratitis Capitata Adults.

Autor: Sadraoui Ajmi, Insaf, Sadraoui, Raoudha, Guesmi, Fatma, Soltani, Abir, Amari, Ramzi, Chaib, Samira, Boushih, Emna, Fajraoui, Abdallah, Mediouni Ben Jemâa, Jouda
Zdroj: International Journal of Environmental Research; Aug2023, Vol. 17 Issue 4, p1-11, 11p
Abstrakt: This work was designed to explore the chemical composition, antioxidant, antibacterial and insecticidal activities of Eucalyptus cinerea essential oil collected from Ain Draham, North-Western of Tunisia. GC/MS analysis revealed the identification of twenty two compounds with 1,8-cineole (63.51%), camphene (15.53%), α-pinene (7.55%) and α-terpineol (3.52%) as major components. The antioxidant potential was assessed using two methods 1.1-diphenyl-2-picrylhydrazyl radical (DPPH) and Ferric Reducing Antioxidant Power (FRAP). IC50 value was 161.59 µg/mL in the DPPH assay. Moreover, the antibacterial acitivity was evaluated towards Gram positive and Gram negative bacteria (Escherichia coli ATCC25922, Staphylococcus aureus ATCC29213, Enterococcus faecalis ATCC29212). The diameter of inhibition varied between 22 ± 0.57 mm and 7 ± 0.5 mm. The largest one was found in Staphylococcus aureus. However, the smallest one was found in Enterococcus feacalis. The insecticidal potential was established against Ceratitis capitata adults using contact toxicity by topical application. Results revealed that all E. cinerea oil concentrations exhibited strong contact properties. The originality of this research is to offer farmers an innovative solution to control C. capitata based on the application of natural insecticidal molecules extracted from Eucalyptus cinerea. Moreover, this oil deserves better considerations due to its antioxidant and antibacterial properties.Highlights: Eucalyptuscinerea essential oil extracted with Clevenger apparatus are analyzed by GC and GC/MS. E. cinerea essential oil has a radical scavenging and antibacterial activities. E. cinerea essential oil displayed insecticidal potential against Medfly adults. [ABSTRACT FROM AUTHOR]
Databáze: Supplemental Index
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