Ammar, H.; M’Rabet, Y.; Hassan, S.; Chahine, M.; de Haro-Marti, M.; Soufan, W.; Andres, S.; López, S.; Hosni, K. Chemodiversity and Antimicrobial Activities of
Eucalyptus
Spp. Essential Oils. Cogent Food & Agriculture 2024, 10, doi:10.1080/23311932.2024.2383318.
Ammar, H.; M’Rabet, Y.; Hassan, S.; Chahine, M.; de Haro-Marti, M.; Soufan, W.; Andres, S.; López, S.; Hosni, K. Chemodiversity and Antimicrobial Activities of
Eucalyptus
Spp. Essential Oils. Cogent Food & Agriculture 2024, 10, doi:10.1080/23311932.2024.2383318.
Ammar, H.; M’Rabet, Y.; Hassan, S.; Chahine, M.; de Haro-Marti, M.; Soufan, W.; Andres, S.; López, S.; Hosni, K. Chemodiversity and Antimicrobial Activities of
Eucalyptus
Spp. Essential Oils. Cogent Food & Agriculture 2024, 10, doi:10.1080/23311932.2024.2383318.
Ammar, H.; M’Rabet, Y.; Hassan, S.; Chahine, M.; de Haro-Marti, M.; Soufan, W.; Andres, S.; López, S.; Hosni, K. Chemodiversity and Antimicrobial Activities of
Eucalyptus
Spp. Essential Oils. Cogent Food & Agriculture 2024, 10, doi:10.1080/23311932.2024.2383318.
Abstract
The leaf essential oils from five Eucalyptus spp.: E. astringens, E. camaldulensis, E. lehmanii, E. leucoxylon and E. sideroxylon growing in the same plantation area and conditions (plants with the same age and subjected to the same agronomic practices) were analyzed and evaluated for their antimicrobial activity. The essential oil yields ranged from 0.14 to 0.96% (w/w), and their chromatographic profiles were resolved into 48 compounds; among them, 11 were common to all essential oils. Terpenoids (oxygenated mono, and sesquiterpenes) dominated (55.66-76.67%) the oil profiles. Although 1,8-cineole (21.97-50.93%) was found as the main oxygenated monoterpene in all examined essential oils, principal component analysis observed and confirmed an interspecific chemical variability. Additionally, a set of distinctive chemical markers that could serve as a reliable tool for discrimination of Eucalyptus species and for authentication and quality control purposes (for commercial samples) has been defined for each essential oil. The antimicrobial disc-diffusion assay results revealed that all essential oils were endowed with a strong antimicrobial activity, with those derived from E. camaldulensis, E. lehmanii and E. leucoxylon being the most active.
Keywords
Eucalyptus spp.; Essential oil; Chemical polymorphism; Distinctive chemical markers; Antimicrobials
Subject
Chemistry and Materials Science, Medicinal Chemistry
Copyright:
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