Chemical Composition and Antimicrobial Activity of Artemisia herba-alba and Origanum majorana Essential Oils from Morocco

Essential oils (EOs) are one of the most important groups of plant metabolites responsible for their biological activities. This study was carried out to study the chemical composition and the antimicrobial effects of Artemisia herba-alba and Origanum majorana essential oils against some Gram-positi...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2019-11, Vol.24 (22), p.4021
Main Authors: Amor, Ghita, Caputo, Lucia, La Storia, Antonietta, De Feo, Vincenzo, Mauriello, Gianluigi, Fechtali, Taoufiq
Format: Article
Language:English
Subjects:
Alcohol
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Anti-Infective Agents - chemistry
Anti-Infective Agents - pharmacology
Antibacterial agents
Antibiotics
Antifungal Agents - chemistry
Antifungal Agents - pharmacology
Antiinfectives and antibacterials
Antimicrobial activity
Antimicrobial agents
Antioxidants
Artemisia - chemistry
Artemisia herba-alba
Bacteria
chemical characterization
Chemical composition
Composition effects
Drug dosages
E coli
Essential oils
Gram-negative bacteria
Gram-positive bacteria
Listeria
Metabolites
Microbial Sensitivity Tests
Microorganisms
Morocco
Oils & fats
Oils, Volatile - chemistry
Oils, Volatile - pharmacology
Origanum - chemistry
Origanum majorana
Phytochemicals - chemistry
Salmonella
Spectrum Analysis
Terpinene
Thujone
Vanillyl alcohol
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Summary:Essential oils (EOs) are one of the most important groups of plant metabolites responsible for their biological activities. This study was carried out to study the chemical composition and the antimicrobial effects of Artemisia herba-alba and Origanum majorana essential oils against some Gram-positive and Gram-negative bacteria, and a fungal strain isolated from spoiled butter. The plants were collected in the region Azzemour of South West Morocco and the EOs, extracted by hydrodistillation, were analyzed by GC-MS. The antimicrobial activity was determined using the agar paper disc method. The main components of A. herba-alba EO were cis-thujone, trans-thujone and vanillyl alcohol; in O. majorana EO terpinen-4-ol, isopulegol and β-phellandrene predominated. Both essential oils exhibited growth inhibiting activities in a concentration-dependent manner on several microorganism species. Our results demonstrated that O. majorana and A. herba-alba EOs could be effective natural antibacterial agents in foods.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules24224021