Article (Scientific journals)
Chemical composition and antioxidant activity of Thymus fontanesii essential oil from Algeria
Sidali, Lamia; Brada, Moussa; Fauconnier, Marie-Laure et al.
2020In Natural Products Journal, 10 (3), p. 193-199
Peer reviewed
 

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Keywords :
Thymus fontanesii; electromagnetic induction heating; hydrodistillation; essential oil; chemical composition; antioxidant activity
Abstract :
[en] Background: Thymus fontanesii is one of the importance Algerian plant, used traditionally to treat the cough and cold. In addition, it may help to protect the people against lipid peroxidation and oxidative stress and can be used as an antioxidant agent for the preservation of processed food. Objective: The aim of this study was to determine the chemical composition of Algerian Thymus fontanesii essential oil and to test its antioxidant activity. Method: The oil was extracted by electromagnetic induction (EMI) heating assisted extraction and by hydrodistillation, and was analysed by gas chromatography with flame ionization detector (GC/FID) and gas chromatography/mass spectrometry (GC/MS). The antioxidant activity was evaluated by three assays mainly: DPPH assay, reducing power and β-carotene/linoleic acid. Results: The yield of the essential oil was varied from 2.1 ± 0.3 to 3.1 ± 0.1% (w/w), and from 1.8 ± 0.01 to 2.6 ± 0.02% (w/w), for the electromagnetic induction heating assisted extraction and hydrodistillation, respectively. Twenty seven components were identified representing 95.6 - 99.9% of the oil. Carvacrol (54.7 ± 1.2 - 63.9 ± 1.9%) was the major compound followed by p-cymene (9.2 ± 1.2 - 17.5 ± 1.2%) and γ-terpinene (8.8 ± 0.9 - 14.9 ± 0.8%). The Thymus fontanesii essential oil was found as a significant antioxidant with IC50 values were ranging from 57.3 ± 1.4 to 236.7 ± 1.4 µg/mL, which were higher than that of butylated hydroxyl toluene (BHT) choosing as reference (9.1 ± 1.2 to 67.8 ± 0.1 µg/mL).
Disciplines :
Food science
Phytobiology (plant sciences, forestry, mycology...)
Author, co-author :
Sidali, Lamia;  University of Khemis-Miliana > Valuation of Natural Substances Laboratory
Brada, Moussa;  University of Khemis-Miliana > Valuation of Natural Substances Laboratory
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Lognay, Georges ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Language :
English
Title :
Chemical composition and antioxidant activity of Thymus fontanesii essential oil from Algeria
Publication date :
2020
Journal title :
Natural Products Journal
ISSN :
2210-3155
eISSN :
2210-3163
Publisher :
Bentham Science, Shariah, United Arab Emirates
Volume :
10
Issue :
3
Pages :
193-199
Peer reviewed :
Peer reviewed
Available on ORBi :
since 26 April 2018

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