Article (Scientific journals)
Chemical composition, angiotensin I-converting enzyme inhibitory, antioxidant and antimicrobial activities of essential oil of Tunisian Thymus algeriensis Boiss. et Reut. (Lamiaceae)
Zouari, Nacim; Fakhfakh, Nahed; Zouari, Sami et al.
2011In Food and Bioproducts Processing, 89 (4), p. 257 - 265
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Keywords :
Angiotensin I-converting enzyme; Antimicrobial activity; Antioxidant activity; Chemical composition; Essential oil; Thymus algeriensis
Abstract :
[en] The present study describes chemical composition, angiotensin I-converting enzyme (ACE) inhibitory, antioxidant and antimicrobial activities of the essential oil of wild growing Thymus algeriensis Boiss. et Reut. (Lamiaceae), a traditional medicinal plant which is mainly endemic in Tunisia and Algeria. The essential oil from the fresh leaves and flowers of T. algeriensis were extracted by hydrodistillation and analysed by GC and GC/MS. Fifty-seven compounds were identified accounting for 97.71% of the total oil, where oxygenated monoterpenes constituted the main chemical class (44.85%). The oil was dominated by camphor (7.82%), 4-terpineol (7.36%), α-pinene (6.75%), 1,8-cineole (5.54%) and cis-sabinene hydrate (5.29%). The T. algeriensis essential oil was found to possess an interesting inhibitory activity towards ACE with an IC50 value of 150 μg/ml. The obtained results also showed that this oil can act as radical scavengers (IC50 = 0.8 mg/ml) and displayed a lipid peroxidation inhibitory activity (IC50 = 0.5 mg/ml) as evaluated by 2,2-diphenyl-1-picrylhydrazyl and β-carotene bleaching methods, respectively. Furthermore, the oil was tested for antimicrobial activity against six bacterial strains and two fungal strains. The inhibition zones and minimal inhibitory concentration values of microbial strains were in the range of 13.5-64 mm and 1-6 μl/ml, respectively. The oil exhibited remarkable inhibitory activity against fungal and Gram-positive bacteria strains. © 2010 The Institution of Chemical Engineers.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Zouari, Nacim;  Laboratoire de Biochimie et de Génie Enzymatique des Lipases, Ecole Nationale d'Ingénieurs de Sfax (ENIS), 3038 Sfax, Tunisia ; Institut Supérieur de Biologie Appliquée de Médenine, 4119 Médenine, Tunisia
Fakhfakh, Nahed;  Laboratoire de Génie Enzymatique et de Microbiologie, ENIS, 3038 Sfax, Tunisia
Zouari, Sami;  Laboratoire d'Ecologie Pastorale, Institut des Régions Arides, 4119 Médenine, Tunisia
Bougatef, Ali;  Laboratoire de Génie Enzymatique et de Microbiologie, ENIS, 3038 Sfax, Tunisia
Karray, Aida;  Laboratoire de Biochimie et de Génie Enzymatique des Lipases, Ecole Nationale d'Ingénieurs de Sfax (ENIS), 3038 Sfax, Tunisia
Neffati, Mohamed;  Laboratoire d'Ecologie Pastorale, Institut des Régions Arides, 4119 Médenine, Tunisia
Ayadi, Mohamed  ;  Laboratoire d'Analyse Alimentaire, ENIS, 3038 Sfax, Tunisia
Language :
English
Title :
Chemical composition, angiotensin I-converting enzyme inhibitory, antioxidant and antimicrobial activities of essential oil of Tunisian Thymus algeriensis Boiss. et Reut. (Lamiaceae)
Publication date :
October 2011
Journal title :
Food and Bioproducts Processing
ISSN :
0960-3085
eISSN :
1744-3571
Publisher :
Elsevier
Volume :
89
Issue :
4
Pages :
257 - 265
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 December 2024

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