| Autor: |
Heffaf, Fatiha, Douar-Latreche, Sabrina, Kerbouche, Lamia, Hazzit, Mohamed, Mouhouche, Fazia |
| Zdroj: |
Journal of Essential Oil Bearing Plants; January 2023, Vol. 26 Issue: 1 p61-78, 18p |
| Abstrakt: |
AbstractThis study was designed to determine the chemical composition, antioxidant, antimicrobial and insecticidal activities of essential oils of Thymus guyoniiand Thymus algeriensis. The essential oils (EOs) were isolated by hydrodistillation and analyzed by GC and GC-MS. The leading components of the oils were p-cymene (15.8%), γ-terpinene (15.3%), thymol methyl ether (15.7%) and thymol (19.1%) for T. guyoniiand α-pinene (4.4%), camphor (4.6%), bornyl acetate (5.4%) and terpinenyl actate (28.1%) for T. algeriensis. The antioxidant activity was evaluated in terms of scavenging of free radicals DPPH●and ABTS●+. The essential oil of T. guyoniiwas the most efficient in inhibiting free radicals but less active compared to synthetic antioxidants (Trolox and BHT). Also, T. guyoniiessential oil showed the highest effectiveness against the rice weevil, Sitophilus oryzaeL. (Coleoptera: Curculionidae) as well as against five microorganisms, two gram-positive (Staphylococcus aureusand Bacillus subtilis), one gram-negative (Escherichia coli), one yeast (Candida albicans) and one fungus (Aspergillus brasiliensis). The results suggest that the EO of T. guyoniicould be considered in pharmaceutical and food fields as well as for preservation of stored products from S. oryzaedamage. |
| Databáze: |
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