Chemical composition antimicrobial and antioxidant activities of Thymus fontanesii Boiss. et Reut. and Origanum glandulosum Desf. essential oils


Citation

Souagui S., . and Boudries H., . and Madani K., . and Nabet N., . and Loupassaki S., . and Carbonell-Barrachina �. A., . Chemical composition antimicrobial and antioxidant activities of Thymus fontanesii Boiss. et Reut. and Origanum glandulosum Desf. essential oils. pp. 2518-2525. ISSN 0116-6514

Abstract

The chemical composition and antioxidant and antimicrobial activities of the essential oil (EO) of two lamiaceae (Origanum glandulosum Desf. and Thyms fontanesii Boiss. et Reut.) have been investigated. The essential oils were isolated with hydrodistillation method using Clevenger-type apparatus and characterized by GC and GC/MS method. The major compounds of T. fontanesii and O. glandulosum oils were carvacrol (67.5-12.9) and -terpinene (13.0- 29.4) respectively. The antimicrobial activity of these EOs has been studied against 6 strains using disc diffusion method and microdilution plate method. The results revealed that all the oils exhibited a strong antimicrobial activity against the germs with inhibition zone diameters varied from 29.61 to 48.56 mm and minimal inhibition concentration (MIC) of 0.11 L/mL for all the strains tested. Antioxidant properties were tested by means of DPPH assay and - carotene bleaching tests. EO of T. fontanesii had the highest scavenging effect against DPPH free radical and the strongest anti-bleaching activity with IC50 values of 51.56 0.25 mg/mL and 1.48 0.02 mg/mL respectively. The essential oils studied shows strong antimicrobial activity and can be considered as potential source of antioxidant.


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Abstract

The chemical composition and antioxidant and antimicrobial activities of the essential oil (EO) of two lamiaceae (Origanum glandulosum Desf. and Thyms fontanesii Boiss. et Reut.) have been investigated. The essential oils were isolated with hydrodistillation method using Clevenger-type apparatus and characterized by GC and GC/MS method. The major compounds of T. fontanesii and O. glandulosum oils were carvacrol (67.5-12.9) and -terpinene (13.0- 29.4) respectively. The antimicrobial activity of these EOs has been studied against 6 strains using disc diffusion method and microdilution plate method. The results revealed that all the oils exhibited a strong antimicrobial activity against the germs with inhibition zone diameters varied from 29.61 to 48.56 mm and minimal inhibition concentration (MIC) of 0.11 L/mL for all the strains tested. Antioxidant properties were tested by means of DPPH assay and - carotene bleaching tests. EO of T. fontanesii had the highest scavenging effect against DPPH free radical and the strongest anti-bleaching activity with IC50 values of 51.56 0.25 mg/mL and 1.48 0.02 mg/mL respectively. The essential oils studied shows strong antimicrobial activity and can be considered as potential source of antioxidant.

Additional Metadata

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Item Type: Article
AGROVOC Term: Origanum
AGROVOC Term: Lamiaceae
AGROVOC Term: Medicinal plants
AGROVOC Term: Essential oils
AGROVOC Term: Food preservation
AGROVOC Term: Chemical composition
AGROVOC Term: antimicrobial agents
AGROVOC Term: Antioxidants
AGROVOC Term: Air drying
AGROVOC Term: Extraction
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:28
URI: http://webagris.upm.edu.my/id/eprint/23915

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