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Research Article


Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa

Juma Al-mutaani, Tahani Zorgui, Abdalla A. Mohamed, Iryna Smetanska, Lazhar Zourgui, Nabiha Missaoui.


Abstract
Background:
Recent studies have linked various types of cancers to free radicals, driving research into plant-derived compounds that mitigate oxidative damage.

Aim:
This study assesses the antioxidant potential of ethanolic (EE) and water extracts (WE) from four Omani plant species, including Ocimum basilicum, Teucrium polium, Cleome amblyocarpa, and Caralluma Arabica.

Methods:
Antioxidant activity was evaluated using five assays: DPPH free radical-scavenging, nitric oxide (NO) radical scavenging, ferric reducing antioxidant power (FRAP), Trolox equivalent antioxidant capacity (TEAC), and total antioxidant capacity (TAC). Ascorbic acid and Trolox were used as reference antioxidants.

Results:
Both extracts exhibited dose-dependent DPPH scavenging, with Ocimum basilicum EE showing the highest activity (IC50 = 0.25 ± 0.022 mg/mL). Ocimum basilicum EE also displayed also the strongest NO scavenging (IC50 = 0.02 ± 0.002 mg/mL), surpassing ascorbic acid. In the FRAP assay, WE demonstrated superior reducing power (p = 0.01), with Cleome amblyocarpa WE exhibiting the highest activity (7.42 ± 0.015 mg/mL). TEAC and TAC assays revealed species- and solvent-dependent variations, with EE generally showing greater antioxidant activity, except for Cleome amblyocarpa WE, which had a significantly higher TAC (p < 0.001). Two-way ANOVA identified plant species as the primary determinant of antioxidant potential (p < 0.0001).

Conclusion:
These findings underscore the strong antioxidant properties of selected Omani plants, particularly Ocimum basilicum and Caralluma arabica, highlighting their potential for therapeutic and nutraceutical applications.

Key words: Antioxidant activity; DPPH free radical scavenging; Ethanolic extract; Oman; Water extract.


 
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How to Cite this Article
Pubmed Style

Al-mutaani J, Zorgui T, Mohamed AA, Smetanska I, Zourgui L, Missaoui N. Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. Open Vet. J.. 2025; 15(9): 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71

Web Style

Al-mutaani J, Zorgui T, Mohamed AA, Smetanska I, Zourgui L, Missaoui N. Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. https://www.openveterinaryjournal.com/?mno=250875 [Access: October 06, 2025]. doi:10.5455/OVJ.2025.v15.i9.71

AMA (American Medical Association) Style

Al-mutaani J, Zorgui T, Mohamed AA, Smetanska I, Zourgui L, Missaoui N. Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. Open Vet. J.. 2025; 15(9): 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71


Vancouver/ICMJE Style

Al-mutaani J, Zorgui T, Mohamed AA, Smetanska I, Zourgui L, Missaoui N. Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. Open Vet. J.. (2025), [cited October 06, 2025]; 15(9): 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71


Harvard Style

Al-mutaani, J., Zorgui, . T., Mohamed, . A. A., Smetanska, . I., Zourgui, . L. & Missaoui, . N. (2025) Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. Open Vet. J., 15 (9), 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71


Turabian Style

Al-mutaani, Juma, Tahani Zorgui, Abdalla A. Mohamed, Iryna Smetanska, Lazhar Zourgui, and Nabiha Missaoui. 2025. Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. Open Veterinary Journal, 15 (9), 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71


Chicago Style

Al-mutaani, Juma, Tahani Zorgui, Abdalla A. Mohamed, Iryna Smetanska, Lazhar Zourgui, and Nabiha Missaoui. "Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa." Open Veterinary Journal 15 (2025), 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71


MLA (The Modern Language Association) Style

Al-mutaani, Juma, Tahani Zorgui, Abdalla A. Mohamed, Iryna Smetanska, Lazhar Zourgui, and Nabiha Missaoui. "Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa." Open Veterinary Journal 15.9 (2025), 4671-4680. Print. doi:10.5455/OVJ.2025.v15.i9.71


APA (American Psychological Association) Style

Al-mutaani, J., Zorgui, . T., Mohamed, . A. A., Smetanska, . I., Zourgui, . L. & Missaoui, . N. (2025) Comparative antioxidant activity of four Omani medicinal plants: Ocimum basilicum, Teucrium polium, Caralluma arabica, and Cleome amblyocarpa. Open Veterinary Journal, 15 (9), 4671-4680. doi:10.5455/OVJ.2025.v15.i9.71


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