Wild Thymus zygis L. ssp. gracilis and Eucalyptus camaldulensis Dehnh.: Chemical composition, antioxidant and antibacterial activities of essential oils-Reference-Cited by-同舟云学术

Wild Thymus zygis L. ssp. gracilis and Eucalyptus camaldulensis Dehnh.: Chemical composition, antioxidant and antibacterial activities of essential oils

Published:2024-01-01 Issue:1 Volume:22 Page:
ISSN:2391-5420
Container-title:Open Chemistry
language:en
Short-container-title:

Author:

Aabouch Farah¹²,Satrani Badr¹,Ameggouz Mouna¹³,Ettaleb Ismail⁴,Assouguem Amine⁵,Kara Mohammed⁶,Ullah Riaz⁷,Bari Ahmed⁸,Kaur Sawinder⁹,Ghanmi Mohamed¹⁰,Farah Abdellah¹¹,Ouajdi Mohamed¹,Annemer Saoussan¹¹,Dahmani Jamila²

Affiliation:

1. Laboratory of Microbiology and Chemistry of Aromatic and Medicinal Plants, Forest Research Center , BP 763 , Agdal , Rabat , Morocco

2. Plant, Animal Productions and Agro-industry Laboratory, Faculty of Science, Ibn-Tofail University , BP 133 , Kenitra , 14000 , Morocco

3. Laboratory of Analytical Chemistry and Bromatology, Faculty of Medicine and Pharmacy, Mohammed V University in Rabat , Rabat , Morocco

4. Botany, Mycology and Environment Laboratory, Department of Biology, Faculty of Sciences, Mohammed V University , Rabat 10050 , Morocco

5. Laboratory of Functional Ecology and Environment, Faculty of Sciences and Technology, Sidi Mohamed Ben Abdellah University , PO. box 2202 Imouzzer Street , Fez , 30000 , Morocco

6. Laboratory of Biotechnology, Conservation and Valorisation of Natural Resources (LBCVNR), Faculty of Sciences Dhar El Mahraz, Sidi Mohamed Ben Abdallah University , BP 1796 Atlas , Fez, 30000 , Morocco

7. Department of Pharmacognosy, College of Pharmacy, King Saud University , Riyadh , Saudi Arabia

8. Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University , Riyadh , Saudi Arabia

9. Department of Food Technology and Nutrition, Lovely Professional University , Phagwara , Punjab , India

10. National Office for Agricultural Consultation , Rabat , Morocco

11. Laboratory of Applied Organic Chemistry, Faculty of Sciences and Techniques, University Sidi Mohammed Ben Abdellah, B.P. 2202 , Fes 30000 , Morocco

Abstract

Abstract Natural substances extracted from plants have been increasingly studied and recognized, recently. Essential oils (EOs), for example, possess antioxidant and antibacterial properties, enabling their application across different sectors like agro-food, pharmaceuticals, and cosmetics. In Morocco, exceptional plant diversity, mirroring the diversity of ecosystems, has not yet revealed all its secrets. Therefore, the aim of this study is to determine the chemical composition and evaluate the antibacterial and antioxidant activities of EOs from Thymus zygis L. ssp. gracilis and Eucalyptus camaldulensis Dehnh. collected in the El Hoceima and Mamora regions, respectively. The EOs were extracted by hydrodistillation employing a Clevenger-type apparatus. Gas chromatography/mass spectrometry (GC/MS) analyses identified 54 constituents representing 92.65% of the total for T. zygis and 55 components representing 99.60% for E. camaldulensis. The primary components found in the EO of T. zygis are δ-terpineol (27.64%), followed by δ-3-carene (15.7%), thymol (14.17%), and dehydrolinalool (4.99%). The main compounds in E. camaldulensis EO are 1,8-cineole (43.61%), γ-terpinene (11.71%), α-terpineol (10.58%), and p-cymene (4.93%). The antioxidant properties of these oils were investigated by utilization of the 2,2-diphenyl-1-picrylhydrazyl method and the ferric reducing antioxidant power (FRAP) test. The antibacterial activity was assessed against two Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis) and two Gram-negative bacteria (Micrococcus luteus and Escherichia coli). Both EOs showed significant antioxidant activity but were less effective than reference antioxidants quercetin and catechin. Antibacterial studies demonstrated strong activity of T. zygis and E. camaldulensis EOs against the studied bacteria, as well as good inhibitory properties (minimum inhibitory concentration).

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/chem-2024-0050/pdf

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