Title:Essential Oils and Alcohol Extracts of Northwest Tunisia M. communis
and M. spicata: Phytocompounds, Antioxidant and Antibacterial Activities
Volume: 18
Issue: 4
Author(s): Saida Medjeldi*, Nora Benrachou, Sabrina Bouchelaghem, Sélim Jallouli, Nadia Farès and Salem Elkahoui
Affiliation:
- Department of Biology, Faculty of Life and Natural Sciences, University of Chadli Bendjedid, BP 73, El-Tarf, 36000,
Algeria
- Bioactive Substances Laboratory, Biotechnology Center of Borj Cedria, BP 901, Hammam Lif, 2050, Tunisia
Keywords:
Myrtus communis, Mentha spicata, Phenols, Antibacterial, Antioxidant activities, Essential oils, GC-MS.
Abstract:
Background and Objective: Nowadays, the conventional chemical compounds used in
the food, pharmaceutical, and cosmetic sectors have proven to be less efficient from an economic
and health point of view. Research has therefore focused on the isolation of bioactive molecules
from plants or microorganisms .
Methods: The study focused on the leaf’s volatile compounds determination from Myrtus communis
(McEOs) and Mentha spicata (MsEOs) as well as the evaluation of phytochemical fractions
and biological activities from their methanol extracts (McME and MsME).
Results: Phenolic compounds analysis revealed interesting concentrations of total phenols,
flavonoids, and condensed tannins. The antibacterial activity tested on seven pathogenic bacteria
has to be effectuated by the gel diffusion method. The extracts showed much better DPPH radical
scavenging activity than the volatile compounds. The McEOs and MsEOs profiles analyzed by
CG-MS showed a mixture of several compounds with a predominance of 1,8-Cineole (48.1%) and
α-pinene (39.02%) in the case of McEOs. In the case of MsEOs, the predominant compounds were
D-Carvone (78.79%), dihydrocarvone (6.16%), and 1.8 Cineole (2.33%).
Conclusion: It emerges from this study that the M. communis and M. spicata leaves, rich in phenolic
and terpenic compounds, constitute a promising source of diversified biological activities and
can be used in agro-food, cosmetic, and pharmaceutical sectors.