Publications Internationales
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Item Chemical composition and insecticidal activity of Artemisia absinthium L. essential oil against adults of Tenebrio molitor L.(Elsevier Ltd, 2024) Lakhdari, Wassima; Mounir Bouhenna, Mustapha; Salah Neghmouche, Nacer; Dehliz, Abderrahmene; Benyahia, Ibtissem; Bendif, Hamdi; Garzoli, StefaniaMany researchers and manufacturers around the world have shown interest in essential oils and their components. Artemisia absinthium L., commonly known as wormwood, is a medicinal and aromatic bitter herb frequently used in traditional medicine since ancient times. The objective of this research was to study the chemical composition and evaluate the insecticidal activities of A. absinthium essential oil (AEO) against Tenebrio molitor L., mealworm battle. We explored its effectiveness through several means, including direct contact, fumigation and repulsion of insects. Phytochemical analysis was performed using GC-MS technique. The main components identified in the essential oil were camphor (32.34%), chamazulene (13.92%), and terpinen-4-ol (10.18%). These results highlight that Algerian A. absinthium plants are valuable resources due to their bioactive compounds. In particular, the results obtained in our investigation suggest that the essential oil obtained from A. absinthium has the potential to be used as a natural bioinsecticide.Item Chemical compositions and insectisidal activity of essential oils of three plants Artemisia SP: Artemisia herba-alba, Artemisia absinthium and Artemisia Pontica (Morocco)(Elsevier, 2024) Lakhdari, Wassima; Mounir Bouhenna, Mustapha; Salah Neghmouche, Nacer; Dehliz, Abderrahmene; Benyahia, Ibtissem; Bendif, Hamdi; Garzoli, StefaniaMany researchers and manufacturers around the world have shown interest in essential oils and their components. Artemisia absinthium L., commonly known as wormwood, is a medicinal and aromatic bitter herb frequently used in traditional medicine since ancient times. The objective of this research was to study the chemical composition and evaluate the insecticidal activities of A. absinthium essential oil (AEO) against Tenebrio molitor L., mealworm battle. We explored its effectiveness through several means, including direct contact, fumigation and repulsion of insects. Phytochemical analysis was performed using GC-MS technique. The main components identified in the essential oil were camphor (32.34%), chamazulene (13.92%), and terpinen-4-ol (10.18%). These results highlight that Algerian A. absinthium plants are valuable resources due to their bioactive compounds. In particular, the results obtained in our investigation suggest that the essential oil obtained from A. absinthium has the potential to be used as a natural bioinsecticide.Item Chemical composition and insecticidal activity of Origanum floribundum Munby essential oil endemic plant from Algeria(Malaysian Society for Parasitology, 2022) Mir, Soumia; Bouchenak, O.; Aït Kaci, K.; A.Rouane; Alliliche, M.; Arab, K.Among strategies for decreasing diseases, the use of larvicidal plant extracts against mosquito larvae gain an important place in vector control. The aim of the present study was to reveal the insecticidal effectiveness of an endemic medicinal plant on Mosquito-Borne Diseases. The chemical composition of the dried aerial part from Origanum floribundum Essential oil, obtained by hydrodistillation, was characterized by Fourier-transform infrared (FTIR) spectroscopy and gas chromatography-mass spectrometer (GC-MS) system. The potential larvicidal activity of this extract as bioinsecticide was assessed against Culex pipiens. Results showed many functional groups such as phenols and alcohols, besides, the chemical composition by GC-MS identified thymol (86.9%) and p-Cymene (5.1%) as major components. A significant larvicidal effect against the target mosquito species was noted, with values of LC50 at 21.19 mg/l and LC90 at 68.37 mg/l. The results obtained showed that the essential oil of Origanum floribundum with chemotype thymol possess a potent larvicidal activity and could be considered as an eco-friendly alternative for vector controlItem Phytochemical investigation of new Algerian lichen species : physcia mediterranea nimis(NLM (Medline), 2021) Kerboua, Marwa; Ali Ahmed, Monia; Samba, Nsevolo; Aitfella-Lahlou, Radhia; Silva, Lucia; Boyero, Juan F.; Raposo, Cesar; Lopez Rodilla, Jesus MiguelThe present study provides new data concerning the chemical characterisation of Physcia mediterranea Nimis, a rare Mediterranean species belonging to the family Physciaceae. The phytochemical screening was carried out using GC-MS, HPLC-ESI-MS-MS, and NMR techniques. Hot extraction of n-hexane was carried out, followed by separation of the part insoluble in methanol: wax (WA-hex), from the part soluble in methanol (ME-hex). GC-MS analysis of the ME-hex part revealed the presence of methylbenzoic acids such as sparassol and atraric acid and a diterpene with a kaurene skeleton which has never been detected before in lichen species. Out of all the compounds identified by HPLC-ESI-MS-MS, sixteen compounds are common between WA-hex and ME-hex. Most are aliphatic fatty acids, phenolic compounds and depsides. The wax part is characterised by the presence of atranorin, a depside of high biological value. Proton 1H and carbon 13C NMR have confirmed its identification. Atranol, chloroatranol (depsides compound), Ffukinanolide (sesquiterpene lactones), leprolomin (diphenyl ether), muronic acid (triterpenes), and ursolic acid (triterpenes) have also been identified in ME-hex. The results suggested that Physcia mediterranea Nimis is a valuable source of bioactive compounds that could be useful for several applications as functional foods, cosmetics, and pharmaceuticalsItem Assessment of Some Biological Activities of Eucalyptus blakelyi Maiden Using the Essential Oil, Methanolic and Aqueous Extracts(Har Krishan Bhalla and Sons, 2020) Boukhalfoun, Leila; Kirouani, A.; Behidj, N.; Gana, S.Several species of Eucalyptus are used in folk medicine as an antiseptic, anti-inflammatory, and against respiratory infections, such as colds, sinus congestion and influenza. These species have shown potential antioxidant properties in addition to antimicrobial activities. In the present paper, we were interested in Eucalyptus blakelyi Maiden, a species belonging to the Myrtaceae family. Our study can be considered as the first detailed report on the chemical composition, antioxidant and antimicrobial activity of different extracts. The aim of the current study is to evaluate the biological activities of essential oils, methanolic and aqueous extracts of this plant. The present work was realized on leaves collected from National Institute for Forest Research (INRF) of Baïnem (Algiers, Algeria), and the results showed that essential oil’s yield obtained by hydrodistillation was 2.13 %. Actually, 15 compounds were identified by GC-MS profile, and the major compound was 1.8-cineole with 62.74 %. Indeed, the antiradical activity using the DPPH method has shown that methanolic and aqueous extracts had an interesting antioxidant ability with an IC50 of 0.33 and 0.39 mg/ ml respectively. The antimicrobial activity of the essential oil, methanolic and aqueous extracts on eleven microbial strains was evaluated using the aromatogram method. Thus, the methanolic extract proved to be the most active compared to the aqueous extract and the essential oil by inducing a maximum inhibition zones of 19.66 mm for Staphylococcus aureus ATCC29213 and 25.66 mm for Candida albicans. The results suggest potential applications of essential oil in food and extracts in pharmaceutical industryItem The effect of ultrasound Pre-treatment on the yield, chemical composition and antioxidant activity of essential oil from wild lavandula stoechas L(Taylor & Francis, 2018) Chekoual, Lilia; Aissat, Abdelkader; Ait-Kaci Aourahoun, Karima; Benabdelkader, Tarek