Publications Internationales

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Author: search.filters.author.Aitfella Lahlou, Radhia

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    Dietary use of Rosmarinus officinalis and Thymus vulgaris as anticoccidial alternatives in poultry
    (Elsevier, 2021) Aitfella Lahlou, Radhia; Bounechada, Mustapha; Mohammedi, Arezki; Silva, Luís R.; Alves, Gilberto
    Coccidiosis is a parasitic disease caused by protozoa belonging to the genus Eimeria and whose propagation has a tremendous economic impact on poultry production. The parasite develops in the intestinal tract and causes disturbances in homeostasis that may lead to the death of the animal. Anticoccidial drugs and vaccination are the main preventive measures used against this disease. However, the rapid spread of drug resistance and the emergence of environmental pollutants have led to search other alternatives that do not hinder the health and productivity of broilers. The use of medicinal plants or plant-derived products could be one of these approaches; in fact, plants are reservoirs of bioactive compounds that could be developed as new chemical entities. Two members of the Lamiaceae family, Rosmarinus officinalis and Thymus vulgaris included in the Algerian pharmacopoeia have been reviewed herein, as well as their anticoccidial activity. We discuss their potential uses as natural growth promoters, referring their phytochemical constituents and biological properties that could play a crucial role in improving the symptoms caused by coccidiosis in poultry
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    Chemical Composition and Antibacterial Activity of Lippia multiflora Moldenke Essential Oil from Different Regions of Angola
    (2020) Nsevolo, Samba; Aitfella Lahlou, Radhia; Mpazu, Nelo; Lucia, Silva; Rui, Coca; Rocha, Pedro; Jesus Miguel, López Rodilla
    The purpose of the study was to determine the chemical composition and antibacterialactivity ofLippia multifloraMoldenke essential oils (EOs) collected in different regions of Angola.Antibacterial activity was evaluated using the agar wells technique and vapour phase test. Analysisof the oils by GC/MS identified thirty-five components representing 67.5 to 100% of the totaloils. Monoterpene hydrocarbons were the most prevalent compounds, followed by oxygenatedmonoterpenes. The content of the compounds varied according to the samples. The main componentswere Limonene, Piperitenone, Neral, Citral, Elemol, p-cymene, Transtagetone, and Artemisia ketone.Only one of the eleven samples contained Verbenone as the majority compound. In the vapour phasetest, a single oil was the most effective against all the pathogens studied. The principal componentanalysis (PCA) and hierarchical cluster analysis (HCA) of components of the selected EOs andinhibition zone diameter values of agar wells technique allowed us to identify a variability betweenthe plants from the two provinces, but also intraspecific variability between sub-groups within apopulation. Each group of essential oils constituted a chemotype responsible for their bacterialinhibition capacity. The results presented here suggest that AngolanLippia multifloraMoldenke hasantibacterial properties and could be a potential source of antimicrobial agents for the pharmaceuticaland food industry