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The Essential Oil of Ocimum americanum from Senegal and Gambia as a Source of Methyleugenol for the Control of Bactrocera dorsalis, Fruit Fly

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Journal of Agricultural Chemistry and Environment 2024年第1期13卷 133-141页

作者： Yoro Tine Antonio Alain Coffi Sinzogan Ousmane Ndiaye Cebastiana Sambou Alioune Diallo Ismaila Mbenga Kemo Badji El Hadji Omar Dieng Assa Balayara Jeanne Diatta Cheikhouna Gaye Julien Paolini Jean Costa Alassane Wele saliou ngom Laboratoire de Chimie Organique et Thérapeutique Faculté de Médecine Pharmacie et Odontologie Université Cheikh Anta Diop Dakar Sénégal Faculte des Sciences Agronomiques Universite d’Abomey Calavi Cotonou Benin Ecole Nationale Supérieure d’Agriculture (ENSA) Université Iba Der Thiam de Thiès Thiès Sénégal Direction de la Protection des Végétaux Rufisque Sénégal Laboratoire de Chimie des Produits Naturels Université de Corse Corte France National Agricultural Research Institute (NARI) Sere Kunda Gambia Institut Sénégalais de Recherches Agricoles (ISRA) Dakar Sénégal

The fruit fly, Bactrocera dorsalis (Diptera: Tephritidae) is one of the most important pests in all mango-producing areas, particularly in West Africa. In Senegal, O. americanum leaves have been used for several years to control this fly. However, to our knowledge, no chemical studies have been carried out. Thus, the aim of this study is to determine the chemical composition of the essential oil of O. americanum leaves collected in Senegal and Gambia. The essential oil obtained by hydrodistillation of these leaves is analyzed by GC/FID and GC/MS. Yields of essential oils from O. americanum leaves are 3.84% and 2.13%, respectively. Analysis of these essential oils by GC/FID and GC/MS allowed the identification of 23 compounds representing almost 100% of the total compositions. These essential oils are mainly dominated by methyleugenol (72.0% and 75.8%, respectively). Other components in significant percent are trans-β-caryophyllene (13.9% and 13.0%, respectively), germacrene D (4.1% and 3.7%, respectively), β-elemene (3.3% and 0.9%, respectively). Due to the high methyleugenol content, this study explains the attractive potential of O. americanum towards B. dorsalis. In perspective, we plan to evaluate the attractive effect of the essential oil and leaf powder of O. americanum against B. dorsalis, a real pest of mango orchards in Senegal.

关键词： Ocimum americanum Essential Oils Methyleugenol Bactrocera dorsalis GC/MS

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Contribution to the Hydrochemical Study of Groundwater from the Continental Terminal in Saloum

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Journal of Water Resource and Protection 2022年第2期14卷 51-71页

作者： Sakhel Ndong Baba ngom Saidou Ndao Alioune Ly saliou ngom Séni Tamba UFR Sciences & Technologies University Iba Der Thiam of Thies Thies Senegal Laboratory of Sciences and Technologies of Water and Environment (LaSTEE) Polytechnic School of Thies (EPT) Thies Senegal Société Nationale des Eaux du Senegal (SONES) Dakar Senegal

This paper focuses on the study of the aquifer of the Continental Terminal in the south of Saloum river. This study aims to participate in the knowledge of the physicochemical quality and to help understand the origins and processes of the mineralization of the water of the Continental Terminal (CT). Physicochemical treatments show an average pH of 6.61 indicating a slightly acidic water overall. The electrical conductivity varies between 37.4 and 12,320 μS·cm-1 with an average of 729.3 μS·cm-1. High conductivities are recorded around the ocean and the Saloum River, indicating higher mineralized waters in these areas. The geochemical study and multivariate statistical analysis indicate three groups of the sampled waters. Group 1 is mainly formed of the Ca-HCO3, Na-HCO3, Ca-Cl and Na-Cl facies. This group is the most common one and is found throughout the southern Saloum area. Group 2, mainly made up of the Ca-HCO3 and Na-HCO3 facies, is located in the center, east, west and north of the zone. The mineralization of these two groups is believed to be of carbonate, evaporitic and/or anthropogenic origin. Group 3 is formed from the Na-Cl facies. This group is located in the north and west of the area (near the ocean and the Saloum river). This group 3 suggests pollution of marine and anthropogenic origin. The calculated base indices suggest cationic exchanges between the waters and the formations of the water table of the terminal continental.

关键词： Continental Terminal Aquifer Saloum Physico-Chemical Quality Mineralization Geochemistry Multivariate Statistical Analysis

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Chemical characterization of essential oil from the leaves of Callistemon viminalis(D.R.) and Melaleuca leucadendron(Linn.)

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Asian Pacific Journal of Tropical Biomedicine 2017年第4期7卷 347-351页

作者： Rokhaya Fall saliou ngom Dienaba Sall Mbacke Sembène Abdoulaye Samb Laboratory of Natural Products Department of ChemistryFaculty of Science and TechnologyCheikh Anta Diop University Center for the Development of Horticulture Senegalese Institute of Agricultural Research Laboratory of Entomology Department of Animal BiologyFaculty of Science and TechnologyCheikh Anta Diop University

Objective: To isolate and identify the compounds in the essential oils from the leaves of Callistemon viminalis(D.R.) and Melaleuca leucadendron(Linn.) collected in Dakar,***: The essential oils from the leaves of these two myrtaceaes were extracted by steam distillation and analyzed by gas chromatograph and gas chromatography–mass ***: A total of 34 constituents were identified in the oil of Callistemon viminalis and the major compounds were 1.8-cineole(58.12%), limonene(9.72%), a-terpineol(9.56%),geranial(6.02%), d-elemene(3.53%), myrcene(2.96%) and a-pinene(2.49%).For the essential oil of Melaleuca leucadendron, 43 constituents were identified, and 1.8-cineole(28.87%), epiglobulol(23.06%), a-pinene(12.22%), limonene(11.65%) and a-terpineol(7.06%) were major ***: Considering properties of the identified major compounds, essential oils of both studied myrtaceae could be used in the medicine field including the food, pharmaceutical and cosmetic industry.

关键词： Callistemon viminalis Melaleuca leucadendron Essential oil Chemical composition

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Larvicidal activity of Neem oil and three plant essential oils from Senegal against Chrysodeixis chalcites(Esper, 1789)

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Asian Pacific Journal of Tropical Biomedicine 2018年第1期8卷 67-72页

作者： saliou ngom Raimundo Cabrera Perez Ma Anta Mbow Rokhaya Fall saliou Niassy Andreea Cosoveanu Serigne Mbacké Diop El Hadji Barka Ndiaye Moussoukhoye Diop Georges Lognay Institut Sénégalais de Recherches Agricoles Unidad de Fitopatologia Facultad de Biología Universidad de la Laguna Département de chimie Faculté des Sciences et Techniques Université Cheikh Anta Diop de Dakar Development University of Pretoria Gembloux Agro-Bio Tech Université de Liège Chimie Analytique Department Agro Bio Tech

Objective: To evaluate the insecticide, larvicidal and repellent activity of the essential oils from Callistemon viminalis, Melaleuca leucadendron, and Hyptis suaveolens against Chrysodeixis chalcites and to compare it with neem oil(Azadirachta indica). Methods: The essential oils of the leaves of these aromatiques plants were extracted by steam distillation and contacts tests were carried out. Results: Essential oils in ethanol from Callistemon viminalis showed a higher biological activity than the neem with 100% larval mortality at the concentration of 2 μg/m L for 6 h, 100% and 90% in ethanol from Melaleuca leucadendron and Hyptis suaveolens, respectively at the concentration of 4 μg/m L for 24 h. By inhalation, the essential oils from Melaleuca leucadendron and of Hyptis suaveolens were more effective with mortality rates of larvae 100% and 50% respectively at 2 μg/L air applied after 24 h. Nevertheless, the neem has shown to be a repulsive plant and anti-nutritional plant. A significant difference in the percentages of consumption between leaves treated with neem oil and the control samples was observed(Newman-Keuls test) except for Melaleuca leucadendron. Conclusions: The results of the study highlight remarkable biocide, properties of tested extracts, which provides important opportunities for the development of biopesticides.

关键词： Plant extracts Chemical constituents Insecticidal activity Chrysodeixis

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Effect of Casuarina Crushed Nodules, Rhizospheric Soil and Leaves Compost on Salt Tolerance of <i>Casuarina equisetifolia</i>L. and <i>Casuarina obesa</i>Miq.

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Open Journal of Soil Science 2020年第9期10卷 359-373页

作者： Marie Claver Ndébane ngom Pape Ibrahima Djighaly Nathalie Diagne Maty Ndour Ganna Ndong Daouda ngom Mariama ngom saliou ngom Sergio Svistoonoff Centre National de Recherches Agronomiques (ISRA/CNRA) Bambey Sénégal Département d’Agroforesterie Université Assane Seck de Ziguinchor Ziguinchor Sénégal Laboratoire Commun de Microbiologie LCM: (IRD/ISRA/UCAD) Centre de Recherche de Bel Air Dakar Sénégal Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux (LAPSE) Centre de Recherche de Bel Air Dakar Sénégal Département de Biologie Végétale Université Cheikh Anta Diop de Dakar Dakar Sénégal Centre pour le Développement de l’Horticulture (ISRA/CDH) Cambérène Dakar Sénégal Laboratoire des Symbioses Tropicales et Méditerranéennes (LSTM) Université de Montpellier CIRAD INRAE IRD Institut Agro Campus International De Baillarguet Montpellier France

Soil salinization is one of the major causes of land degradation. In Senegal, this phenomenon continues to grow, making soils unsuitable for agriculture. To rehabilitate salty lands, one of the recommended strategies is the use of salt-tolerant plants. Among them, plants of Casuarinaceae family form a relationship with symbiotic microorganisms such as arbuscular mycorrhizal fungi and nitrogen fixing bacteria. It has been shown that symbiotic microorganisms play an important role in the establishment of tolerant plants in saline conditions (Djighaly et al., 2018). They improve plant performance and reduce transplant shock under salt stress conditions (Diagne et al., 2014). These microorganisms can be used as biofertilizers. However, inocula containing symbiotic microorganisms are either too expensive or unavailable in many developing countries. The aim of this study is to test alternatively affordable and low-tech solutions to promote symbiotic interactions such as Casuarina crushed nodule, Casuarina rhizosphere soil and Casuarina leaves compost that may contain symbiotic microorganisms and also nutrients such as N and phosphorus. Two species of Casuarina (Casuarina equisetifolia L. and Casuarina obesa Miq.) were grown in the greenhouse on sterile soil to which an amendment was added (Casuarina crushed nodules, Casuarina Rhizospheric soil or Casuarina leaves compost). Plants were subjected to saline stress. After four months of cult

关键词： Frugal Innovation Rehabilitation of Salty Lands Casuarina Compost Crushed Nodules Rhizospheric Soil

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Study on the Perceptions and Social Representations of Husbands on Family Planning in the Health District of Pout/Senegal

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Advances in Reproductive Sciences 2022年第2期10卷 59-72页

作者： Mamadou saliou Mbengue Abdoul Aziz Ndiaye Alioune Badara Tall Rakhmatoulaye Seck Awa Ba Ndeye Fatou ngom Fatou Ndiaye Omar Sy Aladji Madior Diop Anta Tal Dia Université Alioune Diop Bambey Bambey Senegal Université Cheikh Anta Diop Dakar Dakar Senegal

Contraception is a set of procedures that aim to achieve temporary infertility in a woman without her ability to conceive being engaged in the future. It plays an essential role in the health of women and children, the psychological well-being of husbands and allows, among other things, savings for the family. The objective was to study the perceptions and social representations of husbands on family planning. A mixed method was used with a qualitative dominance, carried out in the health district of Pout. The result showed that the perceptions and representations of husbands influence this practice family planning. Even if they have positive attitudes and a good level of knowledge about contraceptive methods, their involvement in FP practices remains low with gaps to be filled. Direct or intermediate variables such as the social, cultural, economic and religious aspects are pitfalls. Indeed, the commitment of men and the consideration of their social attributes are variables to be integrated into the process of information and awareness on family planning;this is crucial in achieving Sustainable Development Goal (SDG) 3 (Good Health and Well-being), including its target 7 focused on sexual and proactive health: a second best move towards the demographic dividend.

关键词： Family Planning Perceptions Social Representations Demographic Dividend

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