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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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Adsorption properties of Rosmarinus officinalis oil as green corrosion inhibitors on C38 steel in 0.5 M H_2SO_4

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Acta Metallurgica Sinica(English Letters) 2010年第1期23卷 13-20页

作者： E.El Ouariachi J.Paolini M.Bouklah A.Elidrissi A.Bouyanzer B.Hammouti J-M.desjobert J.Costa Laboratoire de Chimie Appliqu'ee et Environnement Facult'e des SciencesUniversit'e Mohamed PremierBP71760000 OujdaMorocco UMR CNRS 6134 Laboratoire de Chimie des Produits NaturelsUniversit'e de CorseFrance

Rosmarinus officinalis essential oil obtained by hydrodistillation was tested as corrosion inhibitor of steel in 0.5 M H2SO4 using weight loss measurements, and electrochemical .polarisation methods. Results obtained indicate that the corrosion rate is reduced and R. officinalis oil adsorbs on the metal surface and then inhibits corrosion process. Its inhibition efficiency increases with oil increasing content to reach 61% at 1 g/L. Polarisation curves indicate that RO acts as a cathodic inhibitor. The inhibition efficiency of naturally oil remains slightly constant with the rise of temperature. Chemical analysis of R. officinalis essential oil was carried out using capillary GC and GC/MS. The oil composition was characterized by high amount of oxygenated monoterpene （77%） with 1,8-cineol （52.1%） as main component. Discussion of adsorption was investigated on the the isotherm adsorption of essential oil on basis of essential oil composition. Finally the steel has been also reported.

关键词： Rosmarinus officinalis oil Adsorption Corrosion Inhibition Steel 1,8-cineol

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Primary Mode of Action of <i>Cistus ladaniferus</i>L. Essential Oil Active Fractions on <i>Staphylococcus aureus</i>Strain

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Advances in Microbiology 2015年第13期5卷 881-890页

作者： Elodie Guinoiseau Anne Luciani Dominique de Rocca Serra Yann Quilichini Liliane Berti Vannina Lorenzi Laboratoire de Biochimie et de Biologie Moléculaire du Végétal Université de Corse Campus Grimaldi Corte France Laboratoire de Chimie et Biomasse Université de Corse Route des Sanguinaires Ajaccio France Laboratoire Parasites et Ecosystèmes Méditerranéens Université de Corse Campus Grimaldi Corte France

The purpose of this study was to investigate the primary mode of action of Cistus ladaniferus essential oil active fractions on Staphylococcus aureus strain ATCC6538P (CIP 53.156). The mode of inhibition of the active fractions was assessed by determining the minimum inhibitory concentration (MIC). The effects of time on cell integrity were determined by time-kill, bacteriolysis and loss of 260 and 280-nm-absorbing material assays. Measurement of intra- and extracellular ATP was used to evaluate the energy remaining in the cells after treatment. A bacteriostatic and a bactericidal mode of inhibition were established respectively for acetate and alcohol fractions at their MIC. No intracellular material leakage and no lysis occurred after treatments with these fractions. In both cases, we observed a decrease of the ATP level within S. aureus cells whilst there was no proportional increase outside the cells. However, the effects induced by alcohols are more pronounced than those provoked by acetates. Indeed, marked structural changes were observed by transmission electron microscopy (TEM). The septal material of cells undergoing division became thicker and stained more lightly. The proportion of septa is also markedly increased and defective with respect to placement. These observations suggest a blocking in cell division, probably caused by the inhibition of ATPase or a disturbance in proton motrice force by the hydrophobic molecules viridiflorol and ledol, mainly present in alcohol fraction.

关键词： Staphylococcus aureus Cistus ladaniferus Essential Oil MIC ATP Cell Division Blocking TEM

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An early evaluation of translocation actions for endangered plant species on Mediterranean islands

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Plant Diversity 2019年第2期41卷 94-104页

作者： Giuseppe Fenu Gianluigi Bacchetta S.Christodoulou Charalambos Christini Fournaraki Gian Pietro Giusso del Galdo Panagiota Gotsiou Angelos Kyratzis Carole Piazza Magdalena Vicens Maria Silvia Pinna Bertrand de Montmollin Centro Conservazione Biodiversità (CCB) Dipartimento di Scienze della Vita e dell'Ambiente (DISVA) Università degli Studi di Cagliari Hortus Botanicus Karalitanus (HBK) Università degli Studi di Cagliari department of Forests Ministry of Agriculture Rural Development and Environment CIHEAM Mediterranean Agronomic Institute of Chania (MAICh) department of Biological Geological and Environmental Sciences University of Catania Agricultural Research Institute Ministry of Agriculture Rural Development and Environment Office de l’Environnement de la corse (OEC) Jardí Botànic de Sóller Foundation (JBS) Mediterranean Plant Specialist Group (IUCN/SSC)

In situ conservation is widely considered a primary conservation strategy. Plant translocation, specifically, represents an important tool for reducing the extinction risk of threatened species. However, thus far, few documented translocations have been carried out in the Mediterranean islands. The CareMediflora project, carried out on six Mediterranean islands, tackles both short-and long-term needs for the insular endangered plants through in situ and ex situ conservation actions. The project approach is based on using ex situ activities as a tool to improve in situ conservation of threatened plant *** island plants(representing 45 taxa) were selected for translocations using common *** the translocations, several approaches were used, which differed in site selection method, origin of genetic material, type of propagative material, planting method, and more. Although only preliminary data are available, some general lessons can be learned from the experience of the CareMediflora project. Among the factors restricting the implementation of translocations, limited financial resources appear to be the most important. Specific preliminary management actions, sometimes to be reiterated after translocation, increase the overall cost, but often are necessary for translocation success. Translocation using juvenile/reproductive plants produces better results over the short term,although seeds may provide good results over the long run(to be assessed in the future). Regardless,plant translocation success can only be detected over long periods; therefore, proper evaluation of plant translocations requires a long-term monitoring protocol. Care-Mediflora project represents the first attempt to combine the existing approaches in a common plant conservation strategy specifically focusing on the Mediterranean islands.

关键词： Care-Mediflora project ex situ conservation in situ conservation Insular flora Threatened plant populations

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Organic aerosol molecular composition and gas–particle partitioning coefficients at a Mediterranean site(Corsica)

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Journal of Environmental Sciences 2016年第2期28卷 92-104页

作者： Stéphanie Rossignol Florian Couvidat Caroline Rio Sébastien Fable Guillaume Grignion Savelli Olivier Pailly Eva Leoz-Garziandia Jean-Francois Doussin Laura Chiappini Institut National de l'Environnement Industriel et des Risques (INERIS) 60 550 Verneuil-en-Halatte France LISA UMR CNRS 7583 Universite Paris Est Creteil et Universite Paris Diderot Institut Pierre Simon Laplace Creteil France CEREA Joint Laboratory Ecole des Ponts Paris Tech/EDF R&D Universite Paris-Est 77455 Marne la Vallee France Qualitair corse Lieu-dit Lergie RN 200 20250 Corte France Institut National de la Recherche Agronomique (INRA) 20230 San Giuliano Corse France

Molecular speciation of atmospheric organic matter was investigated during a short summer field campaign performed in a citrus fruit field in northern Corsica（June 2011）. Aimedat assessing the performance on the field of newly developed analytical protocols, this work focuses on the molecular composition of both gas and particulate phases and provides an insight into partitioning behavior of the semi-volatile oxygenated fraction. Limonene ozonolysis tracers were specifically searched for, according to gas chromatography–mass spectrometry（GC–MS） data previously recorded for smog chamber experiments. A screening of other oxygenated species present in the field atmosphere was also performed. About sixty polar molecules were positively or tentatively identified in gas and/or particle phases. These molecules comprise a wide range of branched and linear, mono and di-carbonyls（C_3–C7）,mono and di-carboxylic acids（C_3–C_18）, and compounds bearing up to three *** these compounds, some can be specifically attributed to limonene oxidation and others can be related to α- or β-pinene oxidation. This provides an original snapshot of the organic matter composition at a Mediterranean site in summer. Furthermore, for compounds identified and quantified in both gaseous and particulate phases, an experimental gas/particle partitioning coefficient was determined. Several volatile products, which are not expected in the particulate phase assuming thermodynamic equilibrium, were nonetheless present in significant concentrations. Hypotheses are proposed to explain these observations, such as the possible aerosol viscosity that could hinder the theoretical equilibrium to be rapidly reached.

关键词： Secondary organic aerosol Gas–particle partitioning Mediterranean area Carbonyls Carboxylic acids

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Analytical Monitoring of the Chemicals Present in the Discharge Water Generated by the Surface Treatment Industry

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Journal of Environmental Protection 2013年第7期4卷 53-60页

作者： Nadia Morin-Crini Coline Druart Sophie Gavoille Celine Lagarrigue Gregorio Crini universite de Franche-Comte Chrono-EnvironnementBesancon CedexFrance Agence de l’Eau Rhone-Mediterranee-corse Delegation de BesanconBesancon CedexFrance Agence de l’Eau Rhone-Mediterranee-corse Departement des Interventions et des Actions de BassinLyon CedexFrance

Industrial discharge water, and especially that from the surface treatment industry (ST), contains non-negligible amounts of pollutants even though the legislation is fully respected. In spite of this, no detailed studies list the exact chemical composition of these effluents. The present study reports the results of analyses performed over a 6-month period involving 15 standard water parameters. Over 160 substances including 33 metals, 58 volatile organic compounds (VOCs), 16 polycyclic aromatic hydrocarbons (PAHs), 24 chlorophenols (CPs), 16 alkylphenols (APs), 5 chloroanilines (CAs) and 7 polychlorobiphenyls (PCBs) were monitored. The industrial effluents presented polycontamination involving metals, minerals and organics with a high degree of qualitative and quantitative variability. Of the 160 substances monitored, 46 were regularly found: 25 inorganics including 8 metals (Co, Cr, Cu, Fe, Ni, Pb, Sn, Zn) and 21 organics (4 PAHs, 10 VOCs, 4 CPs and 3 APs). Eighteen were systematically presented at quantifiable levels.

关键词： Discharge Water Metal-Finishing Industry Hazardous Substances Analytical Monitoring

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Chemical Variability and Antibacterial Activity of Eucalyptus camaldulensis Essential Oils from Senegal

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International Journal of Organic Chemistry 2022年第4期12卷 173-180页

作者： Yoro Tine Alioune Diallo Idrissa Ndoye Cheikhouna Gaye Benjamin Ndiaye Abdoulaye Diop Jean Costa Cheikh Saad Bouh Boye Alassane Wélé Julien Paolini Laboratoire de Chimie Organique et Thérapeutique Faculté de Médecine Pharmacie et Odontologie Université Cheikh Anta Diop Dakar Senegal université de corse UMR CNRS 6134 SPE Laboratoire de Chimie des Produits Naturels Campus Grimaldi Corte France Laboratoire de Bactériologie-virologie H&ocirc pital Aristide Le Dantec Dakar Senegal

1,8-cineole, also known as eucalyptol, is the main constituent and the most important of the leaf oils of many species of the genus Eucalyptus. In present study, the essential oils isolated by hydrodistillation from the leaves of Eucalyptus camaldulensis from six different locations were analyzed by GC-FID and GC-MS. Essential oil yields ranged from 0.33% to 4.35%. In total, 34 constituents were identified, accounting for 94.0% to 99.8% of the total compositions. 1,8-cineole (46.4% - 84.4%) was the main constituent of all the essential oil samples, except for one sample collected in the Fatick region, which had p-cymene (46.4%) and 1,8-cineole (26.0%) as major compounds. The essential oil showed excellent activity against S. aureus, E. coli and E. faecalis (IZ = 25.3 ± 1.2 mm;18.7 ± 0.6 mm;17.8 ± 0.3 mm, respectively) and moderate activity against P. aeruginosa (IZ = 10.8 ± 0.8 mm). They may have potential applications in food and pharmaceutical products.

关键词： Eucalyptus camaldulensis Essential Oils Antibacterial Activity 1 8-Cineole and GC-SM

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Are releases of generalist predators always the best way in the biological control of phytophagous pests?Some case studies in French vineyards

Are releases of generalist predators always the best way in ...

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International Conference:Technology Transfer in Biological Control:From Research to Practice

作者： S.KREITER P.AUGER M.S.TIXIER G.SENTENA M.WEBER G.SALVAT ENSA.M/INRA laboratoire de Zoologie2 place Viala34060 Montpellier cedex 01France ITV(Centre technique interprofessionnel de la Vigne et du Vin) 6 rue du 16~e Chasseur21200 BeauneFrance Service regional de la Protection des Vegetaux(SRPV)Languedoc-Roussillon rue d’Alco34034 Montpellier cedex 01France CIVAM corse Station "Les Cazelles"21230 San GiulianoFrance

"Generalist",i.e those species which consume a wide variety of foods, including some of plant origin such as pollen,are the dominant members of the phytoseiid mite(Acari,Phytoseiidae) fauna in some perennial crops. Biological attributes commonly evident in "generalist" in contrast to "specialist" phytoseiids include a lower reproductive potential on mite prey,

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Responses of five woody species to burial by marly sediment: the role of biomass allocation pattern flexibility

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Journal of Plant Ecology 2012年第3期5卷 287-293页

作者： M.Burylo F.Rey T.Dutoit Cemagref Grenoble UR Ecosystemes Montagnards2 rue de la PapeterieBP 7638402 Saint Martin d’Heres CedexFrance Institut Mediterraneen d’Ecologie et de Paleoecologie Unite Mixte de Recherches CNRS-IRDInstitut Universitaire deTechnologieUniversite d’AvignonAgroparcBP 120784911 Avignon Cedex 9France

Aims In eroded lands of the French Southern Alps,burial of early established seedlings under marly sediment weakens the effect of vegetation on soil stabilization and sediment ***,this protective role is largely dependent on species’resistance to burial,and the understanding of species’tolerance to this environmental disturbance is highly valuable for basic knowledge on plant succession and for ecological restoration *** The response of five woody species with contrasting ecological requirements and natural habitats—three tree species,Pinus nigra,Robinia pseudoacacia and Acer campestre,and two shrubs,Ononis fruticosa and Hippophae rhamnoides—to experimental burial under marly sediment was *** were exposed to three burial levels:no burial(control),partial burial(50%of seedling height)and complete burial(100%of seedling height).Burial tolerance was evaluated based on seedling survival,height and *** allocation to shoots and roots and soluble sugar and starch contents in roots and stems were measured to identify plant traits that determine species response to *** Findings All species survived partial burial but only *** seedlings emerged from complete *** species were more tolerant to burial and buried plants showed no significant differences with *** two shrubs were found less tolerant and buried plants showed slower growth than *** results showed that species response was not related to initial soluble and starch content in roots and stems,but instead to biomass allocation pattern flexibility.

关键词： burial sediment marls response to burial plant traits

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The safety and efficacy of palbociclib in older patients with advanced breast cancer in a real-world setting

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Journal of Cancer Metastasis and Treatment 2022年第1期8卷 15-27页

作者： Etienne Gouton Louis Tassy Joëlle Micallef Amir Meskine Renaud Sabatier Maud Cecile-Herry Cécile Braticevic Anthony Goncalves Frederic Viret Alexandre de Nonneville Coline Montegut Franck Rouby Frederique Rousseau department of Medical Oncology Institut Paoli-CalmettesMarseille 13009France Aix-Marseille Univ CNRS U7258INSERM U1068Institut Paoli-CalmettesCRCMMarseille 13009France department of Clinical Pharmacology Régional Center of Pharmacovigilance Marseille-Provence-CorseAssistance Publique-Hôpitaux de MarseilleAix-Marseille Univ.Neurosciences InstituteMarseille 13005France

Aims:Palbociclib has been approved in combination with endocrine therapy(ET)for hormone receptor-positive(HR+)/human epidermal growth factor receptor 2-negative(HER2-)advanced breast cancer(ABC),regardless of *** though ABC is one of the most prevalent cancers in older patients,very few patients≥65 years old were included in pivotal ***,the current study evaluated the safety and efficacy of palbociclib in“real-world”routine treatment of unselected older patients with HR+/***:Data were collected on patients>70 years old who were treated with palbociclib plus ET for HR+/HER2-ABC in our *** analyzed safety data(CTCAE v4.0 criteria)and outcomes,such as progression-free survival(PFS)and overall survival(OS),as well as any associations between main geriatric characteristics and our ***,we assessed safety at a national level by analyzing all palbociclib-related adverse events(AEs)reported in the French Pharmacovigilance Database(FPVD)during the same ***:From February 2016 to July 2019,52 patients were identified with a median age of 80.9 years,of whom 88%presented an *** most common grade 3-4 AE was neutropenia(64%).Median PFS and OS were nine months and not reached,*** FPVD reports 227 cases of palbociclib-related AEs,with older and younger patients sharing similar ***:Palbociclib is well tolerated in older patients with efficacy comparable to that in younger ***,the addition of palbociclib to ET should be evaluated individually in this older and frailer subgroup.

关键词： Advanced breast cancer palbociclib older patients tolerance efficacy pharmacovigilance

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