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Noudogbessi J.-P.A.,British Petroleum | Zannou-Boukari E.T.,University Abomey Calavi | Dovonon L.F.,British Petroleum | Youssao A.,British Petroleum | And 7 more authors.
International Journal of Applied Chemistry | Year: 2013

Within the framework of the search for alternative methods of struggle against the destruction of the maize by P. truncatus (Horn), the vegetable kingdom, in particular the aromatic plant, now offers enough possibilities. The essential oils extracted from these vegetable materials could constitute a credible alternative because less expensive and without major impact on the human health, the animals and on the environment. The present work concerns the bioactivity of the volatile extracts of two aromatic plants known in rural areas in Benin for the preservation of the agricultural products. The chemical compositions of essential oils extracted from L. camara and P. guajava leaves were studied by gas chromatography coupled with the mass spectrometry (GC/MS). Forty-eight compounds were identified representing 96.8% of the L. camara leaves essential oil from Abomey-calavi. The main compounds (> 5%) are: β-caryophyllene (19.3%), sabinene (15.9%), (Z)-β-ocimene (11.2%), α-humulene (6.5%), germacrene-A (5.8%). The essential oil extracted from P. guajava leaves collected to Banigbe (Benin) contained fifty-one compounds corresponding to 97.7% of the total weight of the volatile extract. The major compounds (>5%) of this essential oil are epi-β-bisabolol: 11.7%; β-caryophyllene: 10.9%; β-bisabolene: 7.5%. The different tests realized on local variety of the maize grain (Zea mays) "Massahouekoun" showed that these essential oils variously have shown larvicidal and ovicidal effects on larvae and eggs of P. truncatus adult. These activities caused a significant delay in the development of young P. truncatus due to the doses applied and also the active compounds of the essential oils studied. © Research India Publications.

Noudogbessi J.P.A.,University Abomey Calavi | Tchobo P.F.,University Abomey Calavi | Alitonou G.A.,University Abomey Calavi | Avlessi F.,University Abomey Calavi | And 5 more authors.
Asian Journal of Chemistry | Year: 2013

The chemical composition of essential oils, fatty acids and unsaponifiable of the limbs, foliars sheaths and rhizomes of Siphonochilus aethiopicus were studied by GC/MS. In petroleum ether extracts, the lipidic fractions are marked by significant rates (7.41 to 23.45 %) of fatty acids in C18. The majority of unsaponifiable compounds from the limbs, foliars sheaths and rhizomes of S. aethiopicus are essentially consist of terpenoïds accompanied by heneicosane (6.2 to 21.6 %). Otherwise, S. aethiopicus contains varied rates of catechic saponins, tanins and leucoanthocyanes in its organs.

Noudogbessi J.P.,University Abomey Calavi | Alitonou G.A.,University Abomey Calavi | Djenontin T.,University Abomey Calavi | Avlessi F.,University Abomey Calavi | And 4 more authors.
Oriental Journal of Chemistry | Year: 2013

Cymbopogon giganteus (Hochst.) Chiov., Cymbopogon nardus (L.) Rendle and Cymbopogon schoen anthus (L.) Sprend. Ssp. Proximus (Hochtst. Ex A. Rich.) Maire & Weiler plants are highly aromatic and reputed in traditional medicine in Benin. Physico-chemical studies and chemical composition of the essential oils (EO) extracted from the leaves of the three plants were realized by gas chromatography connected to a flame ionization detector (GC/FID) and by gas chromatography coupled to mass spectrometry(GC/MS). The major compounds (> 10%), marking the chemical profile of each of the essential oils studied, independently of the botanical variety considered, are constitued by the piperitone( 62.9%), geraniol (29.9-34.5%), citronellal (27.9-32.3%), limonene (10.8%-19.4%), cis-mentha-1(7),8-dien-2-ol (18.4%), trans-mentha-1(7),8-dien-2- ol (17.0-19.9%), carvotanacetone (17.9%), trans-p-mentha-2,8-dien-1-ol(12.0-17. 4%), cis-dihydrocarvone (10.1-17.2%), δ-2-carene (14.4%), myrtenol(11.9%)and citronellol(10.1-11.7%). The results of physico-chemical analyzes performed suggest a similarity between refractive index and density of the essential oil of Cymbopogon giganteus whose values are the highest. The values of the rotatory powers and acid index values did not remain homogeneous samples of essential oil of the same botanical species. They varied according to plant species studied and their origins.

Noudogbessi J.P.,University Abomey Calavi | Chalard P.,National Graduate School of Chemistry of Clermont Ferrand | Figueredo G.,Laboratoire dAnalyse des Extraits Vegetaux et des Aromes LEXVA Analytique | Alitonou G.A.,University Abomey Calavi | And 5 more authors.
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2013

P. guajavaLinn.L. camaraLinn.are twoaromatic plantsthat produce essential oilsandmajor medicinalutilitiesin Benin.Essential oilsobtainedby hydrodistillationofP. guajavaandL. camaraleaves collectedin Beninwere analyzed bygas chromatographyconnected to a flameionization detector(GC/FID) andgas chromatographycoupled with the mass spectrometry (GC/MS). The major compounds(> 10%) identified in the essential oils ofP. guajavaare limonene(10.9-20.7%), β-bisabolol(14.9-20.2%), epi-β-bisabolol(11.7-18.9%), (2E,6E)-farnesol(10.0%), β-bisabolene(10.0%). 1,8-cineole(23.4%), sabinene(15.9-21.5%), β-caryophyllene(10.9-19.3%), (Z)-β-ocimene(11.2-13.8%) were the major constituents(>10%) having marked the essential oils ofL.camara. The physical characteristicsdeterminedhave varied, at the same time, according to the plant species andwithin the samplesforming ahomogeneouspopulationbotanically.

Abderrahim A.,University of Abderrahmane Mira de Béjaïa | Belhamel K.,University of Abderrahmane Mira de Béjaïa | Chalchat J.-C.,University Blaise Pascal | Figueredo G.,Laboratoire dAnalyse des Extraits Vegetaux et des Aromes LEXVA Analytique
Records of Natural Products | Year: 2010

Essential oil extracted from dried aerial part of Artemisia arborescens L. collected from Bejaïa (Algeria), was analyzed by gas chromatography-flame ionization detector (GC-FID) and gas chromatography coupled to mass spectrometry (GC-MS). The main constituents of the essential oil were chamazulene (30.2%), β-thujone (27.8%), β-eudesmol (8.1%) and catalponol (5.5%).

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