Search Results - "Rojas, Luis B"

Colorimetric Evaluation of Phenolic Content and GC-MS Characterization of Phenolic Composition of Alimentary and Cosmetic Argan Oil and Press Cake by Rojas, Luis B, Quideau, Stéphane, Pardon, Patrick, Charrouf, Zoubida

“…The global phenolic content of argan oil and press cake samples (alimentary and cosmetic) was evaluated using the Folin−Ciocalteu colorimetric method and the…”
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Evaluation of selected South African medicinal plants for inhibitory properties against human immunodeficiency virus type 1 reverse transcriptase and integrase by Bessong, Pascal Obong, Obi, Chikwelu Larry, Andréola, Marie-Line, Rojas, Luis B., Pouységu, Laurent, Igumbor, Eunice, Meyer, J.J. Marion, Quideau, Stéphane, Litvak, Simon

“…Seventeen aqueous and methanol extracts from nine South African medicinal plants, ethnobotanically selected, were screened for inhibitory properties against…”
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Oleanane-type glycosides from Pittosporum tenuifolium “variegatum” and P. tenuifolium “gold star” by Rengifo Carrillo, Mayra, Mitaine-Offer, Anne-Claire, Miyamoto, Tomofumi, Tanaka, Chiaki, Pouységu, Laurent, Quideau, Stéphane, Rojas, Luis B., Rosquete Porcar, Carmelo, Lacaille-Dubois, Marie-Aleth

“…The phytochemical study of two cultivars of Pittosporum tenuifolium Banks & Sol. ex Gaertn, “variegatum” and “gold star”, led to the isolation of eight…”
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Triterpene saponins from Billia rosea by De Freitas, Luis, Jimenez, Doris, Pimentel, Sherley, Mitaine-Offer, Anne-Claire, Pouységu, Laurent, Quideau, Stéphane, Paululat, Thomas, Gonzalez-Mujica, Freddy, Rojas, Luis B., Rodríguez, María, Lacaille-Dubois, Marie-Aleth

“…Five previously undescribed triterpene saponins, billiosides A-E, and a known analogue, were isolated from the seeds of Billia rosea (Planch. & Linden) C…”
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Chemical Composition and Antibacterial Activity of Origanum majorana L. Essential Oil from the Venezuelan Andes by Ramos, Sulymar, Rojas, Luis B, Lucena, Maria Eugenia, Meccia, Gina, Usubillaga, Alfredo

“…Origanum majorana L. (Lamiaceae) is a plant that is used in gastronomy and natural medicine. The plant material used in this study was collected at San Isidro…”
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Volatile Constituents of the Leaves of Aniba hostmanniana (Lauraceae) and their Antibacterial Activities by De Lima, Wilberto, Rojas-Fermín, Luis B, Koteich-Khatib, Sonia, Lucena, María Eugenia, Arzolad, Juan Carmona

“…The essential oil of Aniba hostmanniana (Nees) Mez, family Lauraceae, was obtained from fresh leaves by hydrodistillation. The chemical composition of the oil…”
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Acylated oleanane-type saponins from Ganophyllum giganteum by Montes, Elier Galarraga, Mitaine-Offer, Anne-Claire, Amaro-Luis, Juan Manuel, Paululat, Thomas, Delaude, Clément, Pouységu, Laurent, Quideau, Stéphane, Rojas, Luis B., Delemasure, Stéphanie, Dutartre, Patrick, Lacaille-Dubois, Marie-Aleth

“…Five oleanane-type saponins (1–5) were isolated from the barks of Ganophyllum giganteum. The fucopyranosyl moiety of the oligosaccharidic chain of two saponins…”
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Volatile Constituents from the Flowers of Spathodea campanulata from the Venezuelan Andes by Villarreal, Silvana, Jaimez, Deisy, Moreno, Sindy, Rojas, Luis B, Usubillaga, Alfredo, Rodríguez, María

“…The chemical composition is reported of the essential oil obtained by hydrodistillation of Spathodea campanulata P. Beauv. (Bignoniaceae) flowers collected in…”
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Steroidal saponins from the fruits of Solanum torvum by Pérez Colmenares, Alida, Rojas, Luis B., Mitaine-Offer, Anne-Claire, Pouységu, Laurent, Quideau, Stéphane, Miyamoto, Tomofumi, Tanaka, Chiaki, Paululat, Thomas, Usubillaga, Alfredo, Lacaille-Dubois, Marie-Aleth

“…Seven steroidal glycosides (1–7) have been isolated from the fruits of Solanum torvum Swartz. Their structures were established by 2D NMR spectroscopic…”
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Chemical composition of the essential oil from the leaves of Carapa guianensis collected from Venezuelan Guayana and the antimicrobial activity of the oil and crude extracts by Meccia, Gina, Quintero, Patricia, Rojas, Luis B, Usubillaga, Alfredo, Velasco, Judith, Diaz, Tulia, Diaz, Clara, Velásquez, Jesús, Toro, Maria

“…The essential oil obtained by hydrodistillation of Carapa guianensis Aubl. (Meliaceae) leaves was analyzed by GC-FID and GC-MS. Twenty-three components were…”
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Chemical composition and antibacterial activity of the essential oil of Cordia verbenacea from the Venezuelan Andes by Meccia, Gina, Rojas, Luis B, Velasco, Judith, Díaz, Tulia, Usubillaga, Alfredo, Arzola, Juan Carmona, Ramos, Sulymar

“…The essential oil of Cordia verbenacea D.C. (Boraginaceae) that grows in Mérida-Venezuela was obtained by hydrodistillation from the aerial parts of the plant,…”
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Chemical composition of the essential oil from Carramboa littlei (Asteraceae) by de Rojas, Yndra Cordero, Rojas, Luis B, Usubillaga, Alfredo

“…The essential oil from the leaves of Carramboa littlei Aristeg. was isolated by hydrodistillation yielding 0.09%, w/v. The chemical composition was determined…”
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Volatile compounds from Tagetes pusilla (Asteraceae) collected from the Venezuela Andes by Buitrago, Diolimar, Rojas, Luis B, Rojas, Janne, Morales, Antonio

“…The essential oil from the leaves of Tagetes pusilla Kunth (Asteraceae) collected from Mérida, Venezuela, was analyzed by GC/MS. A yield of 0.38% oil was…”
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Chemical Composition of the Essential Oil of Croton huberi Steyerm. (Euphorbiaceae) Collected from Tachira-Venezuela by Rojas, Janne, Buitrago, Alexis, Rojas, Luís B, Cárdenas, José, Carmona, Juan

“…GC and GC-MS analyses of Croton huberi essential oil showed the presence of fourteen compounds, with the major ones being β-caryophyllene (18.3 %) and…”
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Volatile constituents of the leaves of Munnozia senecionidis from the Venezuelan Andes by Lara, Joel, Rojas, Luis B, Usubillaga, Alfredo, Carmona, Juan

“…The essential oil of Munnozia senecionidis Benth. (Asteraceae), obtained by hydrodistillation, was analyzed by GC-MS. Twenty compounds were identified,…”
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The chemical composition of the essential oils of Euphorbia caracasana and E. cotinifolia (Euphorbiaceae) from Venezuela by Rojas, Janne, Baldovino, Shirley, Vizcaya, Marietta, Rojas, Luis B, Morales, Antonio

“…The essential oils from leaves of E. caracasana Boiss collected from Miyoi, Pueblo Llano, Mérida State at 1800 m above sea level and leaves of E. cotinifolia L…”
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Chemical composition of the essential oil of leaves and roots of Ottoa oenanthoides (Apiaceae) from Mérida, venezuela by Rojas, Janne, Buitrago, Alexis, Rojas, Luis B, Morales, Antonio, Baldovino, Shirley

“…Essential oils extracted by hydrodistillation from leaves and roots of Ottoa oenanthoides Kunth (Apiaceae) were analyzed by GC/MS. The oils, obtained in yields…”
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Essential oil composition of Hydrocotyle umbellata L. from Venezuela by Rojas, Luis B, Usubillaga, Alfredo, Rondon, Jesus, Vit, Patricia

“…The essential oil isolated by hydrodistillation from the aerial parts of Hydrocotyle umbellata L. (Apiaceae) yielded 0.025% of oil which was analyzed by…”
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Chemical composition and in vitro antibacterial activity of the essential oil of Minthostachys mollis (Kunth) Griseb Vaught from the Venezuelan Andes by Mora, Flor D, Araque, María, Rojas, Luis B, Ramirez, Rosslyn, Silva, Bladimiro, Usubillaga, Alfredo

“…Chemical constituents of the essential oil from the leaves of Minthostachys mollis (Kunth) Griseb Vaught var. mollis collected in January 2008 at Tuñame,…”
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The volatile constituents of Salvia leucantha by Rojas, Luis B, Visbal, Tomas, Morillo, Marielba, de Rojas, Yndra Cordero, Arzola, Juan Carmona, Usubillaga, Alfredo

“…Salvia leucantha Cav. (Lamiaceae), native to Mexico, is found in Venezuela in parks and gardens. Hydrodistillation of the fresh leaves of this plant yielded…”
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