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| Registros recuperados: 41 | |
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| Kok, R.P.J. de. |
| A revision of the Peninsular Malaysian species of Beilschmiedia (Lauraceae) is presented with a summary of the taxonomic history of the group, key, full descriptions, distribution maps, conservation assessments, ecological information, ethno-botanical notes and a discussion of morphology. In this treatment, 18 species are recognised; six names are lectotypified (B. insignis, B. kunstleri, B. maingayi, B. membranacea, B. roxburghiana and B. scortechinii) and five are placed into synonymy for the first time; one name is validly published for the first time (B. atra) and one species is recognised and described here as new to science (B. kochummenii). Most species are considered to be common (Least Concern), but B. atra must be considered to be extinct, two... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Beilschmiedia; Lauraceae; Peninsular Malaysia; Taxonomy. |
| Ano: 2016 |
URL: http://www.repository.naturalis.nl/record/613893 |
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| ANDRADE,PRISCILA M. DE; MELO,DAIANA C. DE; ALCOBA,ANA ELISA T.; FERREIRA JÚNIOR,WALNIR G.; PAGOTTI,MARIANA C.; MAGALHÃES,LIZANDRA G.; SANTOS,TAINÁ C.L. DOS; CROTTI,ANTÔNIO E.M.; ALVES,CASSIA C.F.; MIRANDA,MAYKER L.D.. |
| Abstract Leishmaniasis is an endemic disease caused by protozoa of the genus Leishmania, which affects around two million people worldwide. One major drawback in the treatment of leishmaniasis is the emergence of resistance to current chemotherapeutics. Medicinal and aromatic plants constitute a major source of natural organic compounds. In this study, the leaf essential oil of Cryptocarya aschersoniana was obtained by hydrodistillation in a Clevenger-type apparatus, and the chemical composition was analyzed by GC-MS and GC-FID. The essential oil of these species was predominantly constituted by monoterpene hydrocarbons (48.8%). Limonene (42.3%), linalool (9.7%) and nerolidol (8.6%) were the main constituents in the oil of C. aschersoniana. The in vitro... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cryptocarya aschersoniana; Lauraceae; Essential oil; Leishmania amazonensis; Cytotoxic activity. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602671 |
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| Damasceno,Carolina Sette Barbosa; Oliveira,Letícia Freire de; Szabo,Ellis Marina; Souza,Ângela Maria; Dias,Josiane Fatima Gaspari; Miguel,Marilis Dalarmi; Miguel,Obdúlio Gomes. |
| ABSTRACT The essential oil composition of the Ocotea bicolor, native plant of Brazil, was studied for the first time. The essential oil of the leaf was obtained by hydrodistillation and analyzed by GC/MS. The analytical procedure revealed a predominance of sesquiterpenes, δ-cadinene (7.39%), β-sesquiphellandrene (6.67%), β-elemene (5.41%) and α-cadinol (5,23%). The essential oil was submitted to brine shrimp toxicity evaluation, antioxidant and antibacterial tests. The antioxidant activity by the formation of phosphomolybdenum complex method presented positive results. The minimum inhibitory concentration (MIC) values were higher than 1000 μg/mL for the microorganisms tested. Toxicity activity revealed LC50 results of 40.10 (μg/mL), being toxic to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocotea bicolor/Oil essential/chemical composition; Lauraceae; Antioxidant activity; Biological activity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000400615 |
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| Fabri,Natasha Tiemi; Gatto,Larissa Junqueira; Furusho,Alethéia Santos; Garcia,Meira Janette Ballestros; Marques,Francisco de Assis; Miguel,Marilis Dallarmi; Montrucchio,Deise Prehs; Zanin,Sandra Maria Warumby; Miguel,Obdulio Gomes; Dias,Josiane de Fátima Gaspari. |
| The article has aimed to characterize the essential oil extracted from Ocotea diospyrifolia (Meisn.) Mez. leaves, in terms of its chemical composition and antioxidant, hemolytic, and phytotoxic potentials, as well as its toxicity against Artemia salina. The major constituents identified by CG-MS were d-elemene, spathulenol, and b-atlantol. When screened for potential biological activities, the essential oil presented low toxicity against Artemia salina, and a capacity of lysing red blood cells. Also, the evaluation of its in vitro antioxidant activity, using the phosphomolybdenum method, showed better results when compared to butylhydroxytoluene (BHT) and rutin. In conclusion, the results obtained showed certain in vitro toxicity, leading to an interesting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ocotea diospyrifolia; Lauraceae; Spathulenol; Antioxidant; Toxicity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100593 |
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| Avello Lorca,Marcia; López Canales,Carolina; Gatica Valenzuela,Carlos; Bustos Concha,Evelyn; Brieva Chait,Alejandra; Pastene Navarrete,Edgar; Bittner Berner,Magalis. |
| Introducción: las familias Lauraceae y Atherospermataceae son fuentes importantes de aceites esenciales, en los que se ha observado actividad frente a microorganismos. Este estudio se realizó en las especies chilenas: Cryptocarya alba Looser (Peumo), Persea lingue (Ruiz & Pav.) Nees (Lingue) de la familia Lauraceae y Laurelia sempervirens (Ruiz & Pav.) Tul. (laurel chileno) de la familia Atherospermataceae. De estas solo se conocen antecedentes morfológicos y usos populares, sin presentar estudios acabados sobre la composición química ni la actividad biológica. Objetivo: evaluar la actividad de sus aceites esenciales frente a microorganismos y aportar antecedentes de su composición química. Métodos: las muestras se recolectaron en la región... |
| Tipo: Journal article |
Palavras-chave: Lauraceae; Atherospermataceae; Especies chilenas; Aceites esenciales; Actividad antifúngica; Actividad antibacteriana. |
| Ano: 2012 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962012000100008 |
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| Lima,Maria da Paz; Silva,Tatiana Maria D.; Silva,João Domingos da; Zoghbi,Maria das Graças B.; Andrade,Eloisa Helena A.. |
| The essential oil of the leaves and fine stems of Aniba canelilla (Kunth) Mez collected in the city of Manaus, AM, Brazil, were obtained by hydrodistillation and analyzed by GC/MS. Forty-two components were identified, of which 1-nitro-2-phenylethane, as expected, was the major (71.2%-68.2%). |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Aniba canelilla; Lauraceae; Essential oil composition; 1-nitro-2-phenylethane. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672004000200019 |
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| Moraes,Pedro Luís Rodrigues de; Derbyshire,Maria Teresa Vitral de Carvalho. |
| Pela análise de 39 locos isoenzimáticos polimórficos, estimaram-se as freqüências alélicas referentes a 267 indivíduos de 12 populações naturais de Cryptocarya aschersoniana provenientes de Florestas de Planalto do estado de São Paulo e sul de Minas Gerais, Brasil. Foram obtidas estimativas das estatísticas F de Wright pelo método da análise da variância para estimação não viesada dos parâmetros correspondentes F=F IT, θ P =F ST e f=F IS. Os valores médios obtidos de F^ resultaram em 0,552 < 0,415 < 0,275; os de θ^P foram 0,395 < 0,335 < 0,279; e os de f^ sendo 0,292 < 0,119 < -0,039. Esses resultados indicaram que os indivíduos dentro das populações devem ser panmíticos e que a diversidade entre populações foi bastante alta, sendo... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alozimas; Lauraceae; Estrutura genética; Neotrópico; Cryptocarya aschersoniana; Mata de Planalto; Brasil. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032002000200011 |
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| Krügel,Marilise M.; Burger,Maria Inês; Alves,Marco A.. |
| A importância dos frutos de Lauraceae tem sido relatada na dieta de muitas aves, principalmente das famílias Ramphastidae, Cotingidae e Trogonidae. Os objetivos deste estudo foram determinar quais espécies de aves consomem os frutos de Nectandra megapotamica (Spreng.) Mez (Lauraceae) numa área de Floresta Estacional Decidual e, com base na análise de alguns dos componentes qualitativos e quantitativos da dispersão, inferir quais aves podem atuar como dispersores de suas sementes. O estudo foi desenvolvido no Campo de Instrução de Santa Maria (CISM) (29º43'S, 53º42'W), município de Santa Maria, Rio Grande do Sul. Num total de 70 h de observação focal, foram registradas 726 visitas de 21 espécies de aves. As aves consideradas como potencialmente dispersoras... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nectandra megapotamica; Lauraceae; Frugivoria; Aves; Floresta Estacional Decidual. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212006000100003 |
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| SANTA-CATARINA,CLAUDETE; MACIEL,SCHEILA DA CONCEIÇÃO; PEDROTTI,ENIO LUIZ. |
| Embriões zigóticos em diferentes estádios de desenvolvimento foram utilizados para avaliar o potencial de germinação e competência embriogênica in vitro. Frutos coletados entre 15 e 360 dias após a antese foram avaliados em relação ao diâmetro (mm), comprimento (mm) e massa fresca (g). Para avaliar a percentagem de germinação in vitro, embriões zigóticos em diferentes estádios de desenvolvimento foram inoculados em meio de cultura composto de sais minerais de Murashigue & Skoog (MS), ou em meio MS suplementado com 4,4 miM de BAP, sacarose (3%), ágar (0,6%), carvão ativado (0,15%). Para a indução de embriogênese somática, eixos embrionários em diferentes estádios de desenvolvimento foram inoculados em meio de cultura MS, suplementado com 2,4-D (0,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zygotic embryos; Somatic embryogenesis; In vitro germination; Woody plant; Lauraceae. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042001000500004 |
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| Uribe,Matilde; Sandoval,Marian; Méndez,Amado; Mora,Freddy; Delaveau,Catherine. |
| Beilschmiedia berteroana ("belloto del sur") is a screrophyllous tree of the family Lauraceae that is endemic to the Central-South region of Chile. It is an endangered species; considered a second priority in the "Extinction Danger" category. This species is known for its timber, fruits and lots of mucilages, also has great potential for its size and ornamental evergreen foliage. This study had as a main objective to develop an in vitro rooting protocol of microshoots, obtained from the proliferation phase, by adding auxin: indole 3-butyric acid (IBA), naphthaleneacetic acid (NAA) and indole 3-acetic acid (IAA) in order to contribute to the recovery of the species. Results are discussed in the rooting phase, where this species is induced or maintained in... |
| Tipo: Journal article |
Palavras-chave: Auxin; Beilschmiedia berteroana; Endangered species; Lauraceae. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000100010 |
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| Registros recuperados: 41 | |
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