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Contenido de carotenos en el follaje de Pinus caribaea Morelet y Pinus tropicalis Morelet
Rolando Quert álvarez,Benito Leyva Córdoba,Jorge M Martínez,Fisma Gelabert Ayón
Revista Cubana de Farmacia , 1997,
Abstract: Se realizó un análisis del material vegetal de las especies Pinus caribaea Morelet y Pinus tropicalis Morelet, con el objetivo de determinar su contenido de caroteno tomando como base las condiciones y tiempo de exposición del follaje de las especies objeto de estudio al sol y a la sombra, y teniendo en cuenta la extracción del aceite esencias como factores influyentes en la variación de las concentraciones de caroteno. Para determinar el contenido de caroteno se tomaron muestras del follaje entre 1 y 20 d, expuesto a las condiciones de trabajo en intervalos de 1, 3, 6, 10 y 20 d, tanto antes como después de extraer el aceite esencial. Los resultados obtenidos para ambas especies demostraron que el follaje expuesto a la sombra contiene un mayor porcentaje de caroteno que el expuesto al sol, como era de esperar; el tiempo de exposición influye significativamente en este contenido, así como la extracción del aceite esencial que aumenta el contenido de caroteno; los valores máximos fueron de 130,7 y 157,2 mg/kg de follaje y los mínimos de 55,3 y 57,2 mg/kg de follaje para Pinus caribaea Morelet y Pinus tropicalis Morelet respectivamente. An analysis of the vegetable material from the species Pinus cariabaea Morelet and Pinus tropicalis Morelet was carried out and their content of carotene was determined taking as the basis the conditions and time of exposure of the foliage of the species studied to the sun and shade, and also taking into account the extraction of the essential oil as factors influencing on the variation of carotene concentrations. For the determination of the carotene content, samples of the foliage between 1 and 20 exposed to working conditions at intervals of 1, 3, 6, 10 and 20 d were taken, both before and after the extraction of the essential oil. Results obteined from both species showed that the foliage exposed to shade contains a higher percentage of carotene than the one exposed to the sun, as it was expected to be; the time of exposure influences in a significant way on the content of carotene, as well as the extraction of essential oil which increases the content of carotene; maximum values were 130.7 and 157.2 mg/Kg of foliage for Pinus Cariabaea Morelet and Pinus tropicalis Morelet, respectively.
Estimation of Above Ground Tree Biomass and Carbon of Pinus caribaea (Morelet)  [cached]
S.M.C.U.P. Subasinghe,G.B. Munasinghe
Journal of Tropical Forestry and Environment , 2011,
Abstract: Forests in Sri Lanka contribute to the mitigation of global climate change through sequestrating a net amount of carbon dioxide and also maintaining carbon stocks as forest biomass. This study was conducted using an empirical method to understand the biomass and stored carbon by forest plantations in Sri Lanka. Further, in this study, the possibility of predicting the above ground tree biomass and carbon of Pinus caribaea (Morelet) was investigated. A 27 year old P. caribaea plantation was selected from the Low Country Wet Zone in Sri Lanka and the data were collected using 0.05 ha sample plots. Without felling trees, a core sample was obtained from the stem and biomass and carbon of that sample was used to estimate the stem biomass and carbon through volume measurements. The canopy biomass and carbon were estimated using samples of primary, secondary and tertiary branches and leaves. The total above ground tree biomass and carbon were estimated by adding the stem and canopy values together. It was found that, for 27 year old P. caribaea, the average above ground tree biomass was 368.9 kg and the carbon was 215.9 kg which is 58.5% from the biomass. The amount of carbon in the canopy was 64.5% from the canopy dry mass. The carbon percentages of the primary, secondary and tertiary branches and leaves were 61.7, 59.1 and 79.6 respectively. The total above ground tree carbon for a 27 year old P. caribaea plantation was 103.6 T ha-1. Then regression models were developed to identify the relationships of biomass and carbon with stem volume. A relationship between biomass and carbon was also developed for the selected species. Finally, mathematical models were developed to predict biomass and carbon using some other tree variables such as diameter and height, without felling the trees.
Estimation of Above Ground Tree Biomass and Carbon of Pinus caribaea (Morelet)  [cached]
S.M.C.U.P. Subasinghe,G.B. Munasinghe
Journal of Tropical Forestry and Environment , 2011,
Abstract: Forests in Sri Lanka contribute to the mitigation of global climate change through sequestrating a net amount of carbon dioxide and also maintaining carbon stocks as forest biomass. This study was conducted using an empirical method to understand the biomass and stored carbon by forest plantations in Sri Lanka. Further, in this study, the possibility of predicting the above ground tree biomass and carbon of Pinus caribaea (Morelet) was investigated. A 27 year old P. caribaea plantation was selected from the Low Country Wet Zone in Sri Lanka and the data were collected using 0.05 ha sample plots. Without felling trees, a core sample was obtained from the stem and biomass and carbon of that sample was used to estimate the stem biomass and carbon through volume measurements. The canopy biomass and carbon were estimated using samples of primary, secondary and tertiary branches and leaves. The total above ground tree biomass and carbon were estimated by adding the stem and canopy values together.It was found that, for 27 year old P. caribaea, the average above ground tree biomass was 368.9 kg and the carbon was 215.9 kg which is 58.5% from the biomass. The amount of carbon in the canopy was 64.5% from the canopy dry mass. The carbon percentages of the primary, secondary and tertiary branches and leaves were 61.7, 59.1 and 79.6 respectively. The total above ground tree carbon for a 27 year old P. caribaea plantation was 103.6 T ha-1. Then regression models were developed to identify the relationships of biomass and carbon with stem volume. A relationship between biomass and carbon was also developed for the selected species. Finally, mathematical models were developed to predict biomass and carbon using some other tree variables such as diameter and height, without felling the trees.
Toxicidad de un extracto tánico de Pinus caribaea Morelet
Vega Montalvo,Raiza; Lagarto Parra,Alicia; García López,Arilia; Piloto Ferrer,Janet; Santana Romero,Jorge L.; Gabilondo Ramírez,Tatiana;
Revista Cubana de Plantas Medicinales , 2005,
Abstract: acute oral, dermal and toxicogenetic toxicity of a spray dry-dried tanin powder from an aqueous extract of the wood of pinus caribaea morelet was determined. for all cases, wistar rats of both sexes weighing 150-200g were used. limit dose test and application of an occlusive patch on the skin for 24 hours determined the acute oral and dermal toxicities, respectively. the powder was administered at a dose of 2 000 mg/kg in both occasions. after 14 day-observation, the animals were killed to make autopsy and macroscopic test of organs and tissues. the toxicogenetic study was carried out in in vitro model called salmonella/microsome system(ames) and in vivo model, that is, the micronucleus induction test in the mouse bone marrow. in ames test, strains ta 100, ta 98, ta 1535 and ta 1537 of salmonella typhiumuriun with and without metabolic activation in the range of 50, 150, 500, 1 500 and 5 000 mg/plate concentrations were analyzed. doses of 500, 1 000 and 2 000 mg/kg of body weight were tested in the micronuclei induction test. it was proved that the spray dry-dried tanin powder obtained from an aqueous extract of the wood of pinus caribaea is not toxic by oral and dermal administration in the animals but it is genotoxic in vitro and in vivo. it will be advisable to perform other studies under different conditions so as to exactly determine the genotoxicity of this extract.
Biodistribución y farmacocinética de Taninos de Pinus caribaea Morelet y Casuarina equisetifolia en ratones
Santana Romero,Jorge Luis; Calderón Marín,Carlos Fabián; Martínez Luzardo,Francisco; Pérez,Rita María; Montalvo Duquesne,Marta; ávila Cabrera,Ana María; Codorniú Hernández,Edelsys;
Revista Cubana de Farmacia , 2002,
Abstract: biodistribution and pharmacokinetics of radioisotope-labeled and purified condensed tannins from pinus caribaea morelet var caribaea and casuarina equisetifolia barks were studied after they were orally and intravenously administered to mice which served as biomodels. the studied tannins, known as strong antioxidants and protein complex ligands, showed a rapid biodistribution into several organs and tissues. accumulation of these substances in the stomach and intestines was significant. tannins from both species described a biodistribution that adapted to a biocompartimental model of distribution. pharmacokinetic parameters such as mean residence time, total clearance, area under the curve, bioavailability and the moment when the maximum incorporation occurs were estimated from the blood clearance curves.
Determinación de vitamina (a -Tocoferol) en Pinus Caribaea Morelet y Eucalyptus SP.
Bécquer Romagosa,Clara; Quert Alvarez,Rolando; Casti?eira Díaz,Mirta; Capote Hernández,Raúl;
Revista Cubana de Farmacia , 1996,
Abstract: a fast methods of thin layer chromatography for the qualitative and quantitative determination of vitamine e (a -tocopherol) in samples of pinus caribaea morelet and eucalyptus sp. is presented. the ethereal extracts were chromatographied in plates preelaborated with silica gel, for which chloroform was used as a mobile phase. quantification was carried out by densitometric detection of the compound stains, using a computer controlled system in the modes of reflexion absorbability at a wave longitude of 280 nm. this paper is the first report about the presence of this substance in cuba. vitamin e has been found in concentrations of 177 and 2 400 mg/kg of dry drug in pine and eucalyptus respectively.
Biodistribución y farmacocinética de Taninos de Pinus caribaea Morelet y Casuarina equisetifolia en ratones  [cached]
Jorge Luis Santana Romero,Carlos Fabián Calderón Marín,Francisco Martínez Luzardo,Rita María Pérez
Revista Cubana de Farmacia , 2002,
Abstract: Se estudió la biodistribución y la farmacocinética de taninos condensados purificados y marcados radioisotópicamente, extraídos a partir de la corteza de las especies forestales Pinus caribaea Morelet var caribaea y Casuarina equisetifolia previa administración por vía oral y endovenosa, con el empleo de ratones como biomodelo. Los taninos estudiados, con una alta capacidad antioxidante y diferenciados por la propiedad de formar complejos con proteínas, presentaron una rápida biodistribución hacia los diferentes órganos y tejidos, con manifestaciones de un importante acúmulo en el estómago e intestinos. Los taninos de ambas especies describen una biodistribución que se ajusta a un modelo bicompartimental de distribución. Se reportan los parámetros farmacocinéticos como tiempo de residencia medio, aclaramiento total, área bajo la curva, biodisponibilidad e instante de tiempo en que ocurre la máxima incorporación a partir de las curvas del aclaramiento sanguíneo. Biodistribution and pharmacokinetics of radioisotope-labeled and purified condensed tannins from Pinus caribaea Morelet var caribaea and Casuarina equisetifolia barks were studied after they were orally and intravenously administered to mice which served as biomodels. The studied tannins, known as strong antioxidants and protein complex ligands, showed a rapid biodistribution into several organs and tissues. Accumulation of these substances in the stomach and intestines was significant. Tannins from both species described a biodistribution that adapted to a biocompartimental model of distribution. Pharmacokinetic parameters such as mean residence time, total clearance, area under the curve, bioavailability and the moment when the maximum incorporation occurs were estimated from the blood clearance curves.
Contenido de carotenos en el follaje de Pinus caribaea Morelet y Pinus tropicalis Morelet
Quert álvarez,Rolando; Leyva Córdoba,Benito; Martínez,Jorge M; Gelabert Ayón,Fisma;
Revista Cubana de Farmacia , 1997,
Abstract: an analysis of the vegetable material from the species pinus cariabaea morelet and pinus tropicalis morelet was carried out and their content of carotene was determined taking as the basis the conditions and time of exposure of the foliage of the species studied to the sun and shade, and also taking into account the extraction of the essential oil as factors influencing on the variation of carotene concentrations. for the determination of the carotene content, samples of the foliage between 1 and 20 exposed to working conditions at intervals of 1, 3, 6, 10 and 20 d were taken, both before and after the extraction of the essential oil. results obteined from both species showed that the foliage exposed to shade contains a higher percentage of carotene than the one exposed to the sun, as it was expected to be; the time of exposure influences in a significant way on the content of carotene, as well as the extraction of essential oil which increases the content of carotene; maximum values were 130.7 and 157.2 mg/kg of foliage for pinus cariabaea morelet and pinus tropicalis morelet, respectively.
Natural Regeneration and Biological Invasion by Pinus caribaea Morelet in Two Vereda Sites: Woody Vegetation Response  [PDF]
Danúbia Magalh?es Soares, André R. Terra Nascimento, Lorena Cunha Silva, Gast?o Viégas de Pinho Júnior
American Journal of Plant Sciences (AJPS) , 2015, DOI: 10.4236/ajps.2015.617272
Abstract: Veredas are regarded as humid complexes of ecological, water and scenery significance in Cerrado biome related to water table outcrop. Direct alterations in these environments can lead to species diversity reduction and also facilitate biological invasion processes. Thus our study aims to investigate the natural regeneration, the coverage of woody vegetation and the invasive species in two sites in secondary successional stage in the central part of Cerrado biome. Our study was carried out at two sites located at Minas Gerais state, Brazil. We established plots randomly throughout transects laid perpendicularly to the vereda’s drain line. We used the line intercept method to analyze the vegetation coverage. We set five 10-m width transects in each of both areas, perpendicular to the vereda’s drain line to evaluate the distribution of invasive alien species in the two areas. The richness did not vary between communities (U = 67.50; p = 0.061); on the other hand we found significant difference in density estimates (U = 36.50; p = 0.002). We found significant difference between categories for soil coverage in both sites. Grasses showed the highest coverage when compared to the other categories (K = 45.06; p < 0.001 for site 1 and K = 67.47; p < 0.001 for site 2). We observed a zonation tendency in site 1, with a higher native grass coverage at middle and backwards zones (K = 7.734, p < 0.05). We only found Pinus caribaea Morelet individuals in the invasive species survey. We recorded 46 Pinus caribaea individuals at site 1 and 116 Pinus caribaea individuals at site 2. From the latter group we found 13 individuals within the vereda and 103 in the surrounding vegetation. Both sites have a high natural woody plant regeneration potential although the presence of alien grasses in the veredas’ edge and Pinus caribaea all over the humidity gradient highlights the vulnerability of these areas to biological invasion.
Relación entre atributos ecofisiológicos de la especie vulnerable Pinus caribaea Morelet var. caribaea y características ambientales de ocho localidades en pinar del río, Cuba
García-Quintana,Yudel; Flores,Joel; Geada-López,Gretel; Escarré-Estévez,Antonio; Castillo-Martínez,Iris; Medina Malagón,Maribel;
Interciencia , 2009,
Abstract: pinus caribaea morelet var. caribaea barret & golfari is a vulnerable species due to extraction and habitat fragmentation. in pinar del río, cuba, natural populations occur in different soil types and climatic conditions. a study of eight populations (cajálbana, marbajita, la güira, la jagua, galalón, vi?ales, pinar del río and sabanalamar) was conducted to characterize ecophysiology traits in relation with climate and soil. for each population, water potential and transpiration, as well as 17 soil variables were measured. photosynthesis rate was also evaluated in one locality. results showed that pinus caribaea var. caribaea grows in a broad spectrum of environments. a better stomatal control was detected at 16:00 hs. localities were classified according to their suitability for the growth of the species. in the least adequate locality, with sandy soils, low nutrients and water availability more water stress and less transpiration was detected. these results could be considered in management plans for this species, and thus help its conservation.
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