oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Search Results: 1 - 10 of 91 matches for " elaeis guineensis "
All listed articles are free for downloading (OA Articles)
Page 1 /91
Display every page Item
Tolerancia de sementes de dendezeiro à criopreserva??o
Camillo, Julcéia;Luis, Zanderluce Gomes;Scherwinski-Pereira, Jonny Everson;
Pesquisa Agropecuária Brasileira , 2009, DOI: 10.1590/S0100-204X2009000200015
Abstract: the aim of this work was to evaluate the oil palm (elaeis guineensis) seed tolerance to cryopreservation. five genotypes (cm589, c7201, c2528, c2001, and c2501) were evaluated with or without exposure to liquid nitrogen for seven days. treatments were replicated three times with ten seeds per replicate. serial anatomical cuts were made to compare the effect of treatments on zygotic embryos. for cm589 and c2528, the exposition to liquid nitrogen accelerated and increased seed germination, respectively. for c2501, liquid nitrogen had no effect. for c7201, liquid nitrogen reduced seed germination (90.7%) compared to the check (100%). anatomically, the liquid nitrogen did not interfere with embryonic tissue differentiation or development during germination.
The Study of the Characteristics and Rancidity of Three Species of Elaeis guineensis in South East of Nigeria
P.C. Njoku,J.C. Onwu
Pakistan Journal of Nutrition , 2010,
Abstract: Palm Oil (Elaeis guineensis) samples were extracted by two methods of extraction, cold (Eketeke) and normal. The palm oil samples extracted by cold method (Eketeke) have significantly low mean values of peroxide 2.30 (meg/kg), free fatty acid 0.12 mg/KOH/g, acid 0.19 mgKOH/g and with high iodine value 47.2 mg/KOH/g. Whereas normal method have considerable high mean values of peroxide 2.5 (meg/kg), free fatty acid, 0.23 mg/KOH/g, acid 0.16 mg/g and with low iodine value of 45.7 mg/KOH/g. The acid values of all the oil samples are not higher than 0.6 mg/g recommended for most vegetable oils in Nigeria. Steady increase of peroxide values of oils leads to rancidity. The GLC result showed that oil sample A1 (Eketeke) at 100oC was a mixture of unsaturated (47.56%) and saturated (43.85%) fatty acid. Whereas oil sample B at 100oC was a mixture of unsaturated (49.82%) and saturated (50.17%) fatty acid. Also sample C at 100oC was a mixture of unsaturated (45.2%) and saturated (54.80%) fatty acid.
Proliferation of Microorganisms in Acidic Fermentation of Elaeis guineensis L. Waste  [PDF]
M. Adedolapo Orimoloye, A. Isaac Sanusi
Advances in Microbiology (AiM) , 2016, DOI: 10.4236/aim.2016.69063
Abstract: An investigation into the type of fermentation oil palm fruit waste undergoes and the probable microorganisms involved within a short period was carried out using simple fermenter. The temperature was determined using mercury thermometer, the pH of the medium was monitored with calibrated pH meter and the titratable acidic was determined using standard technique. The microbial profile of the medium was also evaluated using standard procedures. The highest temperature value was observed at day 0 (32.65°C) and the lowest at day 1 (29.50°C). The pH values of the fermentation oil palm fruit waste ranged between 4.15 - 4.60. The highest pH value was obtained at day 3 of the fermentation which was 4.60. The titratable acidity showed variation from day 0 - 2 and then with a continuous decrease till day 5. The least titratable acidity was obtained at day 5 (0.03) and the highest at day 2 (0.77). Bacteria load decreases from 1.0 × 108 - 1.6 × 107 cfu/ml, while the fungi population increases from day 0 to day 5 of the fermentation period (1 × 103 - 2 × 104 sfu/ml). Bacterial isolates obtained were Micrococcus leteus, Proteus vulgaris, Bacillus cereus, Baccillus subtilis, and Staphylococcus aureus while the fungal isolates obtained were Aspergillus niger, Neurospora crassa, Brachysporium spp,
Repetibilidade da produ??o de cachos de híbridos interespecíficos entre o caiaué e o dendezeiro
Chia, Gilson Sánchez;Lopes, Ricardo;Cunha, Raimundo Nonato Vieira da;Rocha, Raimundo Nonato Carvalho da;Lopes, Maria Teresa Gomes;
Acta Amazonica , 2009, DOI: 10.1590/S0044-59672009000200001
Abstract: interspecific hybridization between the caiaué (elaeis oleífera (kunth) cortés) and the african oil palm (e. guineensis jacq.) has been exploited with the objective of developing varieties as productive as african oil palm and with the pest and disease resistance, reduced height and high levels of insaturated oils characteristic of the caiaué. perennial crops with long production cycles and high costs for maintenance and evaluation of improvement experiments require definition of minimum evaluation periods for efficient and low cost selection of hybrids. this study estimated the repeatability coefficients of the characters bunch number, total weight of bunches and average bunch weight of interspecific hybrids and determined the number of consecutive years of evaluation required for efficient selection of the best crosses and individuals. the repeatability coefficients were estimated by four methods: analysis of variance, principal components based on the covariance (cpcv) and correlation matrix, and structural analysis based on the correlation matrix. the cpcv method was the most appropriate for the study of the repeatability of bunch production. four consecutive years of evaluation are required to select progenies, represented by ten plants, with determination coefficients (r2) up to 85%, and at least six consecutive years of evaluation are necessary to select individuals, with r2 up to 80%.
Germina??o in vitro de pólen de híbridos interespecíficos entre o caiaué e o dendezeiro
Chia, Gilson Sanchez;Lopes, Ricardo;Cunha, Raimundo Nonato Vieira da;Rocha, Raimundo Nonato Carvalho da;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009005000082
Abstract: the purpose of this study was to evaluate the in vitro pollen germination of interespecifics hybrids between caiaué and oil palm (varieties dura, tenera and pisifera). the percentage of pollen germination (ppg) of hybrids ranged from 54.8% to 58.3%. the averages of hybrids and caiaué (73.1%) did not differ statistically, but were lower than the oil palm (84.8%). the germination of pollen of hybrids is sufficient for the successful of crosses in interespecific breeding programmes between caiaué and oil palm.
Diagnóstico y evaluación de pestalotiopsis, e insectos inductores, en plantaciones de palma aceitera al sur del lago de Maracaibo, Venezuela Diagnosis and evaluation of pestalotiopsis, and insect vectors, in an oil palm plantation at the South of Maracaibo Lake, Venezuela
Marlyn Escalante,David Damas,Darwin Márquez,Wilmer Gelvez
Bioagro , 2010,
Abstract: La Pestalotiopsis o a ublo foliar es una afección severa de las plantaciones venezolanas de palma aceitera (Elaeis guineensis) que ocasiona importantes disminuciones en los rendimientos del cultivo. A fin de diagnosticar y evaluar esta afección y sus insectos inductores se tomaron quincenalmente muestras foliares y se registró la severidad de la enfermedad y abundancia de insectos en los estratos superior, medio e inferior del dosel, a la vez que las hojas evaluadas se dividieron en tercios (apical, medio y basal). Los géneros relacionados con la enfermedad fueron Pestalotiopsis y Curvularia y el insecto inductor en la zona fue Leptopharsa gibbicarina (Hemiptera:Tingidae). La enfermedad incrementa su severidad a medida que se desciende en el dosel, pero afecta por igual manera a toda la hoja. Las poblaciones de L. gibbicarina fueron más abundantes en los estratos medio e inferior de la planta. Se desarrolló un modelo que explica el comportamiento de la enfermedad. Los resultados de este trabajo pueden servir de fuente para el dise o de estrategias de manejo de este complejo de hongos, basadas principalmente en el manejo integrado del insecto inductor, asegurando así soluciones estables en el tiempo. The Pestalotiopsis or gray leaf blight is a severe disease in Venezuelan plantations of oil palm (Elaeis guineensis) that causes important yield losses. In order to diagnose and evaluate the severity of the disease and the abundance of inductive insects, foliar samples coming from the upper, medium and lower portions of the canopy were taken each other week. For the evaluation, apical, media and basal part of the leaves were considered. The fungal genera related to the disease were Pestalotiopsis and Curvularia, and the inductive insect in the zone was Leptopharsa gibbicarina (Hemiptera: Tingidae). The disease increased its severity as it descended in the canopy, but equally affected any part of the leaf. The populations of L. gibbicarina were more abundant in the medium and lower portion of the plant canopy. A model that explains the behavior of the disease was developed. These results may be useful to design strategies of management of this fungi complex, mainly based in the integrated management of the inductive insect, thus assuring stable solutions in time.
PIGMENTOS CAROTENOIDES IDENTIFICADOS Y PURIFICADOS EN ACEITE DE PALMA
Salinas,Nancy; Pacheco-Delahaye,Emperatriz;
Agronomía Tropical , 2003,
Abstract: el aceite de palma, elaeis guineensis, crudo es un alimento graso rico en carotenoides principalmente el ? -caroteno y a -caroteno, los cuales le proporcionan una fortaleza nutricional, ya que estos pigmentos son precursores de la vitamina a y están directamente relacionados con sus propiedades protectoras contra el da?o de los radicales libres. sin embargo, este aceite es refinado para su posterior consumo trayendo como consecuencia una pérdida de sus propiedades. en este trabajo se aplicaron técnicas para extraer, purificar, identificar y cuantificar algunos pigmentos carotenoides presentes en el aceite de palma crudo, pretratado y refinado; con la finalidad de realizar un posterior estudio de los factores más preponderantes en el proceso de refinación, que puedan ser optimizados para obtener un aceite con mayores cualidades nutricionales. las técnicas cromatográficas empleadas fueron: cromatografía en capa fina (tlc) y cromatografía líquida de alta resolución (hplc) en fase reversa, previa saponificación con koh metanólico, del aceite disuelto en acetona. fueron identificados los pigmentos: ? -caroteno y sus isomeros, a -caroteno, luteína y licopeno en el aceite crudo pretratado. en el caso del aceite refinado no se observó la presencia de ningún pigmento carotenoide. fueron cuantificados el ? -caroteno y sus isómeros: 1 158,198 mg kg-1; luteína y sus ?someros: 42,819 mg kg-1; y licopeno: 14,179 mg kg-1.
Diagnóstico y evaluación de pestalotiopsis, e insectos inductores, en plantaciones de palma aceitera al sur del lago de Maracaibo, Venezuela
Escalante,Marlyn; Damas,David; Márquez,Darwin; Gelvez,Wilmer; Chacón,Hernando; Díaz,Asdrúbal; Moreno,Bridget;
Bioagro , 2010,
Abstract: the pestalotiopsis or gray leaf blight is a severe disease in venezuelan plantations of oil palm (elaeis guineensis) that causes important yield losses. in order to diagnose and evaluate the severity of the disease and the abundance of inductive insects, foliar samples coming from the upper, medium and lower portions of the canopy were taken each other week. for the evaluation, apical, media and basal part of the leaves were considered. the fungal genera related to the disease were pestalotiopsis and curvularia, and the inductive insect in the zone was leptopharsa gibbicarina (hemiptera: tingidae). the disease increased its severity as it descended in the canopy, but equally affected any part of the leaf. the populations of l. gibbicarina were more abundant in the medium and lower portion of the plant canopy. a model that explains the behavior of the disease was developed. these results may be useful to design strategies of management of this fungi complex, mainly based in the integrated management of the inductive insect, thus assuring stable solutions in time.
Efecto de los restos de la industrialización de la palma aceitera sobre las etapas de crecimiento y reproducción de la lombriz roja (Eisenia andrei)
Hernández,J.A.; Contreras,C; Palma,R; Faria,A; Pietrosemoli,S;
Revista de la Facultad de Agronomía , 2006,
Abstract: eleven mixtures of oil palms industrial wastes were prepared: peels (c) and fiber (f), with cattle manure (eb) in proportions of 0, 20, 40, 60, 80 and 100%. 100% eb was used as a control. the aim of the research was to evaluate the effect of these substrates on the growth and the reproduction of the earthworm. ten earthworms were used (51.0 ± 2.23 mg) per container of 750cc, containing 100 g of the mix in dry base. for 10 days the biomass was registered weekly plus the life's phase: juvenile, prechiltelleate, clitelleate and in regression, the total number of capsules/container, capsule's weight, the hatch percentage and the number of earthworms per capsule. a completely randomized design was used with four replications. passed the fourth week clitelleate earthworms were observed. all earthworms gained weight in all mixtures until week number six. statistical differences were found among the effects of the different substrates used, concluding that based on the analyzed variables, the best results correspond to the mixtures with fiber, that allows that the earthworms completes its life's cycle showing a good reproductive behavior. the best proportion of the mix was 60% f: 40% eb, registering the best percentage of clitelleate earthworms, 84%.
Collection of Oil Palm (Elaeis guineensis Jacq.) Germplasm in the Northern Regions of Ghana
E. Sapey,K. Adusei-Fosu,D. Agyei-Dwarko,G. Okyere-Boateng
Asian Journal of Agricultural Sciences , 2012,
Abstract: Oil palm germplasm collection was carried out in the Northern Regions of Ghana for evaluation, screening for drought tolerance and further incorporation into breeding programmes of Ghana’s Council for Scientific and Industrial Research (C.S.I.R)-Oil Palm Research Institute (O.P.R.I). The study highlights the collection of 22 oil palm (Elaeis guineensis) accessions from 5 locations in the Northern Regions of Ghana. The Northern Regions are not suitable for oil palm cultivation due to unfavourable weather conditions. Only Dura (D) forms of Oil palm were present without the existence of the other forms. The smallest shell thickness recorded was 1.6 mm. Data on stem height, bunch weight, bunch length, bunch depth, bunch diameter, bunch width, bunch spine length, bunch stalk weight, fruit length and width were recorded in-situ. Mesocarp, kernel and shell to fruit ratios were computed. Data collected were analysed using standard procedures; Elementary statistics (mean values, standard error, range and co-efficient of variation) were computed. Results revealed some variation for both qualitative and quantitative traits assessed on the accessions. Seedlings have been raised from these accessions for testing for drought screening and yield evaluation.
Page 1 /91
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.