Chlorophylls
Mostrando 1-12 de 142 artigos, teses e dissertações.
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1. Nondestructive analysis of photosynthetic pigments in forage radish and vetch
ABSTRACT Chlorophylls and carotenoids are the main photosynthetic pigments in plants, and photosynthetic potential can be used to determine the nitrogen fixation or cycling capacity of cover crops. Therefore, this study quantified and compared the content of photosynthetic pigments in Raphanus sativus and Vicia sativa by using two different methods, namely t
Rev. Ceres. Publicado em: 2020-12
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2. GROWTH AND PHYSIOLOGICAL RESPONSES OF YERBA MATE SEEDLINGS AND MINI-CUTTINGS UNDER DROUGHT STRESS
ABSTRACT Yerba mate is a tree species whose natural distribution occurs in the countries of Argentina, Paraguay, and Brazil, where most of the plantations are concentrated. For the establishment of plantations seedlings are commonly used. But alternatively, there are ex vitro vegetative propagation techniques like mini-cuttings technology, which has the pote
CERNE. Publicado em: 2020-09
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3. Chlorophyll content in beet cv. Early Wonder under nitrogen fertilization
ABSTRACT This study aimed to evaluate the effects of doses of nitrogen fertilizer in association with types of basal dressing fertilizers on the physiological characteristics of beet cultivar Early Wonder in a protected environment. The experiment was conducted in safe environment at the Federal University of Campina Grande, using a randomized block design
Rev. Ceres. Publicado em: 02/12/2019
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4. Germination and biochemical changes in West Indian gherkin seeds under water stress at different temperatures
RESUMO As informações sobre os efeitos das condições climáticas na sobrevivência de espécies cultivadas em regiões semiáridas são imprescindíveis e, ainda, escassas, principalmente em se tratando de espécies rústicas como o maxixe (Cucumis anguria L.). Com isso, objetivou-se avaliar a germinação, crescimento e alterações bioquímicas em seme
Rev. Ciênc. Agron.. Publicado em: 04/07/2019
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5. Contents of Pigments and Activity of Antioxidant Enzymes in Rice Plants Pre-Treated with Sodium Nitroprusside and Exposed to Clomazone
RESUMO: O pré-tratamento das sementes de arroz com nitroprussiato de sódio (SNP) foi usado para investigar o efeito do óxido nítrico exógeno sobre o conteúdo de pigmentos e a atividade de enzimas antioxidantes durante a inibição da rota 2-C-metil-D-eritritol 4-fosfato (MEP), pelo herbicida clomazone. As sementes foram embebidas em solução de SNP (2
Planta daninha. Publicado em: 06/05/2019
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6. Metabolites of interest for food technology produced by microalgae from the Northeast Brazil
RESUMO Existe uma demanda por pesquisas prospectivas de microalgas isoladas da região Nordeste do Brasil que possam ser potencialmente importantes à indústria de alimentos. Nesta pesquisa foram avaliadas as características da cinética de crescimento sob condições controladas de cultivo (temperatura = 24 ± 1 ºC, iluminação 150 µmol fótons m-2 s-1
Rev. Ciênc. Agron.. Publicado em: 2019-03
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7. Estuary Adjacent to a Megalopolis as Potential Disrupter of Carbon and Nutrient Budgets in the Coastal Ocean
The goals were to estimate nutrients and carbon flow rates between Guanabara Bay and the adjacent coastal waters, to characterize the provenance of the exported/imported organic matter. Samples were collected from different depths over 25 h in two seasons at the bay entrance. Measurements included physicochemical parameters, nutrients, chlorophylls, dissolve
J. Braz. Chem. Soc.. Publicado em: 2016-10
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8. Enhancement of pigment extraction from B. braunii pretreated using CO2 rapid depressurization
Abstract Extraction of compounds from microalgae requires cell disruption as a pretreatment to increase extraction yield. Botryococcus braunii is a microalga with a significant content of carotenoids and other antioxidant compounds, such as chlorophylls. Cell disruption of B. braunii using CO2 rapid depressurization was studied as a pretreatment for the extr
Braz. J. Microbiol.. Publicado em: 2016-06
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9. Improvement of the Extraction Process for High Commercial Value Pigments from Desmodesmus sp. Microalgae
Considering the high interest and commercial value of pigments from microalgae, this study aimed to stablish the best lutein and β-carotene extraction method for Desmodesmus sp., a microalgae with high biomass production. The evaluation was done considering the best solvent or solvent mixture, number of extractions, pre-treatment of dry biomass with acetone
J. Braz. Chem. Soc.. Publicado em: 2016-06
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10. Post-harvest conservation of camu–camu fruits (Myrciaria dubia (Kunth) Mc Vaugh) using different temperatures and packages
Abstract The camu-camu tree (Myrciaria dubia (Kunth) Mc Vaugh) is fruit-bearing tree belonging to the family Myrtaceae. This work was conducted with the purpose of evaluating the type of storage temperature and package which allow better conservation of the quality attributes of camu-camu. The experimental design utilized was the completely randomized with t
Food Sci. Technol. Publicado em: 2015-12
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11. Magnesium-induced alterations in the photosynthetic performance and resistance of rice plants infected with Bipolaris oryzae
Brown spot (BS), caused by the fungus Bipolaris oryzae, is one of the most important diseases contracted by rice. We investigated the effect of magnesium (Mg) on the development of BS, caused by Bipolaris oryzae, and the effects of disease development on the photosynthetic performance of rice (Oryza sativa L.) plants (cv. Metica-1) grown in nutrient solution
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-08
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12. Composição química dos grãos e da cera foliar de variedade Glycine max (L.) Merrill cv. MG/ BR-46 Conquista cultivada sob atmosfera enriquecida de gás carbônico e temperatura elevada
The concentration of carbon dioxide (CO2) has increased in the last decades, due mainly to the combustion of fossil fuels. A gradual increase of the global temperature is expected as a consequence. Soybean is an important crop in most countries, being consumed either as human or domestic animals food. The present work is composed of two chapters, the first d
Publicado em: 07/02/2014