Microelements
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Development of a Simple and Fast Procedure Based on Acid Dilution for Determination of Macro and Microelements in Guarana-Based Beverages by ICP OES
A simple analytical procedure is proposed for the direct analysis of guarana-based beverages in order to determine nutrient elements by inductively coupled plasma optical emission spectrometry (ICP OES). A Box-Behnken design, combined with Derringer’s desirability function, was applied to the simultaneous optimization of the ICP OES radiofrequency (RF), sa
J. Braz. Chem. Soc.. Publicado em: 2021-07
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2. VARIATIONS OF ELEMENT CONCENTRATIONS IN ROOTS OF DIFFERENT TREE SPECIES
ABSTRACT Element concentrations of roots play an important role for plant growth and below ground biochemical cycles in forest ecosystems. It can show a change among species. This research aimed to determine changes in the nutrient content for different root diameters of trees in the Belgrad forest. Natural species of Sessile oak (Quercus petraea L.), Scots
CERNE. Publicado em: 2020-03
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3. Changes in mineral nutrition during fruit growth and development of ‘Seike’ and ‘Newhall’ navel orange as a guide for fertilization
Resumo Mudanças nos padrões de acumulação de nutrientes minerais em diferentes estágios de desenvolvimento do fruto refletem as exigências de plantas cítricas para diferentes nutrientes, e essa informação fornece uma referência essencial para a fertilização racional. Neste estudo, mudanças no conteúdo de 11 nutrientes no fruto inteiro, na polp
Rev. Bras. Frutic.. Publicado em: 14/11/2019
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4. Arbuscular mycorrhizal fungi and auxin associated with microelements in the development of cuttings of Varronia leucocephala
RESUMO Varronia leucocephala é uma planta utilizada pela população para fins terapêuticos. Um dos maiores problemas para produção de mudas dessa espécie é o baixo percentual de enraizamento. Objetivou-se estabelecer um protocolo de enraizamento de estacas de V. leucocephala utilizando fitorreguladores e microelementos associados com fungos micorrízi
Rev. bras. eng. agríc. ambient.. Publicado em: 2019-03
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5. In vitro Monitoring of Macro and Microelements in Multimineral Preparations across Dissolution Profiles by Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES)
In this study, inductively coupled plasma optical emission spectrometry (ICP OES) was used for multi-element analysis in five multimineral preparations from a dissolution test, in accordance with the United States Pharmacopeia (USP 34 method): apparatus 1, 75 rpm and 900 mL of 0.1 mol L-1 HCl. Element releases in all samples (minimum-maximum in %) were: Ca (
J. Braz. Chem. Soc.. Publicado em: 2017-11
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6. The nutritional value of leaves of selected berry species
ABSTRACT: Although the medicinal properties of berry fruit are well known, there is relatively little information available concerning the applications of other parts of berry plants. Thus, in this study we determined the nutritional value of the leaves of selected berry species and their possible application in health promoting diets. The levels of nutrient
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-10
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7. Effect of baru (Dipteryx alata Vog.) addition on the composition and nutritional quality of cookies
Abstract The use of the defatted baru almond (Dipteryx alata Vog.) prevents the production of waste residues after extraction of its oil (partially defatted baru flour), representing a process of interest from an environmental point of view. The aim of this study was to prepare oat cookies with functional properties, replacing 100% soy oil for baru oil and 3
Food Sci. Technol. Publicado em: 29/05/2017
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8. The uptake of different iron salts by the yeast Saccharomyces cerevisiae
Yeasts can be enriched with microelements, including iron; however, special physicochemical conditions are required to formulate a culture media that promotes both yeast growth and iron uptake. Different iron sources do not affect biomass formation; however, considering efficacy, cost, stability, and compatibility with Saccharomyces cerevisiae metabolism, fe
Braz. J. Microbiol.. Publicado em: 2014-06
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9. Análisis de suelo y foliar en guanábano (Annonamuricata L.) en blanca espuma municipio de Alto Lucero, Veracruz
This study was conducted in a seven years old plantation. Soil and foliar analyzes were performed to determine the physical and chemical characteristics of the soil and the nutrient status of the tree for two climatic seasons (dry and wet). In each of these eight samples were obtained from soil at a depth of 0 to 30 cm, which were mixed to obtain two compoun
Rev. Bras. Frutic.. Publicado em: 2014
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10. Relationship between Paratuberculosis and the microelements Copper, Zinc, Iron, Selenium and Molybdenum in Beef Cattle
To study the deficiency of minerals and its relationship with Paratuberculosis, blood, serum, and fecal samples were obtained from 75 adult bovines without clinical symptoms of the disease and from two bovines with clinical symptoms of the disease, from two beef herds with a previous history of Paratuberculosis in the Province of Buenos Aires, Argentina. Ser
Braz. J. Microbiol.. Publicado em: 17/05/2013
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11. Variação estacional de Brachiaria decumbens stapf sob adubação nitrogenada e micronutrientes.
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Seropédica: EMBRAPA-CNPAB. Publicado em: 2011
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12. Caracterizacao qualitativa e quantitativa de elementos, pela tecnica de fluorescencia de raios X, em suplementos minerais para animais. I. Dispersao de comprimento de onda.
Pela tecnica analitica instrumental de fluorescencia de raios X por dispersao de comprimento de onda (WD-XRF), com a utilizacao de um tubo de raios X com alvo de Rh (40Kv, 30mA) e detectores e fluxo gasoso e cintilador solido de Nal(TI), foi adaptado um metodo para a determinacao da concentracao dos microelementos Mn, Fe, Co, Cu e Zn em suplementos minerais
Pesquisa Agropecuaria Brasileira. Publicado em: 2011