Extractive Solution
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Extratos de Lilium sp., Agapanthus sp. e Hydrangea sp.: comportamento como indicadores naturais em diferentes faixas de pH
This experimental activity proposes the use of lily (Lilium sp.), agapanthus (Agapanthus sp.) and hydrangea (Hydrangea sp.) extracts to investigate the colorimetric profile of each extract between pH 1-14. Water, ethanol and ethanol/HCl 1% (w/w) were used as extractive solvents. Among the flowers tested, the extracts of orange lily and burnt yellow lily were
Quím. Nova. Publicado em: 2020-02
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2. Development of standardized extractive solution from Lippia sidoides by factorial design and their redox active profile
AbstractThe aim of this study was to evaluate the influences of variables of preparation on total flavonoids content from extractive solution of Lippia sidoides Cham., Verbenaceae. Thus a 23 factorial design was used to study the importance of plant proportion, the extraction method and solvent on the extraction of flavonoid. The methodology of determination
Rev. bras. farmacogn.. Publicado em: 2015-06
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3. Technological development of aqueous extracts from Calycophyllum spruceanum (Benth.) Hook. f. ex K. Schum., Rubiaceae, (mulateiro) using factorial design
The aim of the present work is to characterize the vegetal raw material of the Calycophyllum spruceanum (Benth.) Hook. f. ex K. Schum., Rubiaceae, known as "mulateiro", and to evaluate the influence of extractive parameters for attainment of standardized aqueous extractive solutions. The physical-chemical characterization of the samples was performed using p
Revista Brasileira de Farmacognosia. Publicado em: 04/03/2011
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4. Planejamento experimental na otimização da extração dos frutos de Syzygium cumini (L.) skeels
The aim of this study was to standardize the extractive solution of Syzygium cumini. The extractive solution was selected through a full factorial design, considering the extraction method (maceration-5-days, turbo extraction, percolation), extractor solvent (ethanol 50, 70, 96%) and plant material particle size 0.302 mm into a plant:solvent ratio (1:10), us
Química Nova. Publicado em: 2011
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5. Ion pair-dispersive liquid-liquid microextraction of trace amount of rhodium ion in water and road dust samples prior to flame atomic absorption spectrometry determination
A simple ion pair-dispersive liquid-liquid microextraction method was proposed for preconcentration trace amounts of rhodium. An ion association complex of RhCl4- and tetradecyldimetylbenzylamonium was extracted into cholorobenzene. The volume and the type of extractive and dispersive solvents, the extraction time and the pH of the aqueous solutions were opt
Química Nova. Publicado em: 2011
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6. Nanoemulsões contendo solução extrativa de achyrocline satureioides : formulação, permeação cutânea e atividade antioxidante
Diversos estudos têm demonstrado a atividade antioxidante de extratos de Achyrocline satureioides. Essa atividade tem sido atribuída à presença de compostos flavonoídicos, em especial, da quercetina. Neste contexto, o objetivo da presente dissertação foi desenvolver nanoemulsões de uso tópico contendo o extrato deste vegetal, bem com o flavonóide q
Publicado em: 2011
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7. Avaliação da redução da carga microbiana de droga vegetal através do processamento tecnológico : decocção e secagem por aspersão
As plantas medicinais podem representar importantes alternativas terapêuticas. No entanto, para elaboração de um fi toterápico a contaminação microbiana constitui um problema a ser vencido. O processamento tecnológico da matéria-prima envolve etapas, geralmente, desfavoráveis à sobrevivência de microrganismos, sendo sua eliminação dependente da
Publicado em: 2010
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8. Processing of Rosmarinus officinalis linne extract on spray and spouted bed dryers
This article presents an investigation of the potential of spray and spouted bed technology for the production of dried extracts of Rosmarinus officinalis Linné, popularly known as rosemary. The extractive solution was characterized by loss on drying, extractable matter and total phenolic and flavonoid compounds (chemical markers). The product was character
Brazilian Journal of Chemical Engineering. Publicado em: 2008-03
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9. Influence of termotreatment in the chemical composition of the wood of amburana (Amburana cearensis), bálsamo (Myroxylon balsamum) and oak (Quercus sp.) and their impact in the aroma of a cachaça´s solution model / Influência do termotratamento na composição química da madeira de amburana (Amburana cearensis), bálsamo (Myroxylon balsamum) e carvalho (Quercus sp.) e o impacto no aroma de uma solução modelo de cachaça
Neste trabalho foi avaliado o efeito do termotratamento na composição química de madeiras utilizadas na confecção de tonéis e o impacto no aroma de uma solução modelo de cachaça, que apresentasse características físico-químicas desta bebida. As madeiras foram avaliadas quanto à composição química em suas formas original e termotratada. Extrat
Publicado em: 2006
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10. Avaliação dos métodos de extração sequencial de Tessier, Keller e Miller na determinação de ferro nativo em três tipos de solos: orgânico, brunizem e latossolo
Sequential extraction is not totally effective to dissolve distinct forms of trace elements. The extractive solution, for example, can dissolve less of the target fraction and more than another not wished fraction. The goal of this work is to compare the extraction of native iron with three sequential extraction methods of the heavy metals, using three soils
Química Nova. Publicado em: 2003-05
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11. Fração histonica nuclear rica em histona H5 : isolamento, caracterização, orientação macromolecular e interação com DNA
This thesis deals with structural aspects of an H IND. 5 histone rich fraction ( H IND. 5 RF), as well as its importance in the chromatin structure. H IND. 5 RF was extracted from chicken erythrocyte nuclei. Some intrinsic characteristics of H IND. 5 RF a few differenciating qualities in relation to the H IND. 1 histone of the calf thymus were determined by
Publicado em: 1983