Enzymic Activity
Mostrando 1-12 de 245 artigos, teses e dissertações.
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1. Indicadores biológicos em solos de propriedades rurais sob plantio direto e convencional na região de Rio Verde-GO.
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Planaltina. Publicado em: 2011
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2. Propriedades biologicas em agregados de um LE sob plantios convencional e direto no Cerrado.
2002
Planaltina. Publicado em: 2011
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3. Uso de parâmetros microbiológicos como indicadores para avaliar a qualidade do solo e a sustentabilidade dos agroecossistemas.
ABSTRACT: Every factor that has a negative impact on soil microorganisms sooner or later will reflect in a deterioration of soil chemical and physical properties specially, those related to soil organic matter losses. This paper was based on a talk presented at "The International Symposium of Indicators of Soil Quality" held on Marco Juarez-Argentina. Some o
Planaltina. Publicado em: 2011
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4. Comportamiento de glicinina, b-conglicinina y a-amilasa en semillas de soja deterioradas y no deterioradas
- El objetivo del trabajo fue estudiar el comportamiento de glicinina y b-conglicinina y la actividad de a-amilasa en semillas deterioradas y no deterioradas de 10 cultivares de soja [Glycine max (L.) Merr.]. Las semillas se sometieron a dos tratamientos: deterioradas por envejecimiento acelerado y no deterioradas. Se determinó la presencia de las proteína
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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5. Caracterização bioquímica e cinética de lipoxigenases de plantas de soja submetidas à aplicação de ácidos graxos poliinsaturados.
O objetivo deste trabalho foi avaliar a capacidade da planta de soja em responder à aplicação de ácidos graxos, substratos das lipoxigenases, pela "via das lipoxigenases" por meio da caracterização bioquímica e cinética do "pool" das lipoxigenases foliares. Dois genótipos de soja foram usados: um normal (variedade IAC-100) e outro desprovido das tr�
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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6. Influence of chromium salts on increased lipid peroxidation and differential pattern in antioxidant metabolism in Pistia stratiotes L
In this work, the changing effect of different concentrations (0, 0.01, 0.1, 1, 10mM) of hexavalent and trivalent chromium on different biochemical parameters along with antioxidant enzymes was investigated on water lettuce (Pistia stratiotes L.) in order to know the possible involvement of this metal in oxidative injury, besides the activities of antioxidan
Brazilian Archives of Biology and Technology. Publicado em: 2010-10
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7. Biossensor enzimático para detecção de fungicidas ditiocarbamatos: estudo cinético da enzima aldeído desidrogenase e otimização do biossensor
Initially, all major factors that affect the rate of the AldH-catalyzed reaction (enzyme concentration, substrate concentration, temperature and pH) were investigated. Optimal activity was observed between pH values of 7.5 and 9.5 in the temperature range of 25 to 50 ºC. Kinetic parameters, such as Km (2.92 µmol L-1) and Vmax (1.33 10-2 µmol min-1) demons
Química Nova. Publicado em: 2007-02
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8. Estudo cinetico da invertase livre e imobilizada em alginato de calcio
In this work special emphasis was given to the study of the kinetics of sucrose hydrolysis by invertase. The enzyme was used in free as well immobilized in calcium alginate forms. The kinetic parameters ware determined considering the initial rates of reaction, in order to avoid the iinhibition phenomena caused by the products glucose and fructose. The pH an
Publicado em: 1989
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9. Ação de cobre e mercurio sobre estrutura nuclear e atividade de alguns sistemas enzimaticos em Triatoma infestans Klug
Changes in nuclear phenotypes were found in the Malpighian tubule cells of T. infestans after treatment with pollutant metaIs, (copper and mercury). They were detected in cytological preparations, obtained from incubation of the tubules in solutions containing the metallic ions or from injection of aqueous solutions of the metallic ions in the specimens, wit
Publicado em: 1984
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10. Mutations Affecting the Structure of Hypoxanthine: Guanine Phosphoribosyltransferase in Cultured Chinese Hamster Cells
14 Clones resistant to 8-azaguanine, isolated from mutagenically treated cultured cells from Chinese hamsters, were tested for loss of enzymic and immunological activities of hypoxanthine: guanine phosphoribosyltransferase. Three of the clones had no enzymic activity but reacted strongly with antiserum prepared against the enzyme (CRM+), indicating the prese
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11. Acetate kinase activity in mycoplasmas.
Acetate kinase activity was assayed in 13 mycoplasmas. Nine species exhibited the enzymic activity in the direction of either synthesis of acetylphosphate or adenosine triphosphate. On the other hand Mycoplasma orale, Mycoplasma arthritidis, Ureaplasma urealyticum (10 serotypes), and two strains of Anaeroplasma species exhibited only minimal levels of the en
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12. Legume α-Galactosidases Which Have Hemagglutinin Properties 1
Four legume species (four genera) were examined and found to contain hemagglutinins with properties similar to those which we have previously described for the enzymic hemagglutinin in Vigna radiata. Examination of extracts by gel filtration and ion exchange chromatography showed that an α-galactosidase activity exactly co-purified with a hemagglutinin acti