Enzymatic Activation
Mostrando 1-12 de 507 artigos, teses e dissertações.
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1. Indução de resistência por acibenzolar-S-metil em feijão caupi no controle da antracnose
RESUMO O feijão caupi, [Vigna unguiculata (L.) Walp.] tem uma grande importância em virtude do elevado teor proteico e energético na alimentação humana. Dentre as principais doenças da cultura do feijão, destaca-se a antracnose, causada pelo desenvolvimento do fungo hpsColletotrichum lindemuthianumhps. A indução de resistência torna-se uma alternat
Summa phytopathol.. Publicado em: 2019-03
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2. Kinetics and Thermodynamics of Thermal Inactivation of β-Galactosidase from Aspergillus oryzae
ABSTRACT For optimization of biochemical processes in food and pharmaceutical industries, the evaluation of enzyme inactivation kinetic models is necessary to allow their adequate use. Kinetic studies of thermal inactivation of β-galactosidase from Aspergillus oryzae were conducted in order to critically evaluate mathematical equations presented in the lite
Braz. arch. biol. technol.. Publicado em: 13/09/2018
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3. The browning kinetics of the non-enzymatic browning reaction in L-ascorbic acid/basic amino acid systems
Abstract Under the conditions of weak basis and the reaction temperature range of 110-150 °C, lysine, arginine and histidine were reacted with L-ascorbic acid at equal amount for 30-150 min, respectively and the formation of browning products was monitored with UV–vis spectrometry. The kinetic characteristics of their non-enzymatic browning reaction were
Food Sci. Technol. Publicado em: 20/07/2017
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4. Low Potential and Non-Enzymatic Hydrogen Peroxide Sensor Based on Copper Oxide Nanoparticle on Activated Pencil Graphite Electrode
An electrochemical sensor for H2O2 determination was prepared by electrodepositing copper oxide nanoparticles on the activated pencil graphite electrodes. At first, a study has been made of the optimum conditions for chemical activation of the pencil graphite electrodes (APGE) and then the activated pencil graphite electrode was modified with copper oxide na
J. Braz. Chem. Soc.. Publicado em: 2017-05
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5. Articular inflammation induced by an enzymatically-inactive Lys49 phospholipase A2: activation of endogenous phospholipases contributes to the pronociceptive effect
Abstract Background Arthritis is a set of inflammatory conditions that induce aching, stiffness, swelling, pain and may cause functional disability with severe consequences to the patient’s lives. These are multi-mediated pathologies that cannot be effectively protected and/or treated. Therefore, the aim of this study was to establish a new model of acut
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 27/04/2017
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6. Cytotoxic activity of Androctonus australis hector venom and its toxic fractions on human lung cancer cell line
Abstract Background: Several studies have showed that animal venoms are a source of bioactive compounds that may inhibit the growth of cancer cells, which makes them useful agents for therapeutic applications. Recently, it was established that venom toxins from scorpions induced cytotoxic, antiproliferative and apoptogenic effects on cancer cells. Therefore
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 01/12/2016
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7. EFFECTIVE ALKALINE PEROXIDE OXIDATION PRETREATMENT OF SHEA TREE SAWDUST FOR THE PRODUCTION OF BIOFUELS: KINETICS OF DELIGNIFICATION AND ENZYMATIC CONVERSION TO SUGAR AND SUBSEQUENT PRODUCTION OF ETHANOL BY FERMENTATION USING Saccharomyces cerevisiae
Abstract Shea tree sawdust delignification kinetic data during alkaline peroxide pretreatment were investigated at temperatures of 120 °C, 135 °C, and 150 °C. The activation energy during delignification was 76.4 kJ/mol and the Arrhenius constant was calculated as 8.4 x 106 per min. The reducing sugar yield for the treated to the untreated biomass was abo
Braz. J. Chem. Eng.. Publicado em: 2016-03
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8. Purification and characterization of cold-adapted beta-agarase from an Antarctic psychrophilic strain
An extracellular β-agarase was purified from
Pseudoalteromonas sp. NJ21, a Psychrophilic agar-degrading bacterium isolated from Antarctic Prydz Bay sediments. The purified agarase (Aga21) revealed a single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis, with an apparent molecular weight of 80 kDa. The optimum pH and teBraz. J. Microbiol.. Publicado em: 21/07/2015
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9. Anti-inflammatory sesquiterpene lactones from Tithonia diversifolia trigger different effects on human neutrophils
Abstract The tagitinins isolated of Tithonia diversifolia (Hemsl.) A. Gray, Asteraceae, are the most studied sesquiterpene lactones due to their wide spectrum of pharmacologic activities, especially related with nuclear factor-kappa B inhibition. Nevertheless, detailed studies about the mechanism of action of its active compounds are still lacking. Neutrophi
Rev. bras. farmacogn.. Publicado em: 2015-04
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10. MICROWAVE ACTIVATION OF IMMOBILIZED LIPASE FOR TRANSESTERIFICATION OF VEGETABLE OILS
This work investigated the effect of microwave irradiation (MW) on the ethanolysis rate of soybean and sunflower oils catalyzed by supported Novozyme 435 (Candida antarctica). The effects of tert-butanol, water addition and oil:ethanol molar ratio on transesterification were evaluated under conventional heating (CH), and under optimum reaction conditions (wi
Quím. Nova. Publicado em: 2015-03
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11. PR-protein activities in table beet against Cercospora beticola after spraying chitosan or acibenzolar-S-methyl
Cercospora leaf spot (Cercospora beticola) is the most important disease of table beet in the world. In this study, the preventive application of chitosan or acibenzolar-S-methyl (ASM) to control the disease was evaluated, and the involvement of pathogenesis-related proteins in the plant-pathogen interaction was verified. Beet plants cultivar Early Wonder we
Trop. plant pathol.. Publicado em: 2013-12
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12. Leishmania amazonensis prejudica resposta de células dendríticas via inibição da expressão de CD40 mediada por ectonucleotidases e pela ativação do receptor de adenosina A2B / Leishmania amazonensis prejudica resposta de células dendríticas via inibição da expressão de CD40 mediada por ectonucleotidases e pela ativação do receptor de adenosina A2B
Leishmania infections can result in a wide spectrum of clinical manifestations, and the outcome of disease is determined by parasite species and the host immune response. Dendritic cells play an essential role in the modulation of immune response including during Leishmania infection. Extracellular-ATP exhibits pro-inflammatory properties whereas adenosine i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012