Hydroxyacids
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. 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
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2. PROTETORES SOLARES À BASE DE FILTROS INORGÂNICOS: DESENVOLVIMENTO E CARACTERIZAÇÃO
The inorganic sunscreens represented mainly by titanium dioxide (TiO2) and Zinc Oxide (ZnO), were classified as inert particles, therefore, they are pointed out as the best way to protect the skin against the harmful effects of ultraviolet radiation (UV). However, recent studies suggest that these particles have several stability problems that may lead to a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/01/2012
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3. Estudo e aplicação sintetica da arilação de Heck-Matsuda de desidrohidroxi esteres e desidroamino esteres / Study and synthetic application of the Heck-Matsuda arylation of dehydrohydroxy esters and dehydroamino esters
A arilação de acrilatos 2-acetóxi ou acetamido substituídos foi estudada utilizando a reação de Heck com sais de arenodiazônio. Após avaliação do catalisador, solvente, temperatura e acidez do meio reacional na arilação do 2-acetoxiacrilato de metila com o sal tetrafluoroborato de p-metoxifenildiazônio, a melhor condição encontrada emprega Pd2
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2010
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4. Alfa-hidroxiácidos: aplicações cosméticas e dermatológicas / Alpha-hydroxyacids: cosmetic and dermatologic applications
Nos últimos anos, formulações cosméticas contendo alfa-hidroxiácidos têm sido amplamente utilizadas. Estes produtos, se adequadamente preparados, são utilizados no controle da pele seca, ictiose, acne e outras condições caracterizadas por hiperqueratose. Aplicados de várias maneiras, os alfa-hidroxiácidos reduzem significativamente os sintomas da
Publicado em: 2010
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5. Síntese de Novos Nucleosídeos Quinolônicos não Naturais como Potenciais Agentes Antivirais / Synthesis of New Quinolonics Nucleosides no Natural by Antivirals Potential Agents
The interesting biological activities of synthetic quinoline derivatives as antibacterial and antiviral agents urged many research groups to construct numerous analogues of such compounds. Since the discovery of acyclovir as a potent and selective antiherpes virus agent, considerable interest has been focused in the synthesis of novel acyclonucleoside analog
Publicado em: 2003
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6. Catabolism of 4-Hydroxyacids and 4-Hydroxynonenal via 4-Hydroxy-4-phosphoacyl-CoAs*♦
4-Hydroxyacids are products of ubiquitously occurring lipid peroxidation (C9, C6) or drugs of abuse (C4, C5). We investigated the catabolism of these compounds using a combination of metabolomics and mass isotopomer analysis. Livers were perfused with various concentrations of unlabeled and labeled saturated 4-hydroxyacids (C4 to C11) or 4-hydroxynonenal. Al
American Society for Biochemistry and Molecular Biology.
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7. Paving a Catabolic Highway♦: Catabolism of 4-Hydroxyacids and 4-Hydroxynonenal via 4-Hydroxy-4-phosphoacyl-CoAs
American Society for Biochemistry and Molecular Biology.
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8. Antimicrobial Activity of 8-Quinolinols, Salicylic Acids, Hydroxynaphthoic Acids, and Salts of Selected Quinolinols with Selected Hydroxy-Acids
Seventy-seven compounds were screened by the disc-plate method against strains of five bacteria and five fungi. A new constant was proposed to describe the antimicrobial activity of a compound in a defined system of organisms. This constant includes not only the inhibitory level of activity of the material but also the number of organisms inhibited. This con
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9. Effects of Ascorbic Acid, Glutathione, Thiocyanate, and Iodide on Antimicrobial Activity of Acidified Nitrite
It has been hypothesized that dietary nitrite augments the antimicrobial activity of gastric acid after conversion to nitric oxide and other reactive nitrogen intermediates, thus resulting in increased resistance against gastrointestinal infection. In this study, we showed that the reducing agents ascorbic acid and glutathione reduced the activity of acidifi
American Society for Microbiology.
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10. Formic Hydrogenlyase and the Photoassimilation of Formate by a Strain of Rhodopseudomonas palustris
A photosynthetic bacterium isolated by enrichment on media containing formate as major source of cell carbon was identified as a strain of Rhodopseudomonas palustris. It grew on a wide range of simple organic compounds including alcohols, fatty acids, and hydroxyacids, on a chemically defined medium with biotin and p-aminobenzoic acid as essential growth fac
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11. Seed Dormancy in Red Rice 1: VII. Structure-Activity Studies of Germination Stimulants
Many chemically dissimilar substances break dormancy of seeds, but the relationship between chemical structure and physiological activity is unknown. In this study, the concentrations of organic acids, esters, aldehydes, alcohols, and inorganic weak acids required to elicit 50% germination of initially dormant, dehulled red rice seeds (Oryza sativa) were det
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12. Interaction of two arginine residues in lactate oxidase with the enzyme flavin: Conversion of FMN to 8-formyl-FMN
Two arginine residues, Arg-181 and Arg-268, are conserved throughout the known family of FMN-containing enzymes that catalyze the oxidation of α-hydroxyacids. In the lactate oxidase from Aerococcus viridans, these residues have been changed to lysine in two single mutations and in a double mutant form. In addition, Arg-181 has been replaced by methioni
The National Academy of Sciences.