Fatty Acid Decarboxylation
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Catalisadores de paládio suportado em carvão ativado para produção de biocombustíveis / Palladium catalysts supported on activated carbon for the production of biofuels.
A proposta deste trabalho é estudar a preparação e caracterização do catalisador Pd/C para a descarboxilação do ácido esteárico, a fim de obter biodiesel parafínico. Os precursores utilizados na preparação dos carvões foram o endocarpo do coco da baía e a bainha da palmeira de manila. Estes carvões foram ativados quimicamente e por microondas
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/11/2011
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2. Matéria orgânica de Latossolos Húmicos: análises térmica e espectroscópica, efeito do uso e correção química / Organic matter of humic Latosol (Oxisol): thermal and spectroscopic analyses, land use and chemical correction
The objective of this study was to contribute to the clarification of several aspects related to the behavior of organic matter (OM) in highly weathered tropical soils. Six samples of humic A horizon Latosol were collected from three sites in Minas Gerais: i) Sericita, (under coffee crop, pasture, ferns and Atlantic Forest fragment); ii) Mutum (under Atlanti
Publicado em: 2008
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3. Oxidative Decarboxylation of Branched-Chain 2-Oxo Fatty Acids by Higher Plant Peroxisomes 1
Peroxisomes from mung bean (Vigna radiata L.) hypocotyls catalyze, in the presence of branched-chain 2-oxo fatty acid, CoASH and NAD, the release of CO2, and the formation of NADH and acyl-CoA. The acyl-CoA contains one carbon atom less than the branched-chain 2-oxo fatty acid and serves as substrate for the peroxisomal acyl-CoA oxidase. CO2 release, NADH an
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4. Lipid metabolism during bacterial growth, sporulation, and germination: kinetics of fatty acid and macromolecular synthesis during spore germination and outgrowth of Bacillus thuringiensis.
The timing and kinetics of fatty acid synthesis are delineated for Bacillus thuringiensis spore germination and outgrowth by analyzing [U-14C]acetate and [2-3H]glycerol incorporation into chloroform-methanol-extractable and trichloroacetic acid-precipitable lipids. In addition to measurement of pulsed and continuous labeling of fatty acids, monitoring the in
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5. Structure and Biosynthesis of Cuticular Lipids: Hydroxylation of Palmitic Acid and Decarboxylation of C28, C30, and C32 Acids in Vicia faba Flowers 12
The structure and composition of the cutin monomers from the flower petals of Vicia faba were determined by hydrogenolysis (LiAlH4) or deuterolysis (LiAlD4) followed by thin layer chromatography and combined gas-liquid chromatography and mass spectrometry. The major components were 10, 16-dihydroxyhexadecanoic acid (79.8%), 9, 16-dihydroxyhexadecanoic acid (
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6. Aliphatic Hydrocarbons and Fatty Acids of Some Marine and Freshwater Microorganisms
Gas chromatography and combined gas chromatography-mass spectrometry have been used to study the fatty acids and hydrocarbons of a bacterium from the Pacific Ocean, Vibrio marinus, a freshwater blue-green alga, Anacystis nidulans, and algal mat communities from the Gulf of Mexico. Both types of microorganisms (bacteria and algae) showed relatively simple hyd
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7. The Development of a Metabolic Disease Phenotype in CTP:Phosphoethanolamine Cytidylyltransferase-deficient Mice*
Phosphatidylethanolamine (PE) is an important inner membrane phospholipid mostly synthesized de novo via the PE-Kennedy pathway and by the decarboxylation of phosphatidylserine. CTP:phosphoethanolamine cytidylyltransferase (Pcyt2) catalyzes the formation of CDP-ethanolamine, which is often the rate regulatory step in the PE-Kennedy pathway. In the current in
American Society for Biochemistry and Molecular Biology.
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8. Effects of guanidine derivatives on mitochondrial function: I. Phenethylbiguanide inhibition of respiration in mitochondria from guinea pig and rat tissues
Derivatives of guanidine, such as phenethylbiguanide, are potent inhibitors of mitochondrial respiration in vitro, but the relevance of this inhibition to their in vivo blood sugar-lowering action is not clear. We have studied the metabolism of pyruvate and long chain fatty acids by mitochondria from several tissues of guinea pigs and rats and observed the e
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9. Engineered Fatty Acid Biosynthesis in Streptomyces by Altered Catalytic Function of β-Ketoacyl-Acyl Carrier Protein Synthase III
The Streptomyces glaucescens β-ketoacyl-acyl carrier protein (ACP) synthase III (KASIII) initiates straight- and branched-chain fatty acid biosynthesis by catalyzing the decarboxylative condensation of malonyl-ACP with different acyl-coenzyme A (CoA) primers. This KASIII has one cysteine residue, which is critical for forming an acyl-enzyme intermediate in
American Society for Microbiology.
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10. Mechanisms of Fatty Acid Toxicity for Yeast
Neal, A. L. (Rutgers, The State University, New Brunswick, N.J.), Joan O. Weinstock, and J. Oliver Lampen. Mechanisms of fatty acid toxicity for yeast. J. Bacteriol. 90:126–131. 1965.—The internal pH of stationary- and log-phase yeast cells dropped quite rapidly when the cells were exposed to acetate buffers at pH 4 and 3, whereas no, or much less, acidi
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11. Host cell phospholipids are trafficked to and then modified by Chlamydia trachomatis.
There is little information on the trafficking of eukaryotic lipids from a host cell to either the cytoplasmic membrane of or the vacuolar membrane surrounding intracellular pathogens. Purified Chlamydia trachomatis, an obligate intracellular bacterial parasite, contains several eukaryotic glycerophospholipids, yet attempts to demonstrate transfer of these l
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12. Branched-chain fatty acids produced by mutants of Streptomyces fradiae, putative precursors of the lactone ring of tylosin.
Three branched-chain fatty acids (7-hydroxy-4,6-dimethylnona-2,4-dienoic acid [compound 1], its 7-epimer [compound 2], and 7-keto-4,6-dimethylnona-2,4-dienoic acid [compound 3]) and a ketone (9-hydroxy-6,8-dimethylundeca-4,6-dien-3-one [compound 4]) were isolated from the culture broth of mutants of Streptomyces fradiae which were blocked in the biosynthesis