Macromolecular Constituents
Mostrando 1-12 de 22 artigos, teses e dissertações.
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1. Estudo químico, análise do óleo essencial e avaliação das atividades antioxidante e antibacteriana do Marmelhinho [Cordiera sessilis (Vell.) Kuntze (Rubiaceae)]
In this work was carried out chemical analysis, identification of volatile components, the determination of antioxidant activity and antibacterial activity of wood, bark and leaves of Cordiera sessilis (Vell) Kuntze, known as marmelinho. This study is justified because the analysis of chemical species Cordiera sessilis (Vell) Kuntze had not been studied so f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/07/2012
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2. Estudo dos polifenóis, atividade antioxidante e antimicrobiana da madeira e casca de Maclura tinctoria (L) D. Don ex Steud
Neste estudo inédito, a espécie Maclura tinctoria (L.) D. Don Ex Steud., comumente conhecida como amoreira, foi avaliada a composição dos constituintes macromoleculares, teor de compostos fenólicos, atividade antioxidante e antimicrobiana da madeira e casca desta espécie. Os teores de extrativos totais, lignina insolúvel em ácido (lignina de Klason),
Publicado em: 2010
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3. Relevância de compostos de baixa massa molar produzidos por fungos e envolvidos na biodegradação da madeira
Over the last decade, evidences have been shown that the wood biodegradation by fungi is not only a result of the action of their enzymatic machinery but also of various low molecular weight non-enzymatic compounds, especially in fungi that promote brown and white decay, which in nature are the major wood decaying microorganisms. The present review focuses o
Química Nova. Publicado em: 2009
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4. Molecular and Structural Damage to Escherichia coli Produced by Antibody, Complement, and Lysozyme Systems
The antibacterial action of antibody (normal and hyperimmune), complement, and lysozyme has been studied by correlating the ultrastructural and biochemical changes that they cause in smooth Escherichia coli. Both normal and hyperimmune antibody, in the absence of lysozyme, produced complement-dependent release, into the suspending medium, of 63 to 72% of the
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5. Isolation and Properties of a Macromolecular, Water-Soluble, Immuno-Adjuvant Fraction from the Cell Wall of Mycobacterium smegmatis
Trypsin- and chymotrypsin-treated delipidated cell walls of Mycobacterium smegmatis were digested overnight with lysozyme. The water-soluble products thus obtained were filtered on a column of Sephadex G-50; the first peak, excluded from the column, has immunological adjuvant activity. The material of the excluded peak is obtained after lyophilization as a s
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6. Albumin-IgG complexes in human serum and plasma that inhibit blood platelet adhesion.
Macromolecular albumin-IgG complexes have been isolated from human serum and characterized immunologically. These complexes are shown to be present in plasma also and appear to be normal constituents of blood. The complexes can be demonstrated in normal serum and plasma by immunoelectrophoresis and rocket immunoelectrophoresis, as well as by use of a two-ste
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7. Growth and metabolism of inositol-starved Saccharomyces cerevisiae.
Upon starvation for inositol, a phospholipid precursor, an inositol-requiring mutant of Saccharomyces cerevisiae has been shown to die if all other conditions are growth supporting. The growth and metabolism of inositol-starved cells has been investigated in order to determine the physiological state leading to "inositolless death". The synthesis of the majo
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8. TRANSLOCATION OF MRNA CODONS, I. THE PREPARATION AND CHARACTERISTICS OF A HOMOGENEOUS ENZYME
This report describes a convenient scheme for the further purification of an E. coli enzyme which is required for the translocation step in protein biosynthesis. The homogeneous enzyme translocase appears to be a relatively large monomeric protein, having a molecular weight of approximately 72,000, and acts in a catalytic fashion during protein synthesis. It
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9. Microbial transformation of 14C-labeled 2,4,6-trinitrotoluene in an activated-sludge system.
The fate of 14C-labeled 2,4,6-trinitrotoluene (TNT) in an activated-sludge system was investigated. No [14C]TNT could be detected in the contents of an aerated reactor after 3 to 5 days of incubation. No significant 14CO2 was formed, and the radioactivity was about equally divided between the floc and the supernatant. The radioactive carbon present in the mi
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10. Distribution of Griseofulvin Taken up by Microsporum gypseum: Complexes of the Antibiotic with Cell Constituents
El-Nakeeb, Moustafa A. (Rutgers, The State University, New Brunswick, N.J.), and J. O. Lampen. Distribution of griseofulvin taken up by Microsporum gypseum: complexes of the antibiotic with cell constituents. J. Bacteriol. 89:1075–1081. 1965.—The griseofulvin-(4-methoxy-H3) accumulated by Microsporum gypseum was bound to fungal constituents. Mild procedu
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11. Multiscale Measurements Distinguish Cellular and Interstitial Hindrances to Diffusion In Vivo
Molecular cancer therapy relies on interstitial diffusion for drug distribution in solid tumors. A mechanistic understanding of how tumor components affect diffusion is necessary to advance cancer drug development. Yet, because of limitations in current techniques, it is unclear how individual tissue components hinder diffusion. We developed multiscale fluor
The Biophysical Society.
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12. DIALYSIS FLASK FOR CONCENTRATED CULTURE OF MICROORGANISMS
Gerhardt, Philipp (The University of Michigan, Ann Arbor), and D. M. Gallup. Dialysis flask for concentrated culture of microorganisms. J. Bacteriol 86:919–929. 1963.—A twin-chambered dialysis flask was designed with a supported membrane clamped between a reservoir of medium in the bottom and a small volume of culture above, the unit being mounted on a s