Microbiological Synthesis
Mostrando 1-12 de 32 artigos, teses e dissertações.
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1. Biogenic synthesis of silver nanoparticles from thyme extract for functionalization of a bioactive glass produced from rice husk ash
Abstract The rice husk, agro-industrial residue, stands out for having silica, the main oxide former of the bioactive glass. To avoid contamination in this biomaterial, substances with bactericidal properties, like silver can be incorporated. Thus, the objective of this work is the synthesis of silver nanoparticles to functionalize a bioactive glass synthesi
Cerâmica. Publicado em: 2022
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2. Impact of continuous flow chemistry in the synthesis of natural products and active pharmaceutical ingredients
ABSTRACT We present a comprehensive review of the advent and impact of continuous flow chemistry with regard to the synthesis of natural products and drugs, important pharmaceutical products and definitely responsible for a revolution in modern healthcare. We detail the beginnings of modern drugs and the large scale batch mode of production, both chemical an
An. Acad. Bras. Ciênc.. Publicado em: 2018
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3. Synthesis and antimicrobial evaluation of two peptide LyeTx I derivatives modified with the chelating agent HYNIC for radiolabeling with technetium-99m
Abstract Background Current diagnostic methods and imaging techniques are not able to differentiate septic and aseptic inflammation. Thus, reliable methods are sought to provide this distinction and scintigraphic imaging is an interesting option, since it is based on physiological changes. In this context, radiolabeled antimicrobial peptides have been inve
J. Venom. Anim. Toxins incl. Trop. Dis. Publicado em: 20/05/2016
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4. Green Synthesis of Chalcones and Microbiological Evaluation
A green method was developed for the synthesis of chalcones using glycerin as solvent. Subsequently, the potential microbiology activity of these molecules was evaluated by testing them against the Gram-positive bacteria Staphylococcus aureus (S. aureus) ATCC 19095 and Enterococcus faecalis (E. faecalis) ATCC 4083, the Gram-negative bacteria Escherichia coli
J. Braz. Chem. Soc.. Publicado em: 2015-06
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5. Síntese e controle de qualidade da ureia enriquecida em 13C para diagnóstico da Helicobacterpylori (HP)
The aim of the study was to synthesize the urea (13CO(NH2)2), with 99% 13C atoms, and to perform a quality analysis for the diagnosis (breath test) of Helicobacter pylori. Furthermore, the process was submitted to economic analysis. The reaction was performed in a stainless steel reactor, lined with polytetrafluoroethylene, under low pressure and temperature
Quím. Nova. Publicado em: 2013
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6. Clinical and microbiological characterization of pneumonia in mechanically ventilated patients
OBJECTIVE: To characterize mechanical ventilation-associated pneumonia (MVAP). METHOD: This is an observational descriptive study to characterize MVAP in 61 ventilated patients admitted in the intensive care units of the Hermanos Ameijeiras hospital during 2011. This study also aimed to isolate the bacteria causing MVAP and characterize their resistance to a
Braz J Infect Dis. Publicado em: 2012-10
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7. Efeito dos processos de irradiação e germinação nos aspectos nutricionais, sensoriais e microbiológicos em grãos de soja (Glycine m ax Merril) cultivar BRS216 / Effect of irradiation and germination processes in the nutritional, sensory and microbiological in soybeans (Glycine max Merrill) cultivra BRS216
Soybean (Gycine max (L.) Merrill) is an important legume for human diets due its potential health benefits. Because of the increasing stimulus to soybean consumption, mainly due to its several bioactive compounds, some processing methods have been studied as a way to know changes that occur in these compounds during the processes. Thus, this study aimed to a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/10/2011
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8. Discriminação molecular de linhagens de Aspergillus niger sensu strico produtoras e não produtoras de ocratoxina A
A ocratoxina A (OTA), uma micotoxina com propriedades nefrotóxica e genotóxica, tem recebido destaque devido à freqüente contaminação de produtos destinados à alimentação. A OTA é sintetizada por espécies pertencentes aos gêneros Penicillium e Aspergillus, entre elas, Aspergillus niger, uma das espécies fúngicas de maior importância econômica
Publicado em: 2009
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9. Polyketide biosynthetic gene bioprospection in metagenomic DNA from Atlantic Forest soil. / Bioprospecção de genes biossintéticos de policetídeos em DNA metagenômico de solo de Mata Atlântica.
The Brazilian Atlantic Forest is considered as one of the most important reservoir of biodiversity in the planet. This biome is extremely important for its richness of plant and animal species but although with their composition and interactions poorly known and unexplored from a microbiological perspective. One gram of soil can contain near 10 billion micro
Publicado em: 2009
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10. O emprego de fermento de pão, Saccharomyces cerevisiae, na síntese de feromônios
The use of pheromones in integrated pest management has been increasing in the last years due to environmental concern. This development is accompanied by the search for simple, efficient and less aggressive synthetic methodologies for the preparation of pheromones. One of these methodologies includes microbiological reactions, more specifically biocatalytic
Química Nova. Publicado em: 2004-06
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11. Sintese de (R)-(-)-ariletanolaminas via redução microbiologica utilizando-se fermento de pão (Saccharomyces cerevisiae) na criação do centro quiral
This work describes the synthesis of (R)-(-)-Arylethanolamines which present sympathomimetic properties and form an important class of biologically active compounds. The initial step of this work was the creation of the asymmetric center, by microbiological reduction of derivatives of acetophenone (ArCOCH2X where X= CI or N3) using baker s yeast (Saccharomyc
Publicado em: 1991
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12. The Microbiological Synthesis of Ergosterol: I. Assay Procedure