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| Registros recuperados: 11 | |
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| Perovano Filho, Natalino; UNIVERSIDADE FEDERAL DE ALAGOAS, INSTITUTO DE QUÍMICA E BIOTECNOLOGIA; Silva, Kelly Fernanda Seára da; UNIVERSIDADE FEDERAL DE ALAGOAS, INSTITUTO DE QUÍMICA E BIOTECNOLOGIA; López, Ana Maria Queijeiro; UNIVERSIDADE FEDERAL DE ALAGOAS, INSTITUTO DE QUÍMICA E BIOTECNOLOGIA. |
| Enzimas extracelulares de fungos são importantes para sua sobrevivência em ambientes inóspitos, sendo capazes de degradar compostos recalcitrantes. Fungos filamentosos secretam hidrolases e fenoloxidases capazes de degradar complexos de estruturas aromáticas, como de alguns xenobióticos. O propósito deste trabalho foi testar diferentes corantes (Azul de Metileno, Azure B, Verde Malaquita e Cristal Violeta), em substituição ao composto Poly R478, no método de seleção de microrganismos degradadores de fenóis em meio sólido, além de comparar tal atividade de Micoflora isolada de efluentes de indústria sucroalcooleira com a de outros fungos adquiridos em coleção oficial. Os corantes testados revelaram-se ótimos substitutos do Poly R478. O isolado que... |
| Tipo: Por composição bioquímica; |
Palavras-chave: 2.12.02.00-1 degradação biológica; Fenoloxidases; Bagaço de cana; Serragem de madeira; Azul de Metileno; Cladosporium Microbiologia Aplicada biological degradation; Phenol; Sugarcane bagasse; Sawing wood; Methylene blue; Cladosporium. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/6187 |
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| Hendrawan, Yusuf; Sabrinauly, Sabrinauly; Hawa, La Choviya; Argo, Bambang Dwi; Rachmawati, Muchnuria. |
| Basil leaves (Ocimum Americanum Linn) are commonly known to contain phenol and flavonoid compounds which can act as antimicrobial and antioxidants. In general, the bioactive compound can be obtained by conventional extraction method, maceration. To increase the amount of bioactive compounds which can be extracted, it is necessary to conduct pre-treatment using Pulsed Electric Field (PEF). PEF has an advantage in increasing the compound transfer contained in cells to be extracted from the plant tissues via electroporation mechanisms, without causing significant temperature changes. This study aims to determine the effect of electric field strength variations (2, 3, and 4 kV/cm) and duration of pre-treatment (1, 2, and 3 minutes) to total phenol and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering Basil leaves; Phenol; Flavonoid; Pulsed electric field. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5240 |
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| Rahimi-Ajdadi, Fatemeh; Esmaili, Masoomeh. |
| Agricultural crops and forest residues are of valuable resources to produce biofuel due to anaerobic digestion. But, the recalcitrance nature of these lignocellulose residues limits its enzymatic degradation. Therefore, efficient pretreatments prior to anaerobic digestion are essential. Hydrothermal-chemical pretreatments using Phenol (Ph), Sodium Hydroxide (SH), and Phosphoric Acid (PA), and combined pretreatments included Ph+SH and Ph+PA as chemical pretreatments were used for spruce wood. The samples were put into the autoclave at 134º C for 20 min. Acid hydrolysis, FTIR and SEM analyses were carried out. The results indicated that all pretreatments were effective lignin removal having the highest value for Ph (42.362%). Adding Ph to PA increased lignin... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biofuel; Combined pretreatment; Lignin removal; Phenol; SEM analysis. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6855 |
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| LAMUELA-RAVENTÓS,ROSA M; GIMENO,EVA; FITÓ,MONTSE; CASTELLOTE,ANA-ISABEL; COVAS,MARIBEL; DE LA TORRE-BORONAT,M. CARMEN; LÓPEZ-SABATER,M. CARMEN. |
| Phenolic compounds have shown to inhibit LDL oxidation in vitro and ex vivo; however, they are hydrosoluble compounds while LDL is a lipoprotein. Analysis of phenolic compounds in LDLs by HPLC is necessary to demonstrate their binding capacity to lipoproteins. We developed and validated a solid phase extraction method (SPE) that allowed us the purification of LDL samples and their analysis by HPLC. This methodology allowed us to demonstrate the in vitro binding capacity of tyrosol, one of the main phenolic compounds in olive oil, to LDL. In the intervention dietary study with volunteers, food rich in phenolic compounds affected LDL composition. Changes in LDL phenolics composition are not observed after the short-term ingestion of food rich in phenolic... |
| Tipo: Journal article |
Palavras-chave: Antioxidant; LDL; Olive oil; Oxidation; Phenol; Tyrosol. |
| Ano: 2004 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000200011 |
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| Ribeiro, Juliana Maria; UEM; Gasparino, Eliane; UEM; Marques, Débora Sommer; UEM; Luizetti, Fabiane; UEM; Soares, Maria Amélia Menck; UEM; Zeoula, Lúcia Maria; UEM. |
| O objetivo do trabalho foi comparar dois diferentes protocolos de extração de DNA de pelos de búfalos (Bubalus bubalis) e comparar três regiões de coleta de material (nuca, paleta direita e testa). Foram utilizados quatro búfalos com três repetições por animal e por região. No protocolo 1, foi utilizada a técnica do fenol-clorofórmio e no protocolo 2, a técnica de extração com CTAB. O protocolo 2 apresentou maior média de concentração de DNA para as amostras de pelos. Em relação ao local de retirada dos pelos, não foram encontradas diferenças significativas, porém nota-se que a região da testa dos animais apresentou maior concentração de DNA quando extraído com CTAB. Com relação à praticidade de utilização dos dois métodos avaliados, o protocolo 2, além de... |
| Tipo: Análise laboratorial |
Palavras-chave: 5.05.04.00-2 Reprodução Animal CTAB; Extração de DNA; Fenol; Pelos. Genética e Melhoramento dos Animais Domésticos CTAB; DNA extraction; Phenol; Fur.. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4839 |
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| Paca,Jan; Kosteckova,Alena; Pacova,Leona; Prell,Ales; Halecky,Martin; Paca Jr.,Jan; Stiborova,Marie; Kozliak,Evguenii; Soccol,Carlos Ricardo. |
| Kinetics of phenol biodegradation using suspended biomass of Comamonas testosteroni Pb50 (monoculture) was measured under conditions of nutrient abundance, limitation, and prolonged cell starvation in a fed-batch reactor, with phenol being the sole carbon and energy source. The pre-washed cells were applied for measurement of the phenol and oxygen uptake rates at varied starting phenol concentrations with the kinetic parameters calculated using the Haldane model. The results revealed that nutrient limitation significantly suppressed the maximum value of exogenous respiration rate while the endogenous respiration rate, affinity and tolerance to phenol increased. By contrast, cell starvation resulted in a drop of both the exogenous and endogenous respiration... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Respirometry; Kinetics; Phenol; Nutrition stress. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000600030 |
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| Detoni,Michelle de Lima; Vasconcelos,Eveline Gomes; Rust,Naiara Miranda; Isaias,Rosy Mary dos Santos; Soares,Geraldo Luiz Gonçalves. |
| Two species, Tanaostigmodes ringueleti and T. mecanga, induce distinct galls on Calliandra brevipes Benth (Fabaceae: Mimosoidae), a globose and a fusiform gall morphotype. Seasonal changes of phenolic content in the tissues of the two distinct galls were compared to those of non-galled leaves and stems of the host plants over one year. The variation in the phenolic content profiles was similar in both non-galled and galled tissues, and was primarily associated with changes in the levels of rainfall, indicating a direct response to hydric stress. In periods of drastic changes in water precipitation, the alterations were significantly higher in non-galled than in galled tissues suggesting that the gall inducers might limit the variation in the phenolic... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tanaostigmodes ringueleti; Tanaostigmodes mecanga; Gall; Insect-plant interaction; Phenol. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300013 |
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| Gerrard,Andrew Mark; Páca Júnior,Jan; Kostecková,Alena; Páca,Jan; Stiborová,Marie; Soccol,Carlos Ricardo. |
| This paper proposes the use of a preliminary, phenol removal step to reduce peak loads arriving at a conventional effluent plant. A packed bed reactor (PBR) using polyurethane foam, porous glass and also cocoa fibres as the inert support material was used. Experiments have been carried out where the flow-rates, plus inlet and outlet phenol concentrations were measured. A simple, plug-flow model is proposed to represent the results. Zero, first order, Monod and inhibited kinetics rate equations were evaluated. It was found that the Monod model gave the best fit to the experimental data and allowed linear graphs to be plotted. The Monod saturation constant, K, is approximately 50 g m-3, and ka is around 900 s-1. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodegradation; Phenol; Aerobic reactor; Models. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500018 |
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| Fontana,Luiz F.; Silva,Frederico S. da; Figueiredo,Natália G. de; Brum,Daniel M.; Netto,Annibal D. Pereira; Gigueiredo Junior,Alberto G. de; Crapez,Mirian A.C.. |
| The distribution of selected aromatic compounds and microbiology were assessed in superficial sediments from Suruí Mangrove, Guanabara Bay. Samples were collected at 23 stations, and particle size, organic matter, aromatic compounds, microbiology activity, biopolymers, and topography were determined. The concentration of aromatic compounds was distributed in patches over the entire mangrove, and their highest total concentration was determinated in the mangrove's central area. Particle size differed from most mangroves in that Suruí Mangrove has chernies on the edges and in front of the mangrove, and sand across the whole surface, which hampers the relationship between particle size and hydrocarbons. An average @ 10% p/p of organic matter was obtained, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbiologic activity; Guanabara Bay; Biopolymers; Phenol; Aromatic Polycyclic Hydrocarbons and Monoaromatics. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000400022 |
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| Registros recuperados: 11 | |
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