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| Registros recuperados: 25 | |
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| Gómez Zavala, Luis Alberto. |
| En jitomate (Lycopersicon esculentum Mill.) germoplasmas no comerciales resistentes son usados como portainjertos para el control de enfermedades. Los compuestos fenólicos están asociados a genotipos resistentes contra especies de Fusarium. Altos contenidos de fenoles solubles totales puede estar asociado a genotipos resistentes a Fusarium oxysporum f. sp. lycopersici raza 3. En el presente estudio se comparo el porcentaje de severidad en plantas injertadas y no injertadas inoculadas con Fol-3, así como el contenido de fenoles solubles totales en plantas de jitomate Multifort resistente y Bizarr, Jazmín y Malinche susceptibles a este hongo. Plantas de los genotipos susceptibles injertadas sobre Multifort fueron inoculadas o no en una suspensión de 1x106/ml... |
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Palavras-chave: Injertos; Compuestos fenólicos; Fusarium oxysporum f. sp. lycopersici raza 3; Resistencia; Graft; Phenols; Resistance; Maestría; Fitopatología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/230 |
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| Gómez Zavala, Luis Alberto. |
| En jitomate (Lycopersicon esculentum Mill.) germoplasmas no comerciales resistentes son usados como portainjertos para el control de enfermedades. Los compuestos fenólicos están asociados a genotipos resistentes contra especies de Fusarium. Altos contenidos de fenoles solubles totales puede estar asociado a genotipos resistentes a Fusarium oxysporum f. sp. lycopersici raza 3. En el presente estudio se comparo el porcentaje de severidad en plantas injertadas y no injertadas inoculadas con Fol-3, así como el contenido de fenoles solubles totales en plantas de jitomate Multifort resistente y Bizarr, Jazmín y Malinche susceptibles a este hongo. Plantas de los genotipos susceptibles injertadas sobre Multifort fueron inoculadas o no en una suspensión de 1x106/ml... |
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Palavras-chave: Injertos; Compuestos fenólicos; Fusarium oxysporum f. sp. lycopersici raza 3; Resistencia; Graft; Phenols; Resistance; Maestría; Fitopatología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/230 |
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| Bruno,Marcelo; Oliveira,Roberto A. de. |
| In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anaerobic digestion; Methane; Nitrogen; Phosphorus; Phenols. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400020 |
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| Oliveira,Roberto A. de; Bruno,Natani M. N.. |
| In this study it was evaluated the start-up procedures of anaerobic treatment system with three horizontal anaerobic reactors (R1, R2 and R3), installed in series, with volume of 1.2 L each. R1 had sludge blanket, and R2 and R3 had half supporter of bamboo and coconut fiber, respectively. As an affluent, it was synthesized wastewater from mechanical pulping of the coffee fruit by wet method, with a mean value of total chemical oxygen demand (CODtotal) of 16,003 mg L-1. The hydraulic retention time (HRT) in each reactor was 30 h. The volumetric organic loading (VOL) applied in R1 varied from 8.9 to 25.0 g of CODtotal (L d)-1. The mean removal efficiencies of CODtotal varied from 43 to 97% in the treatment system (R1+R2+R3), stabilizing above 80% after 30... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volumetric organic loading; Bamboo; Methane; Phenols; Reactors in series. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000200014 |
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| Silva,Ara; Morais,SM; Marques,MMM; Lima,DM; Santos,SCC; Almeida,RR; Vieira,IGP; Guedes,MIF. |
| In recent years, the search for natural plant products to fight viral diseases has been increasing. In this work, two Spondias species, namely S. mombin and S. tuberosa, found in Ceará state (Brazil), and their main phenolic components were evaluated against dengue virus. In vitro antiviral tests were performed against type-2 dengue virus by the MTT method and standard cytopathic effect reduction assay in C6/36 cells. Cytotoxicity was also evaluated by MTT. The presence of phenolic compounds quercetin, rutin, and ellagic acid in plant extracts was characterized by HPLC analysis. Both Spondias species extracts and components were nontoxic to the cells whereas rutin and quercetin displayed relevant antiviral activity with IC50 of 362.68 µg/mL and 500 µg/mL,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural products; Phenols; Dengue; Antiviral agents. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000400007 |
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| Pereira,Tatiana Pires; Modesto,Elisa Cristina; Nepomuceno,Delci de Deus; Oliveira,Osniel Faria de; Freitas,Rafaela Scalise Xavier de; Muir,James Pierre; Dubeux Junior,José Carlos Batista; Almeida,João Carlos de Carvalho. |
| Abstract: The objective of this work was to characterize condensed tannins (CT) from six tropical forage legumes and to determine their biological activity. The monomers propelargonidin, prodelphinidin and procyanidin were analyzed, as well as extractable condensed tannin (ECT), protein-bound CT (PBCT) and fiber-bound CT (FBCT), molecular weight, degree of polymerization, polydispersity index, and biological activity by protein precipitate by phenols (PPP) of leaves of the legumes Cajanus cajan, Gliricidia sepium, Stylosanthes capitata x Stylosanthes macrocephala (stylo), Flemingia macrophylla, Cratylia argentea, and Mimosa caesalpiniifolia, and of the bark of this latter species. Differences were observed in the concentrations of ECT, PBCT, PPP, and total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forage legumes; Phenols; Procyanidins; Prodelphinidins; Protein. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000901070 |
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| Cuellar-Álvarez,Laura; Cuellar-Álvarez,Natalia; Galeano-García,Paula; Suárez-Salazar,Juan Carlos. |
| Abstract Cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K.Schum.) is an evergreen tree in the family Malvaceae, with nutritional qualities of interest in the food and cosmetic industry. It is necessary for its processing, in addition to other processes, to perform a fermentation, affecting its chemical composition. Therefore, the effect of fermentation time on the phenolic content and antioxidant activity of Cupuassu (T. grandiflorum) beans, was determined. During this process, the chemical properties of the beans and the phenolic content were evaluated every two days; also quantifying the secondary metabolites Catechin, Epicatechin, Theobromine and Caffeine by high performance liquid chromatography (HPLC). The antioxidant activity was analyzed using... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bromatological analysis; Phenols; Fermentation; Free radicals; Análisis bromatológico; Fenoles; Fermentación; Radicales libres. |
| Ano: 2017 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000400473 |
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| Bertoncelli, Douglas Junior; Universidade Tecnológica Federal do Paraná; Oliveira, Marisa de Cacia; Universidade Tecnológica Federal do Paraná; Passos, Amanda Izabel dos; Universidade Tecnológica Federal do Paraná; Ariati, Ana Claudia; Universidade Tecnológica Federal do Paraná; Ortolan, Alexandre Osmar; Universidade Tecnológica Federal do Paraná; Witt, Elaine de Paula; Universidade Tecnológica Federal do Paraná. |
| Obtaining cells of Physalis pubescens is of interest for studies of primary and secondary metabolic pathways, in the search for new active molecules. Our objectives were to evaluate the regeneration potential of explants from different parts of the plant, growth regulators to be used, and the determination of the growth curve of the callus. We used explants of leaf, root, stem and petiole, cultured on Murashige and Skoog medium with different concentrations of 6-benzylaminopurine and a-naphthaleneacetic acid. The explants from stem and petiole had a higher regeneration potential of the shoot to the treatment with 0.5 mg L-1 6-benzylaminopurine, and the explants of leave and root emitted more roots, with lower production of callus. The tests showed that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0 cell; Growth; Phenols; Sugars Botânica-biotecnologia. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/18074 |
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| TIETBOHL,LUIS A.C.; OLIVEIRA,ADRIANA P.; ESTEVES,RICARDO S.; ALBUQUERQUE,RICARDO D.D.G.; FOLLY,DIOGO; MACHADO,FRANCISCO P.; CORRÊA,ARTHUR L.; SANTOS,MARCELO G.; RUIZ,ANA L.G.; ROCHA,LEANDRO. |
| ABSTRACT Myrciaria floribunda (H. West ex Willd.) O. Berg, Myrtaceae, is a native plant species of the Atlantic Rain Forest, from north to south of Brazil. The lyophilized ethyl acetate extract from the leaves of M. floribunda was investigated for its antiproliferative activity in tumor cell lines, antioxidant capacity and its total phenolic, flavonoid and tannin contents. Antiproliferative activity was tested in vitro against seven human cancer cells and against immortalized human skin keratinocytes line (HaCat, no cancer cell). Antioxidant activity was determined using 1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and oxygen radical absorbing capacity (ORAC) assays and total phenolic, flavonoid and tannin contents were determined by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antiproliferative; Flavonoids; Myrciaria floribunda; Phenols. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301111 |
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| Teixeira,Maria Gessi; Carvalho,Marília; Leite,Marco Aurélio; Barbosa,Sandro; Santos filho,Plinio Rodrigues dos; Santos,Breno Régis. |
| Abstract The aim of this work was to evaluate the effect of Salicylic acid, 2,4-D and 2-iP on the production of total phenolic and flavonoids as well in the levels of fukugetin and 7-epiclusianone in callus of Garcinia brasiliensis zygotic embryos. For this, Bacupari callus were exposed to different concentrations (0.0; 0.1; 1; 10; 100 µM) of Salicylic acid (SA) in the presence or in the absence of 72 μM 2-iP and 28.73 μM 2,4-D. The highest concentration of total phenolic occurred in the treatment with 100 μM SA in callus subcultured in the absence of 2,4-D and 2-iP, and with 10 μM SA in callus subcultured in the presence of these regulators. Concerning flavonoids, 2,4-D and 2-iP supplementation without the presence of the SA was sufficient for the highest... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacupari; Phenols; Flavonoids; 7-epiclusianone; Fukugetin. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100407 |
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| Jiang,Zhongyang; Peiyong,Guo; Chang,Cheinchi; Gao,Lili; Li,Shixiong; Wan,Jinjin. |
| This study was performed in order to isolate and identify unknown allelochemicals from Ficus microcarpa, and to investigate the inhibitory to bloom-forming of green alga Chlorella pyrenoidosa. Through gradient elution, fraction C2, whose inhibition of alga growth in diverse extracts was the strongest was shown to cause significant reductions of maximum quantum yield, as well as electron transport rates of C. pyrenoidosa. The study data also showed that the increase of fraction C2 concentration decreased the activity of total superoxide dismutase (SOD), but increased the activities of catalase (CAT) and malondialdehyde (MDA) content. These results demonstrate that the active fraction C2 not only induced the photoinhibition or photodamage of PSII reaction... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelochemical; Phenols; Photosynthesis; Ficus microcarpa; Chlorella pyrenoidosa. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000400595 |
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| Registros recuperados: 25 | |
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