Consulta: subjectFacets:"Phenols"
Registros recuperados: 25
Data/hora: 10/06/2024 04:30:58

Identificación, dispersión, histopatología e impacto económico de Armillaria en aguacate en Charapan, Michoacán.
Provedor de dados: 32
Autores: Michua Cedillo, Jeny.
La identificación, dispersión e impacto económico de Armillaria sp. en aguacate Hass se estudió en el municipio de Charapan, Michoacán. Armillaria se aisló de raíces de árboles sintomáticos y muertos y se cultivó en BDS. La identificación de la especie se realizó por compatibilidad somática y amplificación de la región IGS-I del ADN ribosomal de 19 aislamientos. Los apareamientos dieron como resultado un solo grupo de compatibilidad; los confrontamientos se realizaron con A. mellea, A. gallica y A. mexicana, donde se observó la separación de las colonias. Las pruebas de patogenicidad se realizaron inoculando 35 plántulas de aguacate en condiciones de invernadero. Las raíces de las plántulas infectadas y de los árboles infectados naturalmente en campo se...
Palavras-chave: Compatibilidad somática; Dispersión; Fenoles; IGS; Incidencia; Inoculación; Rizomorfos; Somatic compatibility; Dispersion; Phenols; Incidence; Inoculation; Rhizomorphs; Fitopatología; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2218

Uso de injertos y contenido de fenoles solubles totales en genotipos de jitomate (Lycopersicon esculentum Mill.) resistentes y susceptibles a Fusarium oxysporum f. sp. lycopersici raza 3.
Provedor de dados: 32
Autores: 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...
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

Actividad de pal, acumulación de fenoles y flavonoides en el chile CM-334 infectado por Nacobbus aberrans e inoculado en el follaje con Phytophthora capsici.
Provedor de dados: 32
Autores: Sandoval Luna, Ruth.
Se evaluó la respuesta del chile (Capsicum annuum) CM-334 infectado con Nacobbus aberrans (Na) y en el follaje inoculado con diferentes tipos de inoculación de Phytophthora capsici. En plantas completas o con el tallo decapitado se inoculo micelio, en el follaje zoosporas asperjadas, por inmersión en una suspensión de zoosporas y también en la raíz. Se tuvieron experimentos con plantas susceptibles (var. Joe E. Parker) y resistentes (CM-334), infectadas o sin infectar con N. aberrans y 21 días posteriores a la inoculación (pi) con el nematodo se inocularon con P. capsici; bajo un diseño completamente al azar en cámaras bioclimáticas. De los 5 a los 30 días pi con el oomiceto (pio) se registró la longitud de necrosis (cm), la colonización de hoja, tallo o...
Palavras-chave: Chile CM-334; Fenoles; Flavonoides; PAL; Micelio; Phytophthora capsici; Follaje; Nacobbus aberrans; Zoosporas; Pepper CM-334; Phenols; Flavonoids; Mycelium; Foliage; Zoospores; Fitopatología; Doctorado.
Ano: 2011
URL: http://hdl.handle.net/10521/612

Uso de injertos y contenido de fenoles solubles totales en genotipos de jitomate (Lycopersicon esculentum Mill.) resistentes y susceptibles a Fusarium oxysporum f. sp. lycopersici raza 3.
Provedor de dados: 32
Autores: 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...
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

Selección de portainjertos de aguacate para tolerancia-resistencia a Phytophthora cinnamomi (Rands).
Provedor de dados: 32
Autores: Andrade Hoyos, Petra.
A nivel mundial, el intento por controlar la pudrición de la raíz causada por Phytophthora cinnamomi ha tenido un éxito limitado. La identificación de portainjertos resistentes es una opción para que prospere el cultivo de aguacate en condiciones de presión de inóculo con P. cinnamomi. En plantas de aguacate raza Mexicana de 1 a 2 años y en etapa de plántula, responden a la infección por el oomicete P. cinnamomi. Esta respuesta se debe a la variación genética basada en la supervivencia, y a la implicación de la formación de tilosas y depósito de fenoles como mecanismos de defensa histológica, así como la capacidad totipotencial después de la inoculación con el oomicete. Con el objetivo de seleccionar portainjertos de aguacate tolerantes-resistentes a P....
Palavras-chave: Phytophthora cinnamomi; Persea americana; Pudrición de raíz; Cancro; Mecanismos de defensa; Tilosas; Fenoles; Fitopatología; Doctorado; Root rot; Canker; Defense mechanisms; Tyloses; Phenols.
Ano: 2012
URL: http://hdl.handle.net/10521/1769

Performance of UASB reactors in two stages followed by post-treatment with activated sludge in wastewater batch of wet-processed coffee
Provedor de dados: 70
Autores: 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

Start-up of horizontal anaerobic reactors with sludge blanket and fixed bed for wastewater treatment from coffee processing by wet method
Provedor de dados: 70
Autores: 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

Antiviral activities of extracts and phenolic components of two Spondias species against dengue virus
Provedor de dados: 80
Autores: 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

Der Abbau von p-Hydroxybenzoesäure, Protocatechusäure und Gallussäure im Boden
Provedor de dados: 20
Autores: Kunze, Ch.
La velocidad de descomposición de tres fenólicos, el p-hidroxibenzoico, el protocatecúico y el gálico, los cuales se diferencian en el número de grupos OH, fue investigada en el suelo. Con el aumento de grupos OH aumenta también la velocidad de descomposición microbial. El ácido gálico se descompone más rápido que el protocatecúico y este a su vez más rápido que  el phidroxibenzoico.
Tipo: Journal Contribution
Palavras-chave: Phenols; Chemistry; Phenols; Chemistry; Http://aims.fao.org/aos/agrovoc/c_13300; Http://aims.fao.org/aos/agrovoc/c_1522.
Ano: 1972
URL: http://hdl.handle.net/1834/3430

False positives for tannin sorghum in non-tannin sorghum using the bleach test
Provedor de dados: 30
Autores: Awika, J. McDonough, C.M.
Palavras-chave: Organic acids; Pigments; Sorghum; Phenols; Anthocyanins; Aromatic compounds; Sampling; Grain; Environmental degradation; Environmental factors.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3240

Ten Myths about Tannins in Sorghums
Provedor de dados: 30
Autores: Rooney, L.
Palavras-chave: Organic acids; Sorghum; Antioxidants; Pigments; Phenols; Linseed; Aromatic compounds; HPLC; Bakery products; Polymers.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3264

Characterization and biological activity of condensed tannins from tropical forage legumes
Provedor de dados: 86
Autores: 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

Basic density and pulp yield relationship with some chemical parameters in eucalyptus trees
Provedor de dados: 86
Autores: Seca,Ana Maria Loureiro da; Domingues,Fernando Manoel de Jesus.
The objective of this work was to evaluate the use of basic density and pulp yield correlations with some chemical parameters, in order to differentiate an homogeneous eucalyptus tree population, in terms of its potential for pulp production or some other technological applications. Basic density and kraft pulp yield were determined for 120 Eucalyptus globulus trees, and the values were plotted as frequency distributions. Homogenized samples from the first and fourth density quartiles and first and fourth yield quartiles were submitted to total phenols, total sugars and methoxyl group analysis. Syringyl/guaiacyl (S/G) and syringaldehyde/vanillin (S/V) ratios were determined on the kraft lignins from wood of the same quartiles. The results show the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus globulus; Syringyl; Guaiacyl; Phenols; Methoxyl group; Kraft pulping.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2006001200001

Effect of fermentation time on phenolic content and antioxidant potential in Cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K.Schum.) beans
Provedor de dados: 109
Autores: 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

Structural changes in Psidium guajava 'Paluma' leaves exposed to tropospheric ozone
Provedor de dados: 39
Autores: Tresmondi,Fernanda; Alves,Edenise Segala.
Psidium guajava 'Paluma' has being tested as an ozone (O3) bioindicator and responds with pigmentation between the veins on the adaxial surface, due to the accumulation of phenolic compounds. These compounds act as non-enzymatic antioxidants that neutralize reactive oxygen species (ROS), formed from O3. This study aimed to evaluate the leaf structure of plants with and without visible symptoms and to establish these symptoms at the cellular level. Beside this we also aimed to detect structural changes that can minimize the effects of the O3 on the plant. The accumulation of phenolic substances, stomatal density and structural changes in P. guajava 'Paluma' leaf tissues exposed during the four seasons of the year were evaluated. The study was conducted at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioindicator; Phenols; Leaf anatomy; Oxidative stress; Stomatal density.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000300005

Establishment and content of sugars and phenols in Physalis callus obtained from different explants and concentrations of bap and naa  - doi: 10.4025/actascibiolsci.v36i1.18074
Provedor de dados: 3
Autores: 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

Antiproliferative activity in tumor cell lines, antioxidant capacity and total phenolic, flavonoid and tannin contents of  Myrciaria floribunda
Provedor de dados: 42
Autores: 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

Lipids, proteins, phenolic composition, antioxidant and antibacterial activities of seeds of peanuts (Arachis hypogaea l) cultivated in Tunisia
Provedor de dados: 48
Autores: Sebei,Khaled; Gnouma,Asma; Herchi,Wahid; Sakouhi,Faouzi; Boukhchina,Sadok.
Fatty acid composition of peanut seed oil in four varieties cultivated in Tunisia showed that linoleic (C18:2), oleic (C18:1) and palmitic (C16) acids account for more than 84% for Chounfakhi and Massriya and for more than 85% of the total fatty acids of Trabilsia and Sinya seed oil respectively. Seed oil contents were significantly different (P &amp;#8804; 0.05) and did not exceed 48%. The study of total phenolics revealed that Chounfakhi contained more total phenolics (2.1 mg GAE/g DW), followed by the Massriya and Sinya cultivars (1.35 mg GAE/g DW for each); Trabilsia presented the lowest total phenolic content with 1 mg GAE/g DW. Considerable antiradical ability was found, especially in the Trabilsia peanut seed cultivar (IC50 = 1550 &amp;#956;g/ml),...
Tipo: Journal article
Palavras-chave: Arachis hypogea; Oil; Sterols; Phenols; Antioxidant activity; Antibacterial activity.
Ano: 2013
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602013000300006

Effect of Salicylic Acid, 2,4-D and 2i-P on the Production of Secondary Metabolites in Garcinia brasiliensis Mart. Callus
Provedor de dados: 52
Autores: 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

Effects of Allelochemicals from Ficus microcarpaon Chlorella pyrenoidosa
Provedor de dados: 52
Autores: 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

A new enzymatic process for the treatment of phenolic pollutants
Provedor de dados: 52
Autores: Palma,Mauri Sergio Alves; Horn,Harald; Zilli,Mario; Pigatto,Gisele; Converti,Attilio.
This work aimed to develop a new economic enzymatic process to treat the phenolic pollutants using pure tyrosinase in stirred vessel and adopting temperature (T), pH, rotational speed (N), initial phenol (C P,o) and enzyme (C T) concentrations as independent variables. Experimental data of the residual phenol concentration (C P) were used to calculate the oxidation efficiency (η), initial oxidation rate (-r o) and time required to reach the end of reaction (t) that were selected as the responses. Under the optimal conditions (T = 45°C, pH 6.6, N = 400 rpm, C P,o = 100 ppm and C T = 50 U/mL), η was 88.1%, -r o = 10.2 mg L-1 min-1, t = 40 min. These results suggested that tyrosinase-rich crude extracts from vegetable byproducts could be quite promising.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phenols; Tyrosinase; Wastes; Enzymatic treatment.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000400016

The effect of lead on the phytochemistry of Tithonia diversifolia exposed to roadside automotive pollution or grown in pots of Pb-supplemented soil
Provedor de dados: 61
Autores: Olivares,Elizabeth.
Tithonia diversifolia, a ruderal weedy species utilized in agroforestry, is widely distributed in the tropics, often being found in wasteland, margins of polluted city rivers and roadsides. The objective of this study was to compare plants sampled at a light and heavy traffic roadside for metal concentration and foliar compounds which may be related to senescence and/or detoxification of metals. The field survey was followed by an experiment in pots of Pb-acetate-supplemented soil to verify if the same response is obtained under controlled conditions with regard to Pb. The concentration of Pb in leaves and roots of plants sampled at a heavy traffic roadside was higher than in samples from a light traffic site. The content of Cr, Al, Fe, Cu and Ni was also...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Metals; Mexican sunflower; Phenols; Pollution; Weeds.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000300004

Relation between Seed Appearance and Phenolic Maturity: A Case Study Using Grapes cv. Carménère
Provedor de dados: 117
Autores: Fredes,Claudio; Von Bennewitz,Eduardo; Holzapfel,Eduardo; Saavedra,Felipe.
Sensory evaluation of grapes (Vitis vinifera L.) plays a key role in determining the harvest time in grapevine varieties. The harvest time of cv. Carménère is one of the latest of Chile. During the season 2007-2008, the evolution of the appearance of ‘Carménère’ seeds was evaluated as a harvest criterion, comparing it with the chemical and phenolic ripening. The samples were obtained from an organic vineyard located in Curicó Valley, Chile. Starting at 16 ºBrix, 100 seed berries samples were collected weekly from medium vigor vines in order to register photographically the ventral and dorsal sides of each seed. In addition to the seed tannins percentage, the extractable anthocyanins, total anthocyanins and total polyphenols index, as well as the titratable...
Tipo: Journal article
Palavras-chave: Seed development; Harvest index; Seed color; Phenols.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300005

Phytochemical Evaluation of Wild and Cultivated Pepper (Capsicum annuum L. and C. pubescens Ruiz &amp;amp; Pav.) from Oaxaca, Mexico
Provedor de dados: 117
Autores: Vera-Guzmán,Araceli Minerva; Chávez-Servia,José Luis; Carrillo-Rodríguez,José Cruz; G. López,Mercedes.
Reports of the last decade show that some types of food and spices included in the human diet, such as pepper (Capsicum annuum L.) can have a positive effect on human health. The Mexican pepper germplasm is poorly documented with regard to variety and the amount of phytochemical compounds that it contains. In the present study, the variation of phytochemical compounds was evaluated in nine fruit variants (morphotypes) of wild and cultivated pepper grown in Oaxaca. ANOVA detected significant differences among pepper morphotypes and ripeness stages of fruits; vitamin C, total phenols, flavonoids, P-carotene, coordinated chromatic of color, and capsaicinoids. The highest values of vitamin C were found in 'Tabaquero', 'Guero' and 'Costeño' morphotypes (151.6...
Tipo: Journal article
Palavras-chave: Capsaicionids; Carotenoids; Phenols; Flavonoids; Vitamin C.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400013

Quality, bioactive compounds, and antioxidant activity of serrano chili peppers cultivated in volcanic rock-vermicompost and nutrient solutions
Provedor de dados: 118
Autores: Cruz-Crespo,Elia; Sumaya-Martínez,María T; Can-Chulim,Álvaro; Pineda-Pineda,Joel; Bugarín-Montoya,Rubén; Aguilar-Benítez,Gisela.
E. Cruz-Crespo, M.T. Sumaya-Martínez, Á. Can-Chulim, J. Pineda-Pineda, R. Bugarín-Montoya and G. Aguilar-Benítez. 2015. Quality, bioactive compounds, and antioxidant activity of serrano chili peppers cultivated in volcanic rock-vermicompost and nutrient solutions. Cien. Inv. Agr. 42(3): 375-384. The concentration of antioxidant compounds, the antioxidant activity, physical quality characteristics, and the yield of serrano chilies (Capsicum annuum L.) are affected by agricultural practices, such as the use of vermicompost in containers combined with chemical fertilizers, the investigations of which have focused on yield. A study was performed to determine whether vermicompost mixed with volcanic rock and the ionic composition of the nutrient solution affect...
Tipo: Journal article
Palavras-chave: Ascorbic acid; Capsicum annuum; Phenols; Yields.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000300006