Produção Nacional
Revisado por pares
Karina Ferreira Chueng, Heloísa Helena Gomes Coe, Cristina Helena Ribeiro Rocha Augustin, Kita Macário, Sarah Domingues Fricks Ricardo, Alessandra Mendes Carvalho Vasconcelos,
... twelve soil profiles sampled in three distinct areas (Guinda, Morrinhos and Chapadinha) show no major overall changes ... there are variations along the slope profiles. In Guinda and Morrinhos, phytolith stocks do not follow the ... stress) indices were very high (48–94%). In Guinda and Chapadinha, the phytoliths present a high degree ...
Tópico(s): Amazonian Archaeology and Ethnohistory
2019 - Elsevier BV | Journal of South American Earth Sciences
Produção Nacional
Leonardo Lopes-Silva, Luiz Guilherme Knauer,
Os grupos Costa Sena e Guinda constituem duas das principais unidades estratigráficas aflorantes ao longo da Serra do Espinhaço na região de Diamantina (MG). O primeiro foi ... xistos) e Bandeirinha (quartzitos e metarruditos). O Grupo Guinda, formado por quartzitos, metarruditos e filitos, é subdividido ... Formação Bandeirinha, posicionando-a como base do Grupo Guinda. As relações de campo indicam, contudo, contato gradacional ... angular e erosiva no contato com o Grupo Guinda. As diferenças de estilos estruturais sugerem que a ...
Tópico(s): Geological and Geochemical Analysis
2013 - | Revista Geonomos
James W. Haggart, Peter D. Ward,
... along the western Sacramento Valley. Strata of the Guinda and Forbes Formations represent submarine fan-channel to ... shallowing Late Cretaceous fore-arc basin. The Santonian Guinda Formation, a massive sand unit deposited in fan- ...
Tópico(s): Paleontology and Stratigraphy of Fossils
1984 - Geological Society of America | Geological Society of America Bulletin
Kathleen D. Surpless, Stephan A. Graham, Joseph L. Wooden, Michael McWilliams,
... the Cortina/Rumsey petrofacies boundary is within the Guinda Formation, when in fact the Rumsey petrofacies extends down to the base of the Guinda Formation and the Cortina petrofacies includes the Venado ...
Tópico(s): Geology and Paleoclimatology Research
2003 - Geological Society of America | Geological Society of America Bulletin
... in descending order are as follows: Forbes formation, Guinda formation, Funks formation, Sites formation, Yolo formation, and ...
Tópico(s): Paleontology and Stratigraphy of Fossils
1943 - American Association of Petroleum Geologists | AAPG Bulletin
... by presenting spatial patterning in Aztec Red Wares ( guinda or rojo pulido ) ceramics. By combining both stylistic ...
Tópico(s): Pleistocene-Era Hominins and Archaeology
2009 - Cambridge University Press | Latin American Antiquity
Pedro Ângelo Almeida-Abreu, Friedrich Ewald Renger,
... supergroup includes sedimentary and volcanic rocks of the Guinda Group deposited between 1750 and 1700 Ma in ...
Tópico(s): Geography and Environmental Studies
2002 - Sociedade Brasileira de Geologia | Brazilian Journal of Geology
Ángeles Guinda, A. Lanzón, José Julián Ríos, T. Albi,
Aislamiento y cuantificación de los componentes de la hoja del olivo: extracto de hexano.Se analizan los principales componentes del extracto de hexano de hojas de olivo, siguiendo un esquema analítico basado en la extracción con hexano y posterior separación de grupos de compuestos, según su polaridad, mediante cromatografía en columna y en capa fina.Se separan e identifican los siguientes componentes: hidrocarburos, ceras ésteres, triglicéridos
Tópico(s): Nuts composition and effects
2002 - Spanish National Research Council | Grasas y Aceites
Ángeles Guinda, M. Carmen Dobarganes, Ma Victoria Ruiz Méndez, Manuel Mancha,
Abstract High‐oleic high‐palmitic sunflower oil (HOHPSO) has been obtained from field‐grown mutant sunflower seeds CAS‐12. The fatty acid and triacylglycerol compositions, the thermo‐oxidative stability and the physical properties of the HOHPSO were determined and compared with those of the conventional and high oleic sunflower oils and those of a liquid fraction of palm oil (olein). The major fatty acids of the HOHPSO were monoenes (57.7% oleic, 7.3% palmitoleic) and palmitic (27, 8%), while the content ...
Tópico(s): Lipid metabolism and biosynthesis
2003 - Wiley | European Journal of Lipid Science and Technology
M. Martín‐Polvillo, T. Albi, Ángeles Guinda,
Abstract Methods are described for the direct determination of Al, Cr, Cu, Fe, Ni and Pb by atomic absorption spectrophotometry in sunflower oil and olive oils. Metallic contamination after storage under different controlled conditions and in contact with carbon steel, austenitic steel, ferritic steel and aluminum was examined. Additionally, chemical characteristics related to quality (acid value, peroxide value, K 270 and oxidative stability) and some physical parameters of interest were evaluated ...
Tópico(s): Heavy metals in environment
1994 - Wiley | Journal of the American Oil Chemists Society
José Antonio Cayuela, Mirela Rada, María del Camino, M. Benaı̈ssa, Abdelaziz Elamrani, Ángeles Guinda,
Abstract The present study was conducted to know the possible influence of the seed treatment, method of extraction and geographical origin on the quality and chemical composition of argan oil. Artisanally and semiautomatically extracted argan oils, from roasted and unroasted seeds, from interior and coast areas, were studied. The quality parameters analyzed were acid value, peroxide value, K 232 and K 270 , triacylglycerols and fatty acid composition, polar compounds, total phenols, tocopherol content ...
Tópico(s): Phytochemicals and Antioxidant Activities
2008 - Wiley | European Journal of Lipid Science and Technology
Xabier Guinda, José A. Juanes, Araceli Puente, José A. Revilla,
The selection of adequate methodologies for the assessment of different biological quality elements is urgently needed for the application of the water framework directive (WFD 2000/60/EEC). In the case of macroalgae in coastal waters of the North East Atlantic, two methodologies have been proposed: the reduced species list (RSL) index and the quality of rocky bottoms (CFR) index. Both methods use multimetric approaches to evaluate the quality of macroalgae assemblages, which are based on community ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2008 - Elsevier BV | Ecological Indicators
Ángeles Guinda, Mirela Rada, Teresa Delgado, José M. Castellano,
Abstract This work reports for the first time the presence of pentacyclic triterpenic acids in Argania spinosa . By solid/liquid extraction with absolute ethanol and GC‐FID analysis, we report that ursolic acid is the major triterpene in the leaf and fruit of argan (0.10–0.44% DW), followed by significant amounts of oleanolic acid (0.05–0.19% DW). Their contents in the leaf were four times higher than in the fruit. Minor levels of betulinic and maslinic acids were also determined in the fruit pulp. ...
Tópico(s): Nuts composition and effects
2010 - Wiley | European Journal of Lipid Science and Technology
Ángeles Guinda, Mirela Rada, Teresa Delgado, Pilar Gutiérrez-Adánez, José M. Castellano,
This work establishes a new procedure for the extraction and analysis of pentacyclic triterpenes, with which fruits and leaves from three Spanish olive cultivars ("Picual", "Hojiblanca", and "Arbequina") has been studied. The leaf contains important amounts of oleanolic acid (3.0-3.5% DW), followed by significant concentrations of maslinic acid and minor levels of ursolic acid, erythrodiol, and uvaol. The abundance and profile of triterpenoids change during the leaf ontogeny. In the fruit, triterpenes ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2010 - American Chemical Society | Journal of Agricultural and Food Chemistry
Mirela Rada, Ángeles Guinda, José Antonio Cayuela,
Abstract Molecular distillation, or short‐path distillation (SPD), is particularly appropriate for processing of low‐volatility compounds, which are easily altered at high temperature. Olea europaea L. leaves constitute an olive tree by‐product very interesting for their natural antioxidants content. In this research, molecular distillation technology has been applied to obtain high‐value‐added compounds by the SPD fractionation of an olive tree leaf extract. The process consists of two stages: (a) ...
Tópico(s): Free Radicals and Antioxidants
2007 - Wiley | European Journal of Lipid Science and Technology
José A. Juanes, Xabier Guinda, Araceli Puente, José A. Revilla,
Despite the great importance of shallow rocky communities (<30 m deep) due to their contribution to the biodiversity of coastal waters, most efforts in ecological status assessment of marine waters have been carried out in the implementation of soft bottom biotic indices. Therefore, in this paper, a methodology for the environmental evaluation of coastal rocky communities for the Bay of Biscay (NE Atlantic), the CFR index (Quality of Rocky Bottoms), is presented. This index is based on the analysis ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2007 - Elsevier BV | Ecological Indicators
Xabier Guinda, José A. Juanes, Araceli Puente, Beatriz Echavarri-Erasun,
The extensive field work carried out over the last century has allowed the worldwide description of general distribution patterns and specific composition of rocky intertidal communities. However, the information concerning subtidal communities on hard substrates is more recent and scarce due to the difficulties associated with working in such environments. In this work, a non-destructive method is applied to the study and mapping of subtidal rocky bottom macroalgae assemblages on the coast of Cantabria ( ...
Tópico(s): Coastal wetland ecosystem dynamics
2011 - Elsevier BV | Journal of Sea Research
Mirela Rada, Valentina Ruiz‐Gutiérrez, Ángeles Guinda,
Terpenic acids are under development as therapeutic agents in numerous treatments. In support of pharmacokinetic and toxicological evaluations, a robust assay based on high-performance liquid chromatography (HPLC) was developed for the analysis of the terpenoids in human serum. For a clear understanding of the differences in biological activity of these compounds, the interactions between oleanolic or betulinic acids and human serum protein have been studied by ultraviolet−visible (UV−vis) absorption ...
Tópico(s): Pharmacological Effects of Natural Compounds
2011 - American Chemical Society | Journal of Agricultural and Food Chemistry
José Antonio Cayuela, Mirela Rada, José Julián Ríos, T. Albi, Ángeles Guinda,
A study was carried out to determine the changes in phenolic composition induced by tuberculosis infection in olive trees. Four ethanolic extracts were compared: olive leaf from shoots affected by Pseudomonas savastanoi pv. Savastanoi, nodules induced by this bacteria, leaf from healthy (asymptomatic) shoots, and shoots. Among the differences found, the presence of a phenolic compound in nodules was significant in much larger quantities than in leaf or shoots. Mass spectrometric analysis showed this ...
Tópico(s): Phytochemicals and Antioxidant Activities
2006 - American Chemical Society | Journal of Agricultural and Food Chemistry
RESUMEN Uso de residuos sólidos a partir de la industria del olivoLa investigación de nuevos aprovechamientos del olivar y en particular de lo subproductos del proceso de producción del aceite, tiene gran relevancia tanto en la economía como en el medio ambiente de los pueblos donde se desarrolla este cultivo.Son numerosos los trabajos publicados sobre la composición química de la aceituna y el aceite de oliva, en cambio sólo existen algunos estudios sobre el aislamiento e identificación de los ...
Tópico(s): Essential Oils and Antimicrobial Activity
2006 - Spanish National Research Council | Grasas y Aceites
Ibtissam Ourrach, Mirela Rada, María del Camino, M. Benaı̈ssa, Ángeles Guinda,
Detección de aceite argán adulterado con aceites vegetales: Nuevos
Tópico(s): Identification and Quantification in Food
2012 - Spanish National Research Council | Grasas y Aceites
Produção Nacional
Luiz Guilherme Knauer, A. R. Schrank,
... of some unique igneous rocks.Typical of the “Guinda Group”, basal portion of the Espinhaço Supergroup, with ...
Tópico(s): Geography and Environmental Studies
1993 - | Revista Geonomos
... the Espinhaço Rift, especially of the area Sopa - Guinda nearDiamantina (Fig. 1) lead to the identification of ...
Tópico(s): Geochemistry and Geologic Mapping
1996 - | Revista Geonomos
Ángeles Guinda, A. Lanzón, T. Albi,
An analytical method has been developed to study, as a whole, the hydrocarbon fractionother than squaleneof virgin olive oils. This method was applied to the study of oils from representative olive varieties of Spanish olive groves: Arbequina, Cornicabra, Empeltre, Hojiblanca, and Picual. The composition profiles of some of the hydrocarbons of oils from the above mentioned varieties are shown in this paper. The ranges of concentration in milligram per kilogram of oil of these hydrocarbons are also ...
Tópico(s): Edible Oils Quality and Analysis
1996 - American Chemical Society | Journal of Agricultural and Food Chemistry
Javier Tabera, Ángeles Guinda, Alejandro Ruiz‐Rodríguez, Francisco J. Señoráns, Elena Ibáñez, T. Albi, Guillermo Reglero,
Countercurrent supercritical fluid extraction (CC-SFE) at a pilot scale plant was used for fractionation of high-added-value products from a raw extract of olive leaves in hexane. Compounds found in the raw extract were waxes, hydrocarbons, squalene, beta-carotene, triglycerides, alpha-tocopherol, beta-sitosterol, and alcohols. The CC-SFE extraction process was investigated according to a 2(3) full factorial experimental design using the following variables and ranges: extraction pressure, 75-200 ...
Tópico(s): Chemical Thermodynamics and Molecular Structure
2004 - American Chemical Society | Journal of Agricultural and Food Chemistry
Ángeles Guinda, María del Camino, A. Lanzón,
Abstract A method was studied for utilization of olive leaf, which is a byproduct of olive tree pruning and olive oil production. Our strategy involves two stages. The first is a simple procedure for isolating oleanolic acid, a compound with known biological activity. The second stage involves supplementation of different types of oil with this triterpenic acid. Two protocols were used for incorporating this acid into oils, either as a solid or as a solution, at concentrations from 200 to 1000 ppm. ...
Tópico(s): Phytochemistry and Bioactive Compounds
2004 - Wiley | European Journal of Lipid Science and Technology
Amalia Rodrı́guez, Marı́a del Mar Graciani, Ángeles Guinda, María Múńoz, Marı́a Luisa Moyá,
The reaction of dehydrochlorination of 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane, DDT, with hydroxide ions has been studied in aqueous micellar solutions of N-tetradecyl-N,N-dimethyl-3-ammino-1-propanesulfonate, SB3-14, and N-hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate, SB3-16. A simple expression for the observed rate constant, kobs, based on the pseudophase model, could explain the influence of changes in the surfactant concentration on kobs. The kinetic effects of added electrolytes ( ...
Tópico(s): Photochemistry and Electron Transfer Studies
2000 - American Chemical Society | Langmuir
Xabier Guinda, José A. Juanes, Araceli Puente,
The Quality of Rocky Bottoms index (CFR by its Spanish acronym) is a multimetric method used for the assessment of macroalgae communities in accordance to the European Water Framework Directive. In order to improve the precision and accuracy of the assessments, the index was adjusted using a continuous scoring system. The index was tested at 184 intertidal and 57 subtidal stations located in the Atlantic coasts of Spain, Portugal and France. The anthropogenic pressure level of the stations was estimated ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2014 - Elsevier BV | Marine Environmental Research
Nancy Chasquibol, Chellah del Aguila, Juan C. Yácono, Ángeles Guinda, Wenceslao Moreda, Raquel B. Gómez‐Coca, María del Camino,
This work deals with the characterization of the main glyceridic and unsaponifiable components of oils obtained from Sacha inchi (Plukenetia huayllabambana L.) seed ecotypes collected during two harvests in the Department of Amazonas in Peru. The seed-oil yield was 30.3–41.2%; standing out are the high percentages of the ω3- and ω6-fatty acids series whose ranges lie within those of the present Regulation for Sacha inchi oils. Triacylglycerols with even equivalent carbon number (ECN; 36–42) were the ...
Tópico(s): Edible Oils Quality and Analysis
2014 - American Chemical Society | Journal of Agricultural and Food Chemistry
José M. Castellano, Ángeles Guinda, Teresa Delgado, Mirela Rada, José Antonio Cayuela,
Oleanolic acid (OA), a natural component of many plant food and medicinal herbs, is endowed with a wide range of pharmacological properties whose therapeutic potential has only partly been exploited until now. Throughout complex and multifactorial mechanisms, OA exerts beneficial effects against diabetes and metabolic syndrome. It improves insulin response, preserves functionality and survival of β-cells, and protects against diabetes complications. OA may directly modulate enzymes connected to insulin ...
Tópico(s): Genomics, phytochemicals, and oxidative stress
2013 - American Diabetes Association | Diabetes