Now showing items 509-528 of 2801

    • Yáñez Soto, Claudia; Araya, M.; Bollo Dragnic, Soledad (SPRINGER, 2010-10)
      For first time the complexation of bentazon (Btz) with native b-cyclodextrin (b-CD) and modified sulfobutylether- b-CD (SBE-CD) was studied by differential pulse voltammetry. In addition, a spectrophotometry UV–Visible study ...
    • Yañez, C.; Araya, M.; Bollo Dragnic, Soledad (2010)
      For first time the complexation of bentazon (Btz) with native β-cyclodextrin (β-CD) and modified sulfobutylether-β-CD (SBE-CD) was studied by differential pulse voltammetry. In addition, a spectrophotometry UV-Visible study ...
    • Bunel Torrealba, Sergio; Ibarra, Carmen; Moraga, Exequiel; Parada Aliste, José; Blasko, Andrei; Bunton, Clifford A. (Sociedad Chilena de Química, 1997)
      D-β-Mannosamine reacts with cobalt(III) bis-phenanthroline to form a single 1:1 complex with the ∆ configuration at Co(III) which can be isolated as the stable triiodide salt.
    • Jullian Matthaei, Carolina; Orosteguis, Teresita; Pérez Cruz, Fernanda; Sánchez, Paulina; Mendizábal Emaldía, Fernando; Olea Azar, Claudio (PERGAMON-ELSEVIER SCIENCE LTD, 2008-11-01)
      Properties of inclusion complexes between morin (M) and beta-cyclodextrin (beta CD), 2-hydroxypropyl-beta-cyclodextrin (HP beta CD) and Heptakis (2,6-O-di methyl) beta-cycloclextrin (DM beta CD) such as aqueous solubility ...
    • Jullian Matthaei, Carolina; Orosteguis, Teresita; Pérez Cruz, Fernanda; Sánchez, Paulina; Mendizábal Emaldía, Fernando; Olea Azar, Claudio (2008)
      Properties of inclusion complexes between morin (M) and β-cyclodextrin (βCD), 2-hydroxypropyl-β-cyclodextrin (HPβCD) and Heptakis (2,6-O-di methyl) β-cyclodextrin (DMβCD) such as aqueous solubility and the association ...
    • Jullian Matthaei, Carolina; Moyano, L.; Yáñez Soto, Claudia; Olea Azar, Claudio (PERGAMON-ELSEVIER SCIENCE LTD, 2007-05)
      The slightly water-soluble flavonoid quercetin (QUE) and its inclusion with either beta-cyclodextrin (beta CD), hydroxypropyl-beta-cyclodextrin (HP-beta CD) or sulfobutyl ether-beta-cyclodextrin (SBE-beta CD) were investigated. ...
    • Parada Aliste, José; Bunel Torrealba, Sergio; Ibarra, Carmen; Larrazábal Rojas, Guillermo; Moraga, Exequiel; Gillitt, N. D.; Bunton, Clifford A. (ELSEVIER SCI LTD, 2000-10-20)
      The Delta-[Co(III)bis(phenanthroline)(sucrose)](3+) complex forms with little perturbation of the sucrose conformation, and complexation by HO-2(g) and HO-1(f).
    • Blasko, Andrei; Bunton, Clifford A.; Moraga, Exequiel; Bunel Torrealba, Sergio; Ibarra, Carmen (ELSEVIER SCIENCE BV, 1995-12-20)
      L-Sorbose and two molecules of 1,10-phenanthroline form a complex with Co(III) which has the Lambda configuration about Co(III), based on CD and ORD spectra, The H-1 NMR signals of alpha-L-sorbopyranose and its mixed ...
    • Moraga, Exequiel; Bunel Torrealba, Sergio; Ibarra, Carmen; Blasko, Andrei; Bunton, Clifford A. (ELSEVIER SCIENCE BV, 1995-03-01)
      D-Fructose and 1,10-phenanthroline form complexes with Co(III). Configurations about Co(III) are assigned from the CD and ORD spectra of the separated Lambda and Delta diastereomers, and Lambda strongly predominates in the ...
    • Bunel Torrealba, Sergio; Ibarra, Carmen; Moraga, Exequiel; Calvo Pérez, Víctor; Blasko, Andrei; Bunton, Clifford A. (ELSEVIER SCIENCE BV, 1993-02-01)
      D-Glucosamine and ammonia, 1,2-ethylenediamine, or 1,10-phenanthroline form complexes with Co(III)*. The complexes are: [Co(NH3)3-H2O-D-glucosamine]3+, [Co(en)2.D-glucosamine]2+ and [Co(phen)2.D-glucosamine]3+. Formation ...
    • Moya, Sergio; Pastene, Ruben; Sariego, Renato; Sartori, Rebeca; Aguirre, Pedro; Le Bozec, Hubert (Elsevier Ltd, 1996)
      The preparation and spectroscopic properties of mononuclear cationic complexes of rhodium(I) coordinated to the diolefin 2,5-norbornadiene (NBD) and to the heterocyclic nitrogen ligands 6,7-dihydrodipyrido-[2,3-b:3′,2′-j ...
    • Arada Pérez, María de los Ángeles; Yardani-Pedram, Mehrdad (2003)
      En este trabajo se realiza una evaluación estadística para conocer cómo influye la concentración del ionóforo y el disolvente mediador (DM) en la pendiente (S) y el Límite Práctico de Detección (LPD) de siete electrodos ...
    • Arada Pérez, María de los Angeles; Yardani Pedram, Mehrdad (Asociación de Químicos e Ingenieros del Instituto Químico de Sarría, 2003)
      The statistical evaluation of seven ion selective chemical sensors (ISE) for nitrate ion determination, based on polymeric membranes on a conductive support, has been carried out in this work. This was donw in order to ...
    • Contreras Villacura, Elsa; Masson Salaué, Lilia; Fuentes T., R.; Abarca A., M. (Universidad de Santiago de Chile. Dirección de Investigaciones Científicas y Tecnológicas, 1980)
      Se analizó por cromatografía gas-líquido los componentes del aceite esencial de limón de "pica" (Citrus aurantifolia) y común (Citrus limonum). Se detectaron 33 componentes en el caso de limón de "pica" y 30 para el limón ...
    • Préndez Bolívar, María Margarita; Zolezzi Carvallo, Santiago (Instituto Antártico Chileno, 1982)
      La especial situación geográfica de la Antártica y sus características meteorológicas hacen que el estudio de sus aerosoles atmosféricos sea particularmente interesante. En este trabajo se ha estudiado la composición ...
    • Romero, Nalda; Robert Canales, Paz; Masson Salaué, Lilia; Pineda López, Rafael (Sociedad Latinoamericana de Nutrición, 2000)
      En el último tiempo se ha puesto un gran énfasis en el c.'<1udiode la presencia de ácidos grasas potiins3turados de Ja familia omega~3 en aJimentos de origen marino. debido a sus efectos beneficiosos descritos en relación ...
    • Mella Rojas, María Angélica; Borguenson Gallardo, Ricardo Vicente; Masson Salaué, Lilia (Sociedad Chilena de Tecnología de Alimentos, 1987)
      Se analizan muestras de chocolates: con leche en barra, de fantasía en barra, en polvo amargo, en polvo dulce y coberturas de helados para determinar la calidad y cantidad de la materia grasa como también el valor calórico ...
    • Nocetti, Diego; Núñez, Hipólito; Puente Díaz, Luis; Espinosa Escalona, Alejandra; Romero, Fernando (Wiley, 2020)
      Goldenberry is a wild fruit that has been widely used for centuries, mainly in folk medicine. Most studies of goldenberry have focused on the fruit, but new research has studied its byproducts, which were considered to ...
    • Paulino, M.; Iribarne, F.; Hansz, M.; Vega, M.; Seoane, G.; Cerecetto, Hugo; Di Maio, R.; Caracelli, I.; Zukerman-Schpector, J.; Olea Azar, Claudio; Stoppani, A. O. M.; Berriman, M.; Fairlamb, A. H.; Tapia, O. (ELSEVIER SCIENCE BV, 2002-04-26)
      A computer assisted molecular modeling was used to design molecules having a shape complementary to the active site of glutathione reductase (GR) and trypanothione reductase (TR). The designed 5-nitro compound derivatives. ...
    • Pando, María Elsa; Bravo, Beatriz; Berrios, Macarena; Galdames, Andrea; Rojas, Catalina; Romero, Nalda; Camilo, Conrado; Encina, Cristian; Rivera, Matías; Rodríguez, Alicia; Aubourg, Santiago (Institute of Agricultural and Food Information, 2014)
      The urea complexation was used to concentrate n-3 fatty acids (FA) from crude and refined commercial salmon oils. The experimental procedure included salmon oil saponification, free fatty acid (FFA) collection, formation ...