Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 4041-4060 of 5056
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(Chile, Ministerio de Agricultura - Instituto de Investigaciones Veterinarias, 1952)De los diferentes métodos que se emplean para la valoración de la riboflavina en productos alimenticios, se distinguen tres por sus resultados mas homogéneos y satisfactorios: el fluorimétrico, el microbiológico y el animal ...
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Comparative SCF MO studies for some histamine analogues as agonists of the H2 receptor of histamine (Sociedad Chilena de Química, 1999)This paper presents SCF AM1 and CNDO/2 RF calculations of the potential energy surface of histamine monocation (HA) and the agonists 2-(4-thiazolyl)ethylamine (TIA) and 2-(4-oxazolyl)ethylamine (OXA). the similarity of ...
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Une méthode simple pour le traitement des filtres employés dans l'etude des aerosols atmosphériques. (Akadémiai Kiadó, 1982)A simple and rapid method for the multielement routine analysis of atmospheric particulate matter is described. The samples collected on four different types of filters were treated with HNO3 and HCl at 110-120 ºC in pyrex ...
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(Sociedad Chilena de Tecnología de Alimentos, 1976)Debido al consumo relativamente elevado de las salsas de tomate en el país y como una contribución a la TABLA DE COMPOSICION QUIMICA DE LOS ALIMENTOS CHILENOS, se consideró de interés conocer la composición química de las ...
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(Sociedad Chilena de Tecnología de Alimentos, 1976)La limpieza constituye una operación crítica en la industria alimentaria. Generalmente se tiende a considerar como impurezas o suciedad solamente a materias tales como tierra, pesticidas, microorganismos, grasas, carbohidratos, ...
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(Sociedad Chilena de Tecnología de Alimentos, 1976)En un estudio microbiológico realizado en cuatro plantas procesadoras de langostinos de la zona litoral central, se encontraron valores de Staphylococcus coagulasa positiva demasiado elevados como para ser atribuídos ...
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(ELSEVIER SCIENCE SA, 2000-12-15)The crystalline ion pair [Co-2{OOC-CCo3(CO)(9)}(5), C10H6(N(CH3)(2))(2)H] (1) presents unusual magnetic properties. The X-band EPR spectrum of 1 at room temperature presents two unresolved bands at g = 1.98 and 4.55. At a ...
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(PORTLAND PRESS, 1992-04)Beta-glucosidade was purified from the culture supernatant of penicillium purpurogenum. The purified enzyme was homogeneous on both nondenaturing and sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis. The ...
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CULTURE CONDITIONS FOR ENHANCED CELLULASE PRODUCTION BY A NATIVE STRAIN OF PENICILLIUM-PURPUROGENUM (RAPID SCIENCE PUBLISHERS, 1994-05)A cellulolytic wild-type strain of Penicillium purpurogenum was isolated from a soil sample in southern Chile. It grew best at 28-degrees-C from an inoculum of 4 x 10(7) spores/100 ml medium. Highest endoglucanase activity ...
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(ELSEVIER SCIENCE BV, 1995-07-15)The fungus Penicillium purpurogenum produces several extracellular xylanases. The two major forms (xylanases A and B) have been purified and characterized. After ammonium sulfate precipitation and chromatography in Bio-Gel ...
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(SOC CHILENA QUIMICA, 2007-09)The aim of this work is based in the reduction of independent variables in multivariate regression analysis to one by means a vector dot product (E-3). By this way, it is omit the orthogonalized procedure to obtained valid ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 1999)Reaction of (CO)(9)Co-3(mu(3)-CCOOH) with metal trifluoroacetates leads to the isolation of Cr-2{mu-OOC-CCo3(CO)(9)}(2){mu-OOCCF3}(2)(THF)(2), 1, and Sm-2{mu-OOCCCo3(CO)(9)}(2){mu-OOCCF3}(4){(CO)(9)Co3CCOOH}(2)(THF)(2). ...
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(PERGAMON-ELSEVIER SCIENCE LTD, 2000-08)Chemical modification of potato apyrase suggests that tryptophan residues are close to the nucleotide binding site. K-d values (+/- Ca2+) for the complexes of apyrase with the non-hydrolysable phosphonate adenine nucleotide ...
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(ELSEVIER SCIENCE BV, 1997-03-18)The cDNA, for xylanase B from Penicillium purpurogenum was cloned and sequenced. This DNA encodes a protein of 208 amino acids which is expected to yield a protein of 183 residues upon processing of the N terminus. The ...
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(P J D PUBLICATIONS LTD, 1999)We have studied the enzymatic gelatinolytic activity of matrix metalloproteinases (MMPs) present in cerebrospinal fluid (CSF) of samples obtained from 67 individuals, twenty-one nonneurological patients (considered controls) ...
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(SOC CHIMICA ITALIANA, 1989-11)A 300 mg controlled-reelase theophylline formulation was developed as a tablet prepared by wet granulation using the acrylic resins Eudagrit S 100R and Eudagrit RSPMR. The tablet was compared with a marketed controlled-release ...
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(Pergamon Press, 1976)
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(Elsevier Inc., 1986)The lignolytic capacity of some natural bacterial isolates eas examined. Strains were selected from samples of decaying wood by growth in a minimal medium containing aromatic compounds with a structural relationship to ...
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(Sociedad Chilena de Química, 1998)En este trabajo se desarrolla un método de análisis por inyección de flujo (FIA) para la determinación de ranitidina en formas farmacéuticas y orina, empleando una celda de flujo polarográfica como sistema de detección, ...
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(Sociedad Chilena de Tecnología de Alimentos, 1990)A través de la historia, los gobiernos han realizado una función importante en la protección de los alimentos, controlando las adulteraciones, contaminaciones, alteraciones y rotulaciones inadecuadas. desde tiempos remotos ...
