1,720,962 research outputs found
Análisis Fisicoquímico De Leches, Refresco Tampico Y Refrescos Pulpy En La Cooperativa Colanta Ltda. – Armenia.
No full textLa industria lechera a nivel nacional se consideraba hace mucho como una actividad que solo le pertenecía al productor pero en la actualidad dicha actividad ha tomado gran acogida por parte de las grandes multinacionales en lo que a alimentos se refiere.
Llevándose a cabo diversos procesos en las plantas de leche buscando mantener los componentes nutricionales de la misma, para que de esta forma se pueda sacar al mercado un producto en óptimas condiciones de higiene y salubridad de acuerdo a la normatividad vigente que rige el manejo, manipulación, transformación, procesamiento, envasado y transporte de productos alimenticios en este caso la leche.PregradoQuímic
Estudio de la Vida Útil de Jugos Enriquecidos de Mora (Rubus glaucus), Guanábana (Annona muricata L.) y Maracuyá (Passiflora edulis)
No full textLa mora, guanábana y maracuyá aportan gran contenido de compuestos nutricionales y sabores apetecidos por los consumidores. En este trabajo se evaluó la vida útil de jugos enriquecidos con compuestos activos (calcio y vitamina C). Las materias primas fueron seleccionadas, desinfectadas (hipoclorito 50 ppm), despulpadas y homogenizadas. Para obtener la viscosidad adecuada, se adicionaron gomas y enzimas, estos tratamientos se llevaron a cabo en una incubadora con rotor; para asegurar la inocuidad de los jugos enriquecidos se empleó una pasteurización corta, posteriormente se utilizó sucralosa como endulzante. El estudio de vida útil se desarrolló a diferentes temperaturas (15, 25, 35 °C) haciendo un seguimiento de parámetros como: color, acidez, °Bx y viscosidad. El modelamiento matemático para la determinación del tiempo de vida útil se realizó tomando como base la integración de las ecuaciones cinéticas y de Arrhenius propuestas. Los jugos enriquecidos conservan sus atributos y aportan gran contenido nutricional. Las enzimas usadas en frutas tienen grandes beneficios ya que ayudan a la clarificación de la pulpa y a aumentar el rendimiento de producción de jugos y néctares, obteniendo productos con mejores características sensoriales para el consumidor.1. Resumen2. Introducción3. Planteamiento del problema4. Justificación5. Objetivos6. Antecedentes7. Marco conceptual8. Análisis fisicoquímicos en alimentos9. Compuestos fisiológicamente activos (Calcio -Vitamina C)10. Estabilizantes11. Metodología12. Caracterización de las materias primas13. Medición de la actividad de la enzima14. Incoporación de los compuestos fisiológicamente activos (CFA)15. Análisis microbiológico16. Análisis sensorial17. Resultados y discusión18. Evaluación microbiológica19. Estudio vida útil20. Conclusiones21. Recomendaciones22. BibliografíaAnexosPregradoIngeniero de Alimento
PRODUCCIÓN DE PULPA DE MANGO FUNCIONAL
No full textLos alimentos funcionales representan la gama de alimentos de mayor interés por los consumidores modernos, proporcionando un beneficio para la salud, superior a los nutrientes tradicionales. El objetivo de la investigación fue desarrollar una pulpa de mago adicionada con calcio oligofructosa y vitamina C. Se evaluaron 3 formulaciones en términos de sus propiedades fisicoquímicas, físicas, microbiológicas y sensoriales, comparándose con una pulpa control sin adición de componentes activos. La pulpa fresca inicialmente fue tratada enzimáticamente con pectinasa al 0,075%, 75 minutos y 35 ºC, y posteriormente pasteurizados. Se alcanzaron niveles promedios de calcio y vitamina C de 162,5 y 32.5 mg respectivamente en una porción de 250 mL, correspondiente en el marco de la normativa colombiana a un 16.3 y 54.2 % valor diario de referencia (VDR). Las pulpas fortificadas con componentes activos fueron más estables que el control y la formulación con la relación molar calcio: olifructosa de 1:1 fue la de mayor aceptación sensorial. </jats:p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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