5 research outputs found
Caracterización y modelado del crecimiento microbiano en el desarrollo de una bebida probiótica no láctea de extracto vegetal de tarwi (Lupinus mutabilis S.)
No full textThe present study, had the purpose of developing a fermented non-dairy probiotic drink based on tarwi, for this purpose the legume was unmarked, and then obtained Tarwi Vegetable Extract (EVQ) by blending it, then proceeded to make mixtures with sucrose (6 and 12%) and inoculum of Saccharomyces boulardii (2 and 4%) thus obtaining a total of 4 treatments (A1 - A4), the inoculation was performed at 37 ° C with constant agitation at 20 RPM for a period of 24 hours; where at three-hour intervals readings of the biomass increase were made with a microscope and a neubauer chamber expressed in (cfu / ml) at intervals of 3 hours, curves and kinetic parameters of microbial growth were constructed with the mathematical model of Gompertz, a monitoring of ° Brix, density, pH, and% of acidity was carried out, a linear regression analysis was applied; finally the adjustment of the mathematical modeling was carried out. The results of the microbial growth kinetics showed the stages of microbial growth in all treatments, however, A1 showed the best fit in the kinetic parameters (C = 0.652, B = 1.296, M = 0.408). On the other hand, negative slopes with respect to ° Brix, density, pH, and a positive slope in acidity were observed in the linear regression of the physicochemical properties. The behavior of the kinetics of microbial growth and the physicochemical changes presented good parameters and characteristics of a probiotic drink.El presente trabajo tiene como objetivo caracterizar y modelar el crecimiento microbiano de una bebida probiótica fermentada no láctea a base de extracto vegetal de tarwi. Se empleó la metodología de molienda húmeda para obtener el Extracto Vegetal de Tarwi (EVQ), luego se procedió a formular las mezclas con sacarosa (6 y 12 %) e inóculo de Saccharomyces boulardii (2 y 4 %) y se obtuvo así cuatro tratamientos (A1 – A4) con réplicas; la inoculación fue realizada a 37 °C con agitación constante a 20 RPM durante 24 horas. Se realizaron las lecturas del incremento de biomasa con un microscopio y una cámara de neubauer, expresado en (ufc/ml) en intervalos de 3 horas; se construyó curvas y parámetros cinéticos de crecimiento microbiano con el modelo matemático de Gompertz; se realizó un monitoreo de °Brix, densidad, pH, y % de acidez; se aplicó un análisis de regresión lineal; finalmente se realizó el ajuste del modelado matemático. Los resultados de la cinética de crecimiento microbiano mostraron las fases de crecimiento microbiano en todos tratamientos, sin embargo, A1 mostró el mejor ajuste en los parámetros cinéticos (C = 0.652, B = 1.296, M = 0.408). Por otro lado, se observó en la regresión lineal de las propiedades fisicoquímicas pendientes negativas con respecto a los °Brix, densidad, pH, y una pendiente positiva en la acidez. El comportamiento de la cinética de crecimiento microbiano y los cambios fisicoquímicos presentaron buenos parámetros y características propia de una bebida probiótica
Author Correction: The power of genetic diversity in genome-wide association studies of lipids
No full textCorrection to "The power of genetic diversity in genome-wide association studies of lipids
The power of genetic diversity in genome-wide association studies of lipids (Author Correction: vol 600, pg 675, 2021)
No full textReflections on the Future Present. Images of the United States in the Early Twentieth-Century Spanish Press (1898-1914)
No full text[EN] This article focuses on Spanish perceptions of the United States between 1898 and 1914
with an exhaustive perusal of some of the major publications of that period. Establishing a
range of common themes –culture, scientific and technological development, politics and society–
the author demonstrates that the Spanish vision was not very different from that of
other countries, because it was influenced by the views and opinions expressed in Europe.
Furthermore, the establishment of an extensive network of contacts with the editorial offices
of newspapers and periodicals served as a channel for the circulation of a set of common
ideas and representations of American power[ES] Este artículo se centra en las percepciones españolas sobre los Estados Unidos entre 1898
y 1914 a través del vaciado de algunas de las principales publicaciones de ese momento.
Estableciendo una serie de ejes coincidentes –cultura, desarrollo científico-tecnológico, polí-
tica y sociedad–, el autor demuestra que la visión española no fue tan diferente a la de otros
países, pues se vio condicionada por las valoraciones que se estaban realizando en Europa.
Asimismo, el establecimiento de una extensa red de contactos en las redacciones de periódicos
y revistas sirvió como canal de circulación de un conjunto de ideas y representaciones
comunes sobre la potencia americana.Peer reviewe
Directorio de consultores, recursos y sitios de Internet relacionados con bibliotecas mexicanas = Directory of consultants, resources & Internet sites relating to Mexican libraries
No full textThis guidebook was compiled for: 1) foreign librarians, 2) Mexican students enrolled in programs of study in the field of librarianship or in certificate programs in library science, 3) volunteers or those in practicum service, 4) paraprofessionals or the recently degreed Mexican librarian, 5) non-experts. This work, a bilingual annotated directory, contains basic information on a wide range of resources relevant to librarianship as presently practiced in Mexico: books, articles, useful web pages, events, possible contacts in institutions. To find specific phrases or words use your navigator’s BUSCAR/FIND search tool, or scroll down. There is no intention to publish the list at this time. The information is being provided as a free service. This directory database is not exhaustive; the user is encouraged to verify all data from the source. Please provide us with your opinion concerning this Directory. All additions, suggestions, or modifications will be welcome. To contact the compiler, email: William Abrams Indexing Services, [email protected] . Your comments will help us to improve future editions. Terms of Use: This Directory is not copyrighted. It is a document in the public domain. No rights are reserved, either for the original or for derivative works. The file may be freely copied without prior permission, preferably using a CD-ROM data disc (but if access is from the website, one should first verify that the download has completed before copying). (Abstract taken verbatim from author's)
