Chemical Composition, Antioxidant, Antimicrobial and Antidiabetic Potential of Philodendron Bipinnatifidum Schott ex Endl

Many of the species used in popular medicine do not have their biological activities already proven by scientific studies. Among these species, the endemic South American Philodendron bipinnatifidum Schott ex Endl deserves special attention since it is already in use in popular medicine for inflammation cases, such as erysipelas, orchitis and ulcers. This study evaluated the antioxidant, antimicrobial and antidiabetic activities of extracts of the hastes de P. bipinnatifidum. The ethanolic extract showed a significant antioxidant potential. The ethyl acetate extract resulted in high antimicrobial activity against Streptococcus pyogenes. The most significant biological activity of ethyl acetate extract relates to its chemical composition when compared with ethanolic extract, which showed the highest concentration of bioactive compounds. In vitro antidiabetic activity was only evaluated for ethyl acetate extract, resulting in inhibition of intestinal disaccharidases (maltase and sucrase) at concentration of 500 μg/mL

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

Danza Telemática: Embodied in varios Darmstad 58´Parte 2

Danza Telemática a través de la RedCUDI la Red Nacional de Investigación y Educación en México en colaboración con la Red Nacional de Pesquisa en Brasil y la RedIRIS en España, se unen para producir un espectáculo que rompe las barreras de la distancia y contribuye al desarrollo de un lenguaje artístico innovador con gran potencial de enlaces entre gobierno, empresas y universidades en el ámbito académico, artístico y difusión del Arte en las Redes de Latinoamérica (RedCLARA),  Europa (GEANT) y México (CUDI).México forma parte de esta red de creadores, investigadores y desarrolladores que utilizan el lenguaje telemático. Danza Telemática es un proyecto tripartita13_11_29_danzatelematicaparte2.fl

Danza Telemática: Embodied in varios Darmstad 58´ Parte 3

Danza Telemática a través de la RedCUDI la Red Nacional de Investigación y Educación en México en colaboración con la Red Nacional de Pesquisa en Brasil y la RedIRIS en España, se unen para producir un espectáculo que rompe las barreras de la distancia y contribuye al desarrollo de un lenguaje artístico innovador con gran potencial de enlaces entre gobierno, empresas y universidades en el ámbito académico, artístico y difusión del Arte en las Redes de Latinoamérica (RedCLARA),  Europa (GEANT) y México (CUDI).México forma parte de esta red de creadores, investigadores y desarrolladores que utilizan el lenguaje telemático. Danza Telemática es un proyecto tripartita.13_11_29_danzatelematicaparte3.fl