Elaboración y caracterización de una biopelícula a partir de almidón de plátano verde (musa paradisiaca) incorporando aceite esencial de orégano (Origanum sp.) como inhibidor microbiano en la preservación de fresas empacadas

En la presente investigación se elaboró y caracterizó una biopelícula a partir de almidón de plátano verde incorporando aceite esencial de orégano como inhibidor microbiano con la finalidad de preservar fresas empacadas a una temperatura de 3° c. Se realizaron los procesos de extracción y caracterización de materia prima, se establecieron diferentes formulaciones de los componentes de las biopelículas, seguidamente se elaboraron y caracterizaron las biopelículas y recubrimientos en fresas, arrojando que las fresas recubiertas con la formulación F3 presentaron mejores características de calidad, además se determinó la vida de anaquel la cual fue de 7 días para fresas recubiertas con la formulación Fi y 18 días para fresas recubiertas con las formulaciones F2, F3 y F4, por último se realizó un análisis sensorial para las fresas recubiertas con la formulación F3 la cual fue menos preferida debido al atributo “sabor” comparados con la formulación F

Possible combined effects of climate change, deforestation, and harvesting on the epiphyte Catopsis compacta: a multidisciplinary approach

Climate change, habitat loss, and harvesting are potential drivers of species extinction. These factors are unlikely to act on isolation, but their combined effects are poorly understood. We explored these effects in Catopsis compacta, an epiphytic bromeliad commercially harvested in Oaxaca, Mexico. We analyzed local climate change projections, the dynamics of the vegetation patches, the distribution of Catopsis in the patches, together with population genetics and demographic information. A drying and warming climate trend projected by most climate change models may contribute to explain the poor forest regeneration. Catopsis shows a positive mean stochastic population growth. A PVA reveals that quasi-extinction probabilities are not significantly affected by the current levels of harvesting or by a high drop in the frequency of wet years (2%) but increase sharply when harvesting intensity duplicates

Emotional processing in Colombian ex-combatants and its relationship with empathy and executive functions

In this work, the neural correlates of emotional processing in Colombian ex-combatants with different empathy profiles were compared to normal controls matched for age, gender and educational level. Forty ex-combatants and 20 non ex-combatants were recruited for this study. Empathy levels as well as executive functions were measured. Empathy level was used to create three groups. Group 1 (G1) included ex-combatants with normal empathy scores, and Group 2 included ex-combatants with low scores on at least one empathy sub-scales. In control group (Ctrl), participants with no antecedents of being combatants and with normal scores in empathy were included. Age, gender, educational and intelligence quotients level were controlled among groups. event-related potentials (ERPs) were recorded while individuals performed an affective picture processing task that included positive, neutral and negative emotional stimuli, which elicit an early modulation of emotion categorization (Early Posterior Negativity (EPN)) and late evaluative process (LPP). EPN differences were found among affective categories, but no group effects were observed at this component. LPP showed a main effect of category and group (higher amplitudes in ex-combatants). There was an inverse correlation between empathy and executive functions scores and ERPs. Results are discussed according to the impact of emotional processing on empathy profile.Fil: Tobón, Carlos. Universidad de Antioquia; ColombiaFil: Ibáñez Barassi, Agustín Mariano. Universidad Favaloro; Argentina. Universidad Autónoma del Caribe; Colombia. Australian Research Council; Australia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Diego Portales; ChileFil: Velilla, Lina. Universidad de Antioquia; ColombiaFil: Duque, Jon. Universidad de Antioquia; ColombiaFil: Ochoa, John. Universidad de Antioquia; ColombiaFil: Trujillo, Natalia. Universidad de Antioquia; ColombiaFil: Decety, Jean. University of Chicago; Estados UnidosFil: Pineda Argueta, David. Universidad de Antioquia; Colombi