Investigaciones en plantas con potencial bioactivo

The Biotechnology Research Center (CIB) at Costa Rica Institute of Technology (TEC) consists of a multidisciplinary group of researchers performing their research in three different lines of action in Biotechnology: Plants, Environmental and Biomedical Research. The research projects in Plant Biotechnology include investigations on plants with bioactive potential, natural products, secondary metabolites, antioxidant compounds, ethnobotany, bioprocesses, pharmacognosy and tissue culture. Researchers from different fields (biologists, agronomists and biotechnologists) collaborate in search of the same objective: “The use of biological resources as a source of secondary metabolites with a positive effect on health, which can be used as an adjuvant or for developing natural phytopharmaceuticals for humans”. This article presents a brief summary of the projects and achievements that have been obtained in this area of research at CIB.El Centro de Investigación en Biotecnología (CIB) del Instituto Tecnológico de Costa Rica (TEC), cuenta con un grupo multidisciplinario de profesionales que orientan sus investigaciones en tres diferentes líneas de acción: Biotecnología Vegetal, Ambiental y Biomédica. En el área de Biotecnología Vegetal se desarrollan proyectos que incluyen investigaciones en productos naturales, metabolitos secundarios, compuestos antioxidantes, etnobotánica, bioprocesos, farmacognosia y cultivo de tejidos; todos bajo un mismo objetivo “el uso de recurso biótico como fuente de compuestos bioactivos con efecto positivo sobre la salud, que puedan ser utilizados como coadyuvante o fitofármaco natural para el hombre”. En este artículo se presenta un breve resumen de los proyectos y logros que se han obtenido en esta área de investigación en el CIB

Spatial and temporal variability of periglaciation of the Iberian Peninsula

Active periglacial processes are currently marginal in the Iberian Peninsula, spatially limited to the highest mountain ranges. However, a wide variety of periglacial deposits and landforms are distributed in low and mid-altitude environments, which shows evidence of past periods of enhanced periglacial activity. The purpose of this paper is to summarize the present knowledge of past periglacial activity in the Iberian Peninsula. The chronological framework takes four main stages into account: the last glaciation, deglaciation, Holocene and present-day processes. This study focuses on the highest massifs (Pyrenees, Cantabrian Range, NW ranges, Central Range, Iberian Range, Sierra Nevada) as well as other lower elevation environments, namely the central Iberian Meseta. During the last glaciation the periglacial belt extended to much lower altitudes than today, reaching current sea level in the NW corner of the Iberian Peninsula. A wide range of geomorphological landforms and sedimentary records is indicative of very active periglacial processes during that phase, in some cases related to permafrost conditions (i.e., block streams, rock glaciers). Most of the inactive landforms and deposits in low and mid-elevations in Iberia are also related to this phase. The massive deglaciation of the Iberian massifs was caused by a gradual increase in temperatures. The deglaciation phase was only interrupted by a short period with colder conditions (the Younger Dryas) that reactivated periglacial processes in the formerly glaciated cirques of the highest lands, specifically with the widespread development of rock glaciers. During the Holocene, periglacial processes have been only active in the highest ranges, shifting in altitude according to temperature regimes and moisture conditions. The Little Ice Age saw the reactivation of periglacial activity in lower elevations than today. Currently, periglacial processes are only active in elevations exceeding 2500 m in the southern ranges and above 2000e2200 m in the northern massifs, higher in Sierra Nevada, in the south of Iberian Peninsula.info:eu-repo/semantics/publishedVersio