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The European Researchers’ Night 2019 (NEI 2019) took place on 27th September, from 6 p.m. to midnight, at the National Museum of Natural History and Science (MUHNAC-ULisboa) and Jardim do Príncipe Real, with various activities.


This year's edition was dedicated to “SciCity – Science in the City”. The topic aims to respond to the main concerns of urban communities related to the global changes planned for the coming decades, highlighting the relevance of science to ensure the quality of life in cities of the future and the preservation of cultural heritage as an essential factor for sustainability.


LAQV researchers were present in this year's edition with the following activity:


Separation of biological compounds by chromatography

The gel filtration method is a method for the separation of substances according to molecular size and shape for based on the molecular sieve effect. This sieve consist in a three-dimensional porous networks based on linear chains of polymers that intersect and form the gel matrix. The most commonly used gels are those obtained by polymerization of polysaccharide chains (Sephadex) or those consisting of the polymerisationof polysaccharide chains (Sephadex) polyacrylamide (Biogel). When these molecular sieves are placed in water, they swell and form the gel. The particles that form the gel have pores and the size of the pores is a function of the grade of intersecting polymer chains. The possibility of varying the pore size makes this method useful for the separation of different substances.


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