Abstract
The paper presents some elements associated to the approaches to bioeconomy. The purpose is to debate the conflicts in the territory when it is conceived as a space of social historical construct governed by human laws and institutions that make it possible to mitigate the different levels of power exerted on their soil, and as a natural means self-regulated by the law of thermodynamics. As a methodological approach, a case study in the city of Medellín is taken, namely <em>Mujeres populares en la gestión alimentaria en la ciudad urbano-rural de Medellín (Popular women in food management in the urban-rural city of Medellin)</em>. This is the result of an interest in understanding how energy flows and how material cycles are established in ecosystems, as well as their use value and exchange value in the relationships and interests of both the market and in the process and the strategies of communities in order to ensure food security.