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Increases in petroleum prices have affected the prices of its derived products. In addition, the interest in issues related to the environment and energy security at world-wide level has been increased. All of these factors have contributed to the development of alternative fuel such as the ethanol, biodiesel and natural gas. This study analyzes the main agricultural products used to produce biodiesel, their production costs and the utilization of those inputs in other industries. This study will also include a brief summary of different legislations in those countries under analysis. On the other hand, we will find break-even points and apply a sensibility analysis associated with distinct scenarios in terms of input-output prices.

Resumen La mayor parte de los emprendimientos est��n constituidos por peque��as empresas y microempresas que tienen una elevada representaci��n en la provincia Los R��os, Ecuador, de las que dependen numerosas familias para llevar su sustento a casa, adem��s de contribuir a los servicios y el avituallamiento en cada cant��n. Este art��culo tiene como objetivo obtener una percepci��n de las caracter��sticas de estas empresas, determinando sus fortalezas y debilidades y de esta manera hacer propuestas que eliminen o mitiguen los obst��culos y elevar la eficiencia en cada caso. Entre los resultados que se destacaron est�� que existe consenso de la importancia de los emprendimientos por la empleabilidad y los servicios que recibe la poblaci��n. Abstract Most of the entrepreneurship are made up of small businesses and microenterprises that have a high representation in Los R��os province, Ecuador, on which many families depend to take their livelihoods home, in addition to contributing to services and supplies in each canton. This article aims to obtain a perception of the characteristics of these companies, determining their strengths and weaknesses and thus make proposals that eliminate or mitigate obstacles and increase efficiency in each case. Among the results that stood out is that there is consensus on the importance of entrepreneurship for the employability and services that the population receives. Los autores declaran no tener conflicto de intereses.