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- Resumen es exacto "In recent years, concepts such as bioeconomy, bioproducts, biofuels, bioenergy and even biorefineries have been increasingly used. This is due to a growing environmental awareness coupled with the possibilities that countries like Argentina have to add value to the abundant biological resources available in their territories, thus promoting the sustainable production of goods and services. To achieve the previous, not only public policies but also the private productive and technological sectors, all included within the science and technology system, are important. In this context, this Thesis work focused on developing or implementing sustainable chemical and biotechnological routes to obtain innovative products with high added value, using various renewable resources in Argentina. These abundant resources were used as raw materials, in some cases as cheap nutrients for the formulation of culture media and, in other cases, as relatively low-cost biopolymers. Related to the latter, three biobased polymers were chosen to work with, such as, starch from agricultural biomass (corn industry), lignin from forest biomass and cellulose of microbial origin (bacterial nanocellulose or BNC), each one with the aim of obtaining downstream products with specific applications such as, for example, resistant starches (RS) or biodegradable films for food packaging.
Citric acid (CA) and cellulase enzymes were used for the development of environmentally friendly processes that would allow modifying and adding value to the three aforementioned biopolymers. Likewise, both the organic acid and the BNC were produced in culture media formulated with low-cost nutrients and compatible with a potential local production on an industrial scale. Finally, adding value to some of the residual microbial biomass of this processes was also tested, exploring its potential to obtain biodegradable films."
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