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<field name="value">Universidad de Burgos. Departamento de Biotecnología y Ciencia de los Alimentos</field>
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<field name="value">En esta Tesis Doctoral se analiza la separación de biocompuestos de interés alimentario y farmaceutico como son los aminoácidos (α-fenilglicina y ácido aspártico) y derivados (betaína) mediante una novedosa tecnología híbrida de extracción con resinas impregnadas de extractante (RIE), demostrando que es una alternativa adecuada a los procesos de separación convencionales. En este estudio se ha empleado como soporte polimérico Amberlita XAD-4 y como extractante cloruro de tri-alquilmetilamonio (Tomac) para la separación selectiva de los aminoácidos y ácido dinonilnaftalensulfónico (DNNSA) para la de betaína.&#xd;
&#xd;
Este estudio se basa en los principios que gobiernan la transferencia de materia, relacionados con el equilibrio entre fases, el estudio de las etapas físicas que condicionan la operación, la velocidad de transferencia de materia y su modelización de cara al diseño del proceso integrado de extracción – reextracción en lechos fijos y su posible cambio de escala para la aplicación industrial. __________________ Separation of amino acids (α-phenylglycine and aspartic acid) and by-products (betaine), as they are biocompounds of food and pharmaceutical interest, was carried out with a new extraction technology using extractant-impregnated resins. This study demonstrates that this new technology is an alternative to the conventional separation processes.&#xd;
&#xd;
Extraction with impregnated resins (EIR) is a novel hybrid technology which combines the high capacity and selectivity of liquid-liquid extraction technique, with the advantages of separation processes with ion exchange resins, which allow to process high quantities of diluted solutions, using simple and low cost equipments, such as fixed or fluidized beds. In this work separation of amino acids was investigated by impregnation of Amberlite XAD-4 resin with tri-alkylmethylammonium chloride (TOMAC) and for betaine separation the same resin was impregnated with dinonilnaftalensulfonic acid (DNNSA).</field>
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<field name="value">Aminoácidos</field>
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<field name="value">Separación de aminoácidos y derivados utilizando resinas impregnadas de extractante</field>
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<field name="value">© Universidad de Burgos, 2010</field>
<field name="value">© Ana Isabel Horta Ronda, 2010</field>
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