Thesis INMOVILIZACIÓN DE LACASA EN RESIDUOS AGROFORESTALES Y SU POSTERIOR USO EN BIODEGRADACIÓN DE OXITETRACICLINA BIODEGRADATION OF OXYTETRACYCLINE BY LACCASE IMMOBILIZED ON BIOMASS RESIDUES
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Date
2018-08
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UNIVERSIDAD TÉCNICA FEDERICO SANTA MARÍA UTFSM. DEPARTAMENTO DE INGENIERÍA QUÍMICA Y AMBIENTAL. MAGÍSTER EN CIENCIAS DE LA INGENIERÍA QUÍMICA
Campus
Campus San Joaquín, Santiago
Abstract
Chile es el segundo mayor productor a nivel mundial de salmónidos, para lo cual emplea una gran cantidad de antibióticos, siendo estos entre 1,000 y 2,500 veces la cantidad empleada por noruega, el primer productor mundial de salmón. Siendo el segundo antibiótico de mayor uso en la industria de la salmonicultura chilena la oxitetraciclina (OTC). El uso intensivo de estos fármacos genera problemas medioambientales debido a la resistencia bacteriana que generan tanto en humanos como en animales. La lacasa ha sido ampliamente estudiada para diversas aplicaciones industriales y biotecnológicas, ya que puede degradar compuestos fenólicos y no fenólicos. Especialmente la enzima proveniente de Trametes versicolor debido a su alto potencial redox y puede producir altas actividades enzimáticas. Dentro de los usos reportados está el tratamiento de aguas contaminadas con antibióticos. Sin embargo, al igual que otras enzimas el costo asociado a su producción y purificación suele ser elevado. Por lo tanto, se propone la biodegradación de OTC mediante lacasa sin purificar de T. versicolor sustentable usando residuos de biomasa como fuente de nutrientes y como soporte de inmovilización para su reutilización.
Chile is the second largest producer of salmon, which uses in their productive process a large amount of antibiotics, between 1,000 and 2,500 times the amount employed by Norway, the first producer of salmon in the world. The second antibiotic most used in the Chilean aquiculture industry is oxytetracycline (OTC). The intensive use of these drugs generates environmental issues due to bacterial resistance in humans and animals. Laccase has been widely studied for various industrial and biotechnological appl ications because it can degrade a wide variety of phenolic and non-phenolic compounds. Specially the enzyme from Trametes versicolor due to their high redox potential and the production of elevated enzymatic activities. Among the reported applications, it is the treatment of water contaminated with antibiotics. However, like other enzymes, the cost associated in their production and purification is usually high. Therefore, it was purposed the OTC biodegradation by sustainable unpurified laccase from T. versicolor using biomass residues as a source of nutrients and as an immobilization carrier for its reusing.
Chile is the second largest producer of salmon, which uses in their productive process a large amount of antibiotics, between 1,000 and 2,500 times the amount employed by Norway, the first producer of salmon in the world. The second antibiotic most used in the Chilean aquiculture industry is oxytetracycline (OTC). The intensive use of these drugs generates environmental issues due to bacterial resistance in humans and animals. Laccase has been widely studied for various industrial and biotechnological appl ications because it can degrade a wide variety of phenolic and non-phenolic compounds. Specially the enzyme from Trametes versicolor due to their high redox potential and the production of elevated enzymatic activities. Among the reported applications, it is the treatment of water contaminated with antibiotics. However, like other enzymes, the cost associated in their production and purification is usually high. Therefore, it was purposed the OTC biodegradation by sustainable unpurified laccase from T. versicolor using biomass residues as a source of nutrients and as an immobilization carrier for its reusing.
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DESECHOS AGRICOLAS, DESECHOS INDUSTRIALES, BIODEGRADACION