Aislamiento y purificación de la enzima lacasa: evaluación de su potencial biodegradador en residuos agrícolas
Fecha
2020
Autores
Valdés, Sandra
Garita, Cristian
Esquivel, Carmenza
Villegas Peñaranda, Luis Roberto
Título de la revista
ISSN de la revista
Título del volumen
Editor
Sociedad Mexicana de Biotecnología y Bioingeniería (México)
Resumen
Resumen. A nivel mundial, el inadecuado manejo de los residuos está generando el deterioro acelerado del planeta y, Costa Rica no es la excepción. Con el objetivo de aislar y purificar la enzima lacasa para la evaluación de su potencial degradador de residuos agrícolas, se obtuvieron cultivos axénicos de Ganoderma applanatum y Trichoderma harzianum, en los cuales se determinó la actividad de la enzima lacasa mediante la oxidación del ABTS. El aislamiento de G. applanatum registró la mayor concentración de la enzima, por lo que fue parcialmente purificada mediante electroforesis en gel de poliacrilamida (SDS-PAGE), luego el extracto enzimático fue purificado con filtro Vivaspin de 20 ml y peso molecular 50 kDa. Posteriormente, se llevaron a cabo los tratamientos enzimáticos de los residuos agroindustriales de caña, piña y banano durante 45 días. Los resultados mostraron que la enzima redujo la concentración de lignina en los residuos de banano y caña en lapsos que oscilaron entre 15 y 45 días.
Abstract. Around the world, the inappropriate waste management is generating a quick deterioration of the planet, and Costa Rica is not the exception. To isolate and purify lacassa enzymes to evaluate its biogradient potential of agricultural wastes, axenic isolates of Ganoderma applanatum and Trichoderma harzianum were used to estimate its laccase enzymatic activity by ABTS oxidation. G. applanatum recorded the highest amount of the enzyme, so it was partially purified by SDS-PAGE electrophoresis gel, by the way the enzymatic extract was purified with a 20 ml Vivaspin filter of 50 kDa molecular weight. After that, banana, sugar cane and pineapple wastes were submitted to enzymatic treatments for 45 days. The assessment showed a reduction in the amount of lignin on banana and sugar cane residues at 15 and 45 days.
Abstract. Around the world, the inappropriate waste management is generating a quick deterioration of the planet, and Costa Rica is not the exception. To isolate and purify lacassa enzymes to evaluate its biogradient potential of agricultural wastes, axenic isolates of Ganoderma applanatum and Trichoderma harzianum were used to estimate its laccase enzymatic activity by ABTS oxidation. G. applanatum recorded the highest amount of the enzyme, so it was partially purified by SDS-PAGE electrophoresis gel, by the way the enzymatic extract was purified with a 20 ml Vivaspin filter of 50 kDa molecular weight. After that, banana, sugar cane and pineapple wastes were submitted to enzymatic treatments for 45 days. The assessment showed a reduction in the amount of lignin on banana and sugar cane residues at 15 and 45 days.
Descripción
Palabras clave
GANODERMA APPLANATUM, TRICHODERMA HARZIANUM, RESIDUOS AGROINDUSTRIALES, LACCASE, G. APPLANATUM, T. HARZIANUM, AGROINDUSTRIAL WASTES, ENZIMAS