Actividad antioxidante y antibacteriana de extractos obtenidos del micelio de Pleurotus ostreatus cultivado con residuos agroindustriales

Antecedentes y Objetivos: Pleurotus ostreatus (PO) es un hongo comestible cuyo consumo se ha incrementado debido a su importante contenido de nutrientes. Es un hongo saprofito que puede adquirir nutrientes dependiendo del sustrato en el que se cultiva, y es bien conocido que los residuos agroindustriales son una fuente importante de nutrientes. Este trabajo tiene como objetivo evaluar el efecto de los residuos de grano de café usado (SCG) y cáscara de papa (PPR) como sustrato sobre el contenido de polifenoles y la actividad antioxidante y antimicrobiana del extracto hidroalcohólico de micelio de PO. Métodos: El cultivo de PO se realizó con cuatro sustratos que incluían paja de trigo sustituida con 10, 15 y 20% de una mezcla de 1:1 de residuos (SCG y PPR). A partir del micelio obtenido se generaron extractos hidroalcohólicos en los que se determinó el contenido fenólico, actividad antioxidante (actividad antirradical y poder reductor) y antibacteriana frente a patógenos transmitidos por alimentos (Staphylococcus aureus, Listeria monocytogenes, Escherichia coli y Salmonella typhimurium). Resultados clave: Los resultados muestran que la mayor actividad antirradical contra DPPH y la cuantificación de fenoles se presentó en el sustrato con 10, 15 y 20% de SCG y PPR; el sustrato que contenía 20% tuvo un mayor contenido de flavonoides y actividad antirradical ABTS. Sin embargo, no hubo diferencias en el contenido de ácido clorogénico entre los sustratos. Todos los tratamientos también exhibieron actividad antibacteriana contra los patógenos evaluados, principalmente contra S. aureus. Conclusiones: SCG y PPR incrementaron el contenido de polifenoles y la actividad antioxidante y antibacteriana en el extracto hidroalcohólico del micelio de PO, convirtiéndolos en sustratos efectivos para el cultivo.

• Publication year

  2025

• Venue

  Acta Botánica Mexicana

• Publication date

  2025-04-07

• Fields of study

  Not labeled

• Identifiers
  DOI 10.21829/abm132.2025.2384
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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