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Avances en la selección de cepas microbianas y la valorización de fuentes de carbono para la producción de
William Mawuko Siegu1, Piotr Drożdżyński2, Vignesh Kumaravel3
1International Centre for Research on Innovative Biobased Materials (ICRI-BioM) -International Research Agenda, Lodz University of Technology, Lodz, 90-537 Poland; Institute of Molecular and Industrial Biotechnology, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, 90-537 Poland.
New biotechnology
|February 6, 2026
Resumen
Los polihidroxialcanoatos (PHA) ofrecen una alternativa sostenible a los plásticos. La optimización de la producción microbiana utilizando corrientes de residuos y cepas bacterianas específicas como Cupriavidus, Pseudomonas y E. coli puede reducir los costos y el impacto ambiental.
Área de la Ciencia:
- Biotecnología
- Ciencia de Polímeros
- Ciencias Ambientales
Sus antecedentes:
- Los polihidroxialcanoatos (PHA) son polímeros biodegradables con potencial para reemplazar los plásticos derivados del petróleo.
- La comercialización a gran escala de PHA está limitada por los altos costos de producción.
- La investigación se centra en mejorar el rendimiento de PHA y utilizar fuentes de carbono de bajo costo y no alimentarias.
Objetivo del estudio:
- Revisar la optimización de la biosíntesis de PHA a través de la selección de cepas microbianas y sustratos.
- Analizar la flexibilidad metabólica, el rango de sustratos y el contenido de PHA de géneros bacterianos clave.
- Evaluar la viabilidad económica y el impacto ambiental de la producción de PHA.
Principales métodos:
- Revisión de la literatura científica sobre la biosíntesis de PHA.
- Análisis de las vías metabólicas y la utilización de sustratos en Cupriavidus, Pseudomonas y Escherichia coli.
- Evaluación del contenido de PHA (g de producto/g de sustrato) para diferentes cepas y sustratos.
- Evaluación del impacto ambiental, incluyendo la huella de carbono y el Análisis del Ciclo de Vida (ACV).
Principales resultados:
- Escherichia coli y Cupriavidus necator muestran un alto contenido de PHA a partir de azúcares simples y ácidos grasos, respectivamente.
- Las especies de Pseudomonas exhiben una amplia adaptabilidad de sustratos, incluyendo corrientes de residuos.
- La producción de PHA a partir de lípidos residuales por Cupriavidus necator y cepas de Pseudomonas puede tener una menor huella de carbono que el PHA a base de glucosa o PET.
Conclusiones:
- La ingeniería microbiana de residuos agroindustriales y orgánicos es crucial para la producción sostenible de PHA.
- Se necesitan enfoques de bioprocesamiento de ACV específicos de género para la fabricación de PHA económica y ambientalmente racional.
- La investigación adicional requiere valores reproducibles y cuantificables del Potencial de Calentamiento Global (GWP) para una evaluación precisa del impacto ambiental.
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