Resumen
To reach a more sustainable society, the implementation of a circular economy perspective in municipal waste
management becomes essential. In this work, the enzymatic hydrolysis of source-separated organic fraction of
municipal solid waste (OFMSW) has been optimized as a sugar-releasing step. A liquid sugar concentrate, with a
maximum reducing sugar concentration of 50.56 g L-1, and a solid hydrolyzed fraction were obtained. The effect
of the harshness of the hydrolysis conditions was evaluated on the performance of the resulting solid fraction as a
substrate for Bacillus thuringiensis biopesticide production through solid-state fermentation. A production of 3.9
× 108 viable cells g-1 dry matter with a 33% sporulation ratio was achieved for milder hydrolysis conditions,
highlighting the potential of the solid fraction of hydrolysis as a substrate of SSF processes. The proposed
valorization pathway for the OFMSW results in a sugar concentrate with potential for fermentative processes and
a fermented solid containing biopesticides from Bacillus thuringiensis.
management becomes essential. In this work, the enzymatic hydrolysis of source-separated organic fraction of
municipal solid waste (OFMSW) has been optimized as a sugar-releasing step. A liquid sugar concentrate, with a
maximum reducing sugar concentration of 50.56 g L-1, and a solid hydrolyzed fraction were obtained. The effect
of the harshness of the hydrolysis conditions was evaluated on the performance of the resulting solid fraction as a
substrate for Bacillus thuringiensis biopesticide production through solid-state fermentation. A production of 3.9
× 108 viable cells g-1 dry matter with a 33% sporulation ratio was achieved for milder hydrolysis conditions,
highlighting the potential of the solid fraction of hydrolysis as a substrate of SSF processes. The proposed
valorization pathway for the OFMSW results in a sugar concentrate with potential for fermentative processes and
a fermented solid containing biopesticides from Bacillus thuringiensis.
| Título traducido de la contribución | Hidrólisis enzimática de la fracción orgánica de residuos sólidos urbanos: Optimización de la fracción sólida para la producción de biopesticida de Bacillus thuringiensis por fermentación en estado sólido |
|---|---|
| Idioma original | Inglés |
| Páginas (desde-hasta) | 304-311 |
| Número de páginas | 8 |
| Publicación | Waste Management |
| Volumen | 137 |
| DOI | |
| Estado | Publicada - 1 ene 2022 |
Palabras clave
- Enzymatic hydrolysis OFMSW Solid-State Fermentation Bacillus thuringiensis Biopesticide
ODS de las Naciones Unidas
Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible
