Enzymatic hydrolysis of the organic fraction of municipal solid waste : Optimization and valorization of the solid fraction for Bacillus thuringiensis biopesticide production through solid-state fermentation
Molina-Peñate, Esther (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Sanchez, Antoni (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Artola Casacuberta, Adriana (Universitat Autònoma de Barcelona. Departament d'Enginyeria Química, Biològica i Ambiental)
Date: |
2022 |
Abstract: |
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, 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 × 10 viable cells g 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. |
Grants: |
Agencia Estatal de Investigación PID2020-114087RB-I00
|
Note: |
Altres ajuts: acords transformatius de la UAB |
Note: |
Altres ajuts: Generalitat de Catalunya pre-doctoral grant (DI 7, 2019) |
Rights: |
Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Language: |
Anglès |
Document: |
Article ; recerca ; Versió publicada |
Subject: |
Enzymatic hydrolysis ;
OFMSW ;
Solid-State Fermentation ;
Bacillus thuringiensis ;
Biopesticide |
Published in: |
Waste management (Elmsford), Vol. 137 (January 2022) , p. 304-311, ISSN 1879-2456 |
Adreça alternativa: https://hdl.handle.net/10803/688611
DOI: 10.1016/j.wasman.2021.11.014
PMID: 34823137
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Record created 2022-01-12, last modified 2024-06-12