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

8 p, 2.2 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Engineering > Composting Research Group (GICOM)
Articles > Research articles
Articles > Published articles