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
Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.
| Veröffentlicht in: | Waste management (New York, N.Y.). - 1999. - 137(2022) vom: 01. Jan., Seite 304-311 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2022
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| Zugriff auf das übergeordnete Werk: | Waste management (New York, N.Y.) |
| Schlagworte: | Journal Article Bacillus thuringiensis Biopesticide Enzymatic hydrolysis OFMSW Solid-State Fermentation Biological Control Agents Solid Waste |
| Zusammenfassung: | Copyright © 2021 The Authors. Published by Elsevier Ltd.. All rights reserved. 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 |
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| Beschreibung: | Date Completed 07.12.2021 Date Revised 14.12.2021 published: Print-Electronic Citation Status MEDLINE |
| ISSN: | 1879-2456 |
| DOI: | 10.1016/j.wasman.2021.11.014 |