Publication
A circular economy approach to leather by products valorization towards a zero-waste process
| dc.contributor.author | Bonifácio-Lopes, Teresa | |
| dc.contributor.author | Afonso, Tiago Barros | |
| dc.contributor.author | Coscueta, Ezequiel | |
| dc.contributor.author | Costa, Eduardo M. | |
| dc.contributor.author | Pintado, Manuela | |
| dc.date.accessioned | 2024-07-11T16:51:20Z | |
| dc.date.available | 2024-07-11T16:51:20Z | |
| dc.date.issued | 2024-05-13 | |
| dc.description.abstract | Introduction: The tanning industry has a significant waste production and is a major contributor to environmental pollution; The adoption of circular economy principles will help repurposing by-products with a focus on reutilizing leather remnants; With this approach, the objective is to minimize environmental damage and effectively manage waste; This will contribute to sustainability with a reduction of overall waste and will align with UN sustainability goal 12 (Ensure sustainable consumption and production patterns) through the re-use of by products. Objectives: Exploration of different enzymes and conditions to enhance leather industry hydrolysis process to achieve a more sustainable and circular approach; Creation of versatile functional coatings within the leather industry; Utilization of commercial enzyme (Protabate P) and alternative enzymes (Bromelain and Alcalase) to validate its use; Valorization of protein-rich leather by-products. Conclusion: Protabate P 10% 24 h had higher hydrolysis degree (49.66%) and higher total protein (55103.43 μg protein/mL) than all the other enzymes. Regarding antioxidant activity, Alcalase 10% 24 h showed higher values (39.32 μM Trolox equivalents/mL). Apart from total protein, Bromelain 10% 24 h showed the lowest values for hydrolysis degree and antioxidant activity. Between time 0 and pre-final, molecules with MW <0.2 kDa consistently have a higher area. Conducting an enzyme inactivation (2 h/90 ºC) might result in molecule aggregation, leading to an increase in molecules with MW exceeding 50 kDa. Re-using leather byproducts can help the tanning industry to reduce the waste and achieve the UN sustainability goal nr 12. This study outlines the potential of re-using leather by-products to create versatile functional coatings through a circular and more sustainable process. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.14/45744 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.title | A circular economy approach to leather by products valorization towards a zero-waste process | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Germany | pt_PT |
| oaire.citation.title | 8th Green and Sustainable Chemistry Conference | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |