Publication
Sugarcane straw as a source of arabinoxylans: optimization and economic viability of a two-step alkaline extraction
| dc.contributor.author | Costa, Joana R. | |
| dc.contributor.author | Pereira, Maria J. | |
| dc.contributor.author | Pedrosa, Sílvia S. | |
| dc.contributor.author | Gullón, Beatriz | |
| dc.contributor.author | Carvalho, Nelson M. de | |
| dc.contributor.author | Pintado, Manuela E. | |
| dc.contributor.author | Madureira, Ana Raquel | |
| dc.date.accessioned | 2023-07-19T10:37:38Z | |
| dc.date.available | 2023-07-19T10:37:38Z | |
| dc.date.issued | 2023-06-06 | |
| dc.description.abstract | Sugarcane processing produces a significant amount of byproducts in the form of straw and bagasse, which are rich in cellulose, hemicellulose, and lignin. This work aims to provide a valorization approach to sugarcane straw by optimizing a two-step alkaline extraction of arabinoxylans by a response surface methodology to evaluate a potential industrial-scale production. Sugarcane straws were delignified using an alkaline–sulfite pretreatment, followed by alkaline extraction and precipitation of arabinoxylan, a two-step process optimized using a response surface methodology. A KOH concentration of (2.93–17.1%) and temperature (18.8–61.2 °C) were chosen as independent variables, and the arabinoxylan yield (%) as a response variable. The model application shows that KOH concentration, temperature, and the interaction between both independent variables are significant in extracting arabinoxylans from straw. The best-performing condition was further characterized by FTIR, DSC, and chemical and molecular weight evaluation. The straws arabinoxylans presented high purities levels, ca. 69.93%, and an average molecular weight of 231 kDa. The overall estimated production cost of arabinoxylan from straw was 0.239 €/g arabinoxylan. This work demonstrates a two-step alkaline extraction of the arabinoxylans method, as well as their chemical characterization and economic viability analysis, that can be used as a model for industrial scale-up production. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.doi | 10.3390/foods12122280 | pt_PT |
| dc.identifier.eid | 85163816380 | |
| dc.identifier.issn | 2304-8158 | |
| dc.identifier.pmc | PMC10297413 | |
| dc.identifier.pmid | 37372491 | |
| dc.identifier.uri | http://hdl.handle.net/10400.14/41783 | |
| dc.identifier.wos | 001017539100001 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Sugarcane straws | pt_PT |
| dc.subject | Arabinoxylan | pt_PT |
| dc.subject | Alkaline extraction | pt_PT |
| dc.subject | Response surface methodology | pt_PT |
| dc.subject | Economic viability | pt_PT |
| dc.title | Sugarcane straw as a source of arabinoxylans: optimization and economic viability of a two-step alkaline extraction | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.issue | 12 | pt_PT |
| oaire.citation.title | Foods | pt_PT |
| oaire.citation.volume | 12 | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |