{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T14:19:39Z","timestamp":1769005179376,"version":"3.49.0"},"reference-count":36,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2023,6,6]],"date-time":"2023-06-06T00:00:00Z","timestamp":1686009600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Compete 2020,","award":["POCI\u221201\u22120247\u2212FEDER\u2212027578"],"award-info":[{"award-number":["POCI\u221201\u22120247\u2212FEDER\u2212027578"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Foods"],"abstract":"<jats:p>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\u2013sulfite 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\u201317.1%) and temperature (18.8\u201361.2 \u00b0C) 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 \u20ac\/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.<\/jats:p>","DOI":"10.3390\/foods12122280","type":"journal-article","created":{"date-parts":[[2023,6,6]],"date-time":"2023-06-06T13:42:06Z","timestamp":1686058926000},"page":"2280","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Sugarcane Straw as a Source of Arabinoxylans: Optimization and Economic Viability of a Two-Step Alkaline Extraction"],"prefix":"10.3390","volume":"12","author":[{"given":"Joana R.","family":"Costa","sequence":"first","affiliation":[{"name":"CBQF\u2013Centro de Biotecnologia e Qu\u00edmica Fina\u2013Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho 1327, 4169\u2013005 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1583-2534","authenticated-orcid":false,"given":"Maria J.","family":"Pereira","sequence":"additional","affiliation":[{"name":"CBQF\u2013Centro de Biotecnologia e Qu\u00edmica Fina\u2013Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho 1327, 4169\u2013005 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2055-8031","authenticated-orcid":false,"given":"S\u00edlvia S.","family":"Pedrosa","sequence":"additional","affiliation":[{"name":"CBQF\u2013Centro de Biotecnologia e Qu\u00edmica Fina\u2013Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho 1327, 4169\u2013005 Porto, Portugal"}]},{"given":"Beatriz","family":"Gull\u00f3n","sequence":"additional","affiliation":[{"name":"Departamento de Enxe\u00f1ar\u00eda Qu\u00edmica, Facultade de Ciencias, Universidade de Vigo, 32004 Ourense, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8691-8255","authenticated-orcid":false,"given":"Nelson M.","family":"de Carvalho","sequence":"additional","affiliation":[{"name":"CBQF\u2013Centro de Biotecnologia e Qu\u00edmica Fina\u2013Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho 1327, 4169\u2013005 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0760-3184","authenticated-orcid":false,"given":"Manuela E.","family":"Pintado","sequence":"additional","affiliation":[{"name":"CBQF\u2013Centro de Biotecnologia e Qu\u00edmica Fina\u2013Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho 1327, 4169\u2013005 Porto, Portugal"}]},{"given":"Ana Raquel","family":"Madureira","sequence":"additional","affiliation":[{"name":"CBQF\u2013Centro de Biotecnologia e Qu\u00edmica Fina\u2013Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho 1327, 4169\u2013005 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"15437","DOI":"10.1021\/acs.jafc.1c04506","article-title":"Isolation, Structural, Functional, and Bioactive Properties of Cereal Arabinoxylan\u2014A Critical Review","volume":"69","author":"He","year":"2021","journal-title":"J. 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