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The one\u2010step process was based on cellulose extraction: pomelo peel was treated with alkali, followed by the subsequent recovery of pectin in the liquid fraction. In contrast, the two\u2010step process began with conventional pectin extraction (pH\u20092.5, 80\u2009\u00b0C), after which the remaining solid residue was treated with alkali to extract cellulose.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>RESULTS<\/jats:title>\n                    <jats:p>\n                      Evaluating both yield (based on raw material) and purity, the two\u2010step process produced 17.9% cellulose and 23.3% pectin, with purities of 62.0% and 68.7%, respectively. Compared to commercial cellulose, the cellulose obtained from the two\u2010step process exhibited higher water\u2010holding and swelling capacities. Additionally, the extracted pectin was classified as high\u2010methoxyl pectin. To make the process more sustainable and economical, the recovery of ethanol used for pectin precipitation and washing was investigated. The results showed that the recovered ethanol could efficiently precipitate pectin without affecting its properties, leading to a reduction in ethanol consumption of approximately 40%. The sequential extraction successfully produced two commercially viable products, with estimated chemical processing costs of 0.13\u2009USD\u2009g\n                      <jats:sup>\u22121<\/jats:sup>\n                      for pectin and 0.02\u2009USD\u2009g\n                      <jats:sup>\u22121<\/jats:sup>\n                      for cellulose.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>CONCLUSION<\/jats:title>\n                    <jats:p>Consequently, these findings serve as a foundation for sustainable biomass valorization by illustrating the successful recovery of multiproduct streams from a singular agricultural residue. \u00a9 2026 Society of Chemical Industry.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/jsfa.71039","type":"journal-article","created":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T04:23:47Z","timestamp":1788495827000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A sustainable biorefinery approach for pomelo peel valorization: cellulose and pectin extraction with integrated ethanol recycling"],"prefix":"10.1002","author":[{"given":"Nattida","family":"Poonsawat","sequence":"first","affiliation":[{"name":"Department of Biotechnology, Faculty of Engineering and Industrial Technology Silpakorn University  Nakhon Pathom Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6210-046X","authenticated-orcid":false,"given":"Suwattana","family":"Pruksasri","sequence":"additional","affiliation":[{"name":"Department of Biotechnology, Faculty of Engineering and Industrial Technology Silpakorn University  Nakhon Pathom Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,9,3]]},"reference":[{"key":"e_1_2_11_2_1","unstructured":"Food and Agriculture Organization of the United Nations (FAO) FAOSTAT: crops and livestock products. 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