{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T17:20:09Z","timestamp":1776446409317,"version":"3.51.2"},"reference-count":33,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2023,9,16]],"date-time":"2023-09-16T00:00:00Z","timestamp":1694822400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico (CNPq, Brazil)","doi-asserted-by":"publisher","award":["403121\/2016-7"],"award-info":[{"award-number":["403121\/2016-7"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100003593","name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico (CNPq, Brazil)","doi-asserted-by":"publisher","award":["code 001, Process 00214342204"],"award-info":[{"award-number":["code 001, Process 00214342204"]}],"id":[{"id":"10.13039\/501100003593","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior (CAPES, Brazil)","doi-asserted-by":"publisher","award":["403121\/2016-7"],"award-info":[{"award-number":["403121\/2016-7"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002322","name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior (CAPES, Brazil)","doi-asserted-by":"publisher","award":["code 001, Process 00214342204"],"award-info":[{"award-number":["code 001, Process 00214342204"]}],"id":[{"id":"10.13039\/501100002322","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>A\u00e7ai seeds have been discarded improperly around the Amazonia region, but they can be seen as promising low-cost substrates for fermentation processes. The structural carbohydrates and physicochemical characterization of a\u00e7ai seeds from the Amazonia were assessed followed by the determination of the optimal hydrolysis conditions using H3PO4 (phosphoric acid) and H2SO4 (sulfuric acid) to obtain a liquor with high contents of simple carbohydrates and low levels of potential microbial inhibitors usually generated during acid hydrolysis of carbohydrates. A central composite rotational design was carried out varying the concentrations of diluted acid (0\u20135%, w\/v), solids (0.1\u201325%, w\/v), and hydrolysis time (9.5\u2013110 min). Acid hydrolysis with H2SO4 was more effective in producing reducing sugars (15.9\u2013103.1 g\/L) than H3PO4 (2.9\u201333.9 g\/L) during optimization. The optimal hydrolysis conditions with H2SO4 were 3.5% of acid (w\/v), 25% of solids during 70 min at 121 \u00b0C, which provided a liquor with 55 g\/L of reducing sugars and low levels of microbial inhibitors: acetic acid (1.8 g\/L), hydroxymethyl furfural (338 mg\/L), and furfural (10 mg\/L). Thus, a\u00e7ai seeds were characterized as promising agroindustrial waste with high potential to be used as a low-cost substrate in biotechnological processes, comprising relevant environmental and bioeconomic aspects for the development of the Amazonia.<\/jats:p>","DOI":"10.3390\/molecules28186661","type":"journal-article","created":{"date-parts":[[2023,9,17]],"date-time":"2023-09-17T23:32:27Z","timestamp":1694993547000},"page":"6661","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["A\u00e7ai Seeds (Euterpe oleracea Mart) Are Agroindustrial Waste with High Potential to Produce Low-Cost Substrates after Acid Hydrolysis"],"prefix":"10.3390","volume":"28","author":[{"given":"Willen","family":"Igreja","sequence":"first","affiliation":[{"name":"Postgraduate Program of Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"}]},{"given":"Luiza","family":"da Silva Martins","sequence":"additional","affiliation":[{"name":"Postgraduate Program of Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"},{"name":"Instituto de Sa\u00fade e Produ\u00e7\u00e3o Animal (ISPA), Universidade Federal Rural da Amaz\u00f4nia (UFRA), Bel\u00e9m 66075-900, PA, Brazil"}]},{"given":"Rafaela","family":"de Almeida","sequence":"additional","affiliation":[{"name":"School of Food Engineering (FEA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1778-3043","authenticated-orcid":false,"given":"Johnatt","family":"de Oliveira","sequence":"additional","affiliation":[{"name":"Postgraduate Program of Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"},{"name":"Nutrition College, Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8584-5859","authenticated-orcid":false,"given":"Alessandra","family":"Lopes","sequence":"additional","affiliation":[{"name":"Postgraduate Program of Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"},{"name":"School of Food Engineering (FEA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4549-3297","authenticated-orcid":false,"given":"Renan","family":"Chist\u00e9","sequence":"additional","affiliation":[{"name":"Postgraduate Program of Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"},{"name":"School of Food Engineering (FEA), Institute of Technology (ITEC), Federal University of Par\u00e1 (UFPA), Bel\u00e9m 66075-110, PA, Brazil"}]}],"member":"1968","published-online":{"date-parts":[[2023,9,16]]},"reference":[{"key":"ref_1","unstructured":"EMBRAPA (2023, March 15). 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