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dc.creatorAmaral, Tatiana Nunes-
dc.creatorJunqueira, Luciana Affonso-
dc.creatorAlves, Cibele Cristina Oliveira-
dc.creatorOliveira, Natália Leite-
dc.creatorPrado, Mônica Elisabeth Torres-
dc.creatorResende, Jaime Vilela de-
dc.date.accessioned2018-11-01T15:58:10Z-
dc.date.available2018-11-01T15:58:10Z-
dc.date.issued2017-
dc.identifier.citationAMARAL, T. N. et al. Extraction of hydrocolloids from Pereskia Aculeata Miller: reuse of process residue as activated carbon for the pigment-removal phase. Food Science and Technology, Campinas, 2017. doi: 10.1590/1678-457x.10517.pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/31542-
dc.description.abstractHydrocolloids of Pereskia aculeata Miller (OPNH) are potential ingredients in food industry as emulsifiers and stabilizers. The extraction process of OPNH requires the removal of pigments with activated carbon. Because this step is critical to the quality of the ingredient and has an impact on costs, a new activated carbon has been developed with residues from the same process. Residues activated with NaOH and H3PO4 (300 °C, 1 h) were subjected to batch adsorption tests in model solutions of malachite green (MG), carbohydrate and protein. Residue treated with 85% H3PO4 (OPNAC) had higher productivity and MG adsorption capacity, displaying a predominantly microporous surface (MEV/BET) with chemical activation confirmed by TG/FTIR. OPNAC showed higher MG and protein adsorption capacity than the commercial activated carbon (CAC) did. Results for MG-adsorption capacity by OPNAC did not show significant differences in the presence of protein and carbohydrate, presenting the higher affinity of the adsorbent for the dye. Adsorption isotherms showed OPNAC to be more favorable to MG adsorption than CAC, and to have a good fit to Langmuir-Freundlich model. OPNAC made it possible to reduce costs and allowed the sustainability of the process, leading to increased efficiency in selective pigment removal compared with CAC.pt_BR
dc.languageen_USpt_BR
dc.publisherSociedade Brasileira de Ciência e Tecnologia de Alimentospt_BR
dc.rightsacesso abertopt_BR
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.sourceFood Science and Technologypt_BR
dc.subjectMalachite greenpt_BR
dc.subjectPigment-removal phasept_BR
dc.subjectHydrocolloids of pereskia aculeata millerpt_BR
dc.subjectCommercial activated carbonpt_BR
dc.subjectVerde malaquitapt_BR
dc.subjectFase de remoção de pigmentospt_BR
dc.subjectHidrocolóides de pereskia aculeata millerpt_BR
dc.subjectCarvão ativado comercialpt_BR
dc.titleExtraction of hydrocolloids from Pereskia Aculeata Miller: reuse of process residue as activated carbon for the pigment-removal phasept_BR
dc.typeArtigopt_BR
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