Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1185686
Registro completo de metadados
Campo DCValorIdioma
dc.contributor.authorOLIVEIRA, J. C. L. de
dc.contributor.authorFREITAS, S. T. de
dc.contributor.authorBRITTO, D. de
dc.date.accessioned2026-03-23T13:44:25Z-
dc.date.available2026-03-23T13:44:25Z-
dc.date.created2026-03-23
dc.date.issued2026
dc.identifier.citationJournal of Food Science and Technology, Feb. 2026.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1185686-
dc.descriptionThe high postharvest losses have affected the profitability of growers worldwide mainly for acerola, a highly perishable fruit. To overcome this, edible coatings with polysaccharides chitosan and galactomannan have been proposed. However, raw polysaccharides are not fully adequate to be used as coatings. In this way, these polysaccharides were chemically modified to get quaternary derivative with improved action on acerola postharvest coating. The chemical modification was confirmed by spectroscopy analyses, showing Infrared peak at 1478 cm−1 and 1 H-NMR at 3.2 ppm. Modified polysaccharide showed reduction in thermogravimetric Tmax (~22–40 °C), tensile stress (~6–30 MPa), and elongation (~6%) in comparison with the parent polymers. The water vapor permeability was similar in both cases (~3 g mm kPa−1 h−1 m−2 ). The swelling degree (<2% in ethanol and >70%) confirms the hydrophilic character of the modified polymers. Analysis by Scanning Electron Microscopy showed a smoother surface for the modified material. The most affected postharvest physiological parameter for stored acerola (18 days, 12 °C, relative humidity 90%) was the respiration rate (CO2 mol kg−1 h−1 ) that was lower for uncoated (1.10 10−2 ±1.96 10−4 ) compared with chitosan derivative (0.99 10−2 ±3.36 10−4 ) coated fruit. This indicates a post-climacteric peak shift and consequent delayed ripening, improving the acerola postharvest losses.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectRevestimento antifúngicoeng
dc.subjectFilme comestíveleng
dc.subjectAlquilação de polissacarídeoseng
dc.subjectGalactomananoeng
dc.titleChemically modified polysaccharides from alternative sources to improve the acerola postharvest quality.
dc.typeArtigo de periódico
dc.subject.thesagroAcerola
dc.subject.thesagroPós-Colheitaeng
dc.subject.thesagroMelhoramento Genético Vegetaleng
dc.subject.nalthesaurusEdible filmseng
dc.subject.nalthesaurusPostharvest technologyeng
dc.subject.nalthesaurusPostharvest physiologyeng
dc.subject.nalthesaurusGalactomannanseng
dc.subject.nalthesaurusMalpighia emarginataeng
dc.description.notesOn-line.
riaa.ainfo.id1185686
riaa.ainfo.lastupdate2026-03-23
dc.identifier.doihttps://doi.org/10.1007/s13197-026-06647-2
dc.contributor.institutionJÚLIO CÉSAR LUCINDO DE OLIVEIRA, UNIVERSIDADE FEDERAL DO VALE DO SÃO FRANCISCO; SERGIO TONETTO DE FREITAS, CPATSA; DOUGLAS DE BRITTO, CPATSA.
Aparece nas coleções:Artigo em periódico indexado (CPATSA)

Arquivos associados a este item:
Arquivo Descrição TamanhoFormato 
Chemically-modified-polysaccharides-from-alternative-sources-to-improve-the-acerola-postharvest-quality..pdf3,21 MBAdobe PDFThumbnail
Visualizar/Abrir
Mostrar registro simples do item Visualizar estatísticas

FacebookTwitterDeliciousLinkedInGoogle BookmarksMySpace