Partitioning of α-lactalbumin and β-lactoglobulin from cheese whey in aqueous two-phase systems containing poly (ethylene glycol) and sodium polyacrylat

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Autor(es): dc.creatorAlcântara, Lizzy Ayra Pereira-
Autor(es): dc.creatorAmaral, Isabella Vieira-
Autor(es): dc.creatorBonomo, Renata Cristina Ferreira-
Autor(es): dc.creatorSilva, Luis Henrique Mendes da-
Autor(es): dc.creatorSilva, Maria do Carmo Hespanhol da-
Autor(es): dc.creatorMinim, Valéria Paula Rodrigues-
Autor(es): dc.creatorMinim, Luis Antonio-
Data de aceite: dc.date.accessioned2026-02-09T11:54:41Z-
Data de disponibilização: dc.date.available2026-02-09T11:54:41Z-
Data de envio: dc.date.issued2020-02-02-
Data de envio: dc.date.issued2020-02-02-
Data de envio: dc.date.issued2014-10-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/38798-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0960308513000977-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1150163-
Descrição: dc.descriptionPartitioning behavior of the whey proteins α-lactalbumin (α-la) and β-lactoglobulin (β-lg) in aqueous two-phase systems prepared with poly ethylene glycol (PEG) and sodium polyacrilate (NaPA) was investigated as a function of pH and polymer concentrations. It was observed that α-la concentrated in the PEG phase while β-lg concentrated in the NaPA phase. Response surface methodology was applied to optimize protein partitioning and to achieve the best conditions for their fractionation. Thermodynamic analysis based on isothermal titration microcalorimetry indicated that the partitioning of α-la was accompanied by endothermic heat and was entropically driven, while β-lg partitioning was accompanied by exothermic heat and was enthalpically driven at low polymer concentrations and entropically driven at high polymer concentrations. Purification and yield parameters were determined using fresh whey and the results allowed for conclusion of the great applicability of this new system for α-la and β-lg fractionation.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceFood and Bioproducts Processing-
Palavras-chave: dc.subjectAqueous two-phase system-
Palavras-chave: dc.subjectPartitioning-
Palavras-chave: dc.subjectWhey protein-
Palavras-chave: dc.subjectOptimization-
Palavras-chave: dc.subjectMicrocalorimetry-
Título: dc.titlePartitioning of α-lactalbumin and β-lactoglobulin from cheese whey in aqueous two-phase systems containing poly (ethylene glycol) and sodium polyacrylat-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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