Oil in water emulsions stabilized by maillard conjugates of sodium caseinate-locust bean gum

Autor(es)

Barbosa, Janaina Miranda ^{[1, 2]} ; Ushikubo, Fernanda Yumi ^[1] ; de Figueiredo Furtado, Guilherme ^[1] ; Cunha, Rosiane Lopes ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Dept Food Engn, BR-13083862 Campinas, SP - Brazil

^[2] Univ Fed Sao Joao del Rei, Dept Food Engn, Sete Lagoas - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY; v. 40, n. 5, p. 634-645, MAY 4 2019.
• Citações Web of Science: 0

Resumo

Conjugates composed by sodium caseinate and locust bean gum (LBG) were produced through Maillard reaction in order to enhance their emulsifying properties. The reactions were performed (80 degrees C/76% relative humidity) at three protein/polysaccharide ratios (0.3, 0.6, 1.2), and the conjugates were added in emulsions at two pH values (3.5 and 7). The formation of protein-polysaccharide conjugates was confirmed by SDS-polyacrylamide gel electrophoresis and by FTIR spectra. At both pH values, the conjugates subjected to longer reaction times presented less emulsifying capability, probably due to insoluble compounds formation. Furthermore, the conjugates provided high stability in O/W emulsions at pH 7 due to the electrostatic repulsion of protein charged groups. However, even though the conjugates were not charged at pH 3.5, the stabilization process occurred at this condition probably due to the formation of a thicker interfacial layer, which provided an increase in steric repulsion between the droplets. Thus, the conjugates formed by sodium caseinate and locust bean gum can be characterized as a good emulsifying agent to be applied in different pH conditions. {[}GRAPHICS] . (AU)

• Processo FAPESP: 08/57906-3 - Instituto Nacional de Fotônica Aplicada à Biologia Celular - INFABIC
• Beneficiário: Hernandes Faustino de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 09/54137-1 - EMUS: aquisição de um analisador de distribuição de tamanho de partículas, um medidor de potencial zeta, um spray dryer e um sistema de cromatografia líquida de ultra alta pressão / espectrômetro de massa
• Beneficiário: Miriam Dupas Hubinger
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários