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Artículo

Comparative interfacial in vitro digestion of protein and polysaccharide oil/water films

Bellesi, Fernando AlbertoIcon ; Pizones Ruiz Henestrosa, Víctor ManuelIcon ; Maldonado Valderrama, Julia; Del Castillo Santaella, Teresa; Pilosof, Ana Maria RenataIcon
Fecha de publicación: 01/2018
Editorial: Elsevier Science
Revista: Colloids and Surfaces B: Biointerfaces
ISSN: 0927-7765
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Alimentos y Bebidas

Resumen

The behaviour of proteins (β-lactoglobulin (βlg) and soy protein isolate (SPI)) and a surface active polysaccharide (hydroxypropylmethylcellulose, HPMC) o/w interfacial films under simulated gastrointestinal conditions using the interfacial tensiometer Octopus were compared and related to the performance of the emulsions (using the same emulsifiers) under in vitro digestion. The evolution of interfacial tension (γ) was used to investigate the effect of gastrointestinal fluids on o/w interfacial films. Clear differences were observed among these emulsifiers. During the gastric phase, HPMC showed the lowest change in γ values as compared to protein films. The most important changes occurred during the intestinal stage where it was observed an important decrease of γ associated with the rapid penetration of BS, followed by a lower rate of decrease attributable to the accumulation of FFA at the interface. In the last stage, the subphase was exchanged by buffer alone, to remove the reversibly adsorbed digestion products. SPI formed the most resistant interface to the remotion of digestion products, followed by HPMC and finally by βlg. The results agree with the degree of lipolysis reported for the emulsions stabilized by these emulsifiers, which suggest that lipid digestion could be modulated by the ability of emulsifiers to prevent the BS activity (to adsorb at the O/W interface or remove the inhibitory digestion products from the interface). Thus, emulsifiers-BS interactions appears as a key factor in controlling the lipolysis.
Palabras clave: Bile Salts , Digestion , Interface , Lipolysis
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/60150
DOI: http://dx.doi.org/10.1016/j.colsurfb.2017.11.027
URL: https://www.sciencedirect.com/science/article/pii/S0927776517307634
Colecciones
Articulos(OCA CIUDAD UNIVERSITARIA)
Articulos de OFICINA DE COORDINACION ADMINISTRATIVA CIUDAD UNIVERSITARIA
Citación
Bellesi, Fernando Alberto; Pizones Ruiz Henestrosa, Víctor Manuel; Maldonado Valderrama, Julia; Del Castillo Santaella, Teresa; Pilosof, Ana Maria Renata; Comparative interfacial in vitro digestion of protein and polysaccharide oil/water films; Elsevier Science; Colloids and Surfaces B: Biointerfaces; 161; 1-2018; 547-554
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