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Abstract:

The aim of this work was to study the interactions and adsorption of caseinoglycomacropeptide (GMP) and GMP:β-lactoglobulin (β-lg) mixed system in the aqueous phase and at the air-water interface. The existence of associative interactions between GMP and β-lg in the aqueous phase was investigated by dynamic light scattering, differential scanning calorimetry (DSC), fluorometry and native PAGE-electrophoresis. The surface pressure isotherm and the static and dynamic surface pressure were determined by tensiometry and surface dilatational properties. The results showed that GMP presented higher surface activity than β-lg at a concentration of 4% wt but β-lg showed higher film forming ability. In the mixed systems β-lg dominated the static and dynamic surface pressure and the rheological properties of interfacial films suggesting that β-lg hinders GMP adsorption because, in simple competition, GMP should dominate because of its higher surface activity. The surface predominance of β-lg can be attributed to binding of GMP to β-lg in the aqueous phase that prevents GMP adsorption on its own. © 2008 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Interactions in the aqueous phase and adsorption at the air-water interface of caseinoglycomacropeptide (GMP) and β-lactoglobulin mixed systems
Autor:Martinez, M.J.; Sánchez, C.C.; Patino, J.M.R.; Pilosof, A.M.R.
Filiación:Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, C/Prof. Garcia Gonzalez, 1, 41012 Seville, Spain
Palabras clave:Competitive adsorption; Dynamic light scattering; Interactions; Interface; Whey proteins; Aqueous phase; Associative interactions; Competitive adsorption; Dilatational properties; Film-forming; Interactions; Interface; Interfacial films; Lactoglobulin; Mixed systems; Rheological properties; Static and dynamics; Surface activities; Surface pressure isotherms; Tensiometry; Water interfaces; Whey proteins; Adsorption; Air; Concentration (process); Dewatering; Differential scanning calorimetry; Dynamic light scattering; Electric load shedding; Electrophoresis; Flow interactions; Laser interferometry; Light scattering; Refraction; Rheology; Surface properties; Phase interfaces; beta lactoglobulin; caseinoglycomacropeptide; glycopeptide; unclassified drug; adsorption; air water interface; aqueous solution; article; concentration response; film; flow kinetics; isotherm; pressure; priority journal; surface pressure; surface property; Adsorption; Air; Calorimetry, Differential Scanning; Electrophoresis, Polyacrylamide Gel; Fluorometry; Lactoglobulins; Peptide Fragments; Surface Properties; Water
Año:2009
Volumen:68
Número:1
Página de inicio:39
Página de fin:47
DOI: http://dx.doi.org/10.1016/j.colsurfb.2008.09.006
Título revista:Colloids and Surfaces B: Biointerfaces
Título revista abreviado:Colloids Surf. B Biointerfaces
ISSN:09277765
CODEN:CSBBE
CAS:beta lactoglobulin, 9045-23-2; Lactoglobulins; Peptide Fragments; Water, 7732-18-5
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09277765_v68_n1_p39_Martinez

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Citas:

---------- APA ----------
Martinez, M.J., Sánchez, C.C., Patino, J.M.R. & Pilosof, A.M.R. (2009) . Interactions in the aqueous phase and adsorption at the air-water interface of caseinoglycomacropeptide (GMP) and β-lactoglobulin mixed systems. Colloids and Surfaces B: Biointerfaces, 68(1), 39-47.
http://dx.doi.org/10.1016/j.colsurfb.2008.09.006
---------- CHICAGO ----------
Martinez, M.J., Sánchez, C.C., Patino, J.M.R., Pilosof, A.M.R. "Interactions in the aqueous phase and adsorption at the air-water interface of caseinoglycomacropeptide (GMP) and β-lactoglobulin mixed systems" . Colloids and Surfaces B: Biointerfaces 68, no. 1 (2009) : 39-47.
http://dx.doi.org/10.1016/j.colsurfb.2008.09.006
---------- MLA ----------
Martinez, M.J., Sánchez, C.C., Patino, J.M.R., Pilosof, A.M.R. "Interactions in the aqueous phase and adsorption at the air-water interface of caseinoglycomacropeptide (GMP) and β-lactoglobulin mixed systems" . Colloids and Surfaces B: Biointerfaces, vol. 68, no. 1, 2009, pp. 39-47.
http://dx.doi.org/10.1016/j.colsurfb.2008.09.006
---------- VANCOUVER ----------
Martinez, M.J., Sánchez, C.C., Patino, J.M.R., Pilosof, A.M.R. Interactions in the aqueous phase and adsorption at the air-water interface of caseinoglycomacropeptide (GMP) and β-lactoglobulin mixed systems. Colloids Surf. B Biointerfaces. 2009;68(1):39-47.
http://dx.doi.org/10.1016/j.colsurfb.2008.09.006