Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface
In this work we have studied the impact of the competitive adsorption of a whey protein concentrate (WPC) and three well characterized hydroxypropyl-methyl-cellulose (HPMCs), commercially known as E4 M, E50LV and F4 M, on the surface dilatational properties (surface dilatational modulus, E, surface...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02608774_v94_n3-4_p274_Perez |
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todo:paper_02608774_v94_n3-4_p274_Perez2023-10-03T15:12:24Z Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface Pérez, O.E. Carrera Sánchez, C. Pilosof, A.M.R. Rodríguez Patino, J.M. Adsorption Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Polysaccharide Protein-polysaccharide mixed films Surface dilatational properties Surface rheology Whey protein concentrate Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Surface rheology Whey protein concentrate Adsorption Air Biomolecules Biopolymers Cellulose Cellulose films Cements Dewatering Elasticity Gelation Plasticity Polysaccharides Rheology Surface properties Tanning Viscosity Phase interfaces Adsorption Air Cellulose Cellulose Film Cement Concentrates Drainage Elasticity Gelation Hydroxypropyl Methyl Cellulose Milk Plasticity Polysaccharides Proteins Rheology Surface Properties In this work we have studied the impact of the competitive adsorption of a whey protein concentrate (WPC) and three well characterized hydroxypropyl-methyl-cellulose (HPMCs), commercially known as E4 M, E50LV and F4 M, on the surface dilatational properties (surface dilatational modulus, E, surface dilatational elasticity, Ed, and loss angle tangent, tan δ) of mixed films adsorbed at the air-water interface. The increase in Ed values with adsorption time could be associated with biopolymer adsorption at the interface. The surface dilatational properties depend on the WPC and HPMC concentrations in the aqueous phase and on the WPC/HPMC ratio. Although the values of Ed were mainly determined by HPMC at short adsorption times, for mixed systems with the lowest protein concentration (1 × 10-4 wt%) the Ed values were close to those of HPMCs, even at long term adsorption. The values of tan δ indicate the formation of adsorbed mixed films with high viscoelasticity, with a gel structure, which in turn should be attributed to the association of biopolymer molecules occurring at the interface. Only one biopolymer is the dominant one in the solid character of these mixed systems. HPMC at high concentrations slightly reduced the long-term solid character of the films confirming the existence of competition for the air-water interface as expected with two surface-active biopolymers with high molecular weight. © 2009 Elsevier Ltd. All rights reserved. Fil:Pérez, O.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Pilosof, A.M.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v94_n3-4_p274_Perez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Adsorption Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Polysaccharide Protein-polysaccharide mixed films Surface dilatational properties Surface rheology Whey protein concentrate Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Surface rheology Whey protein concentrate Adsorption Air Biomolecules Biopolymers Cellulose Cellulose films Cements Dewatering Elasticity Gelation Plasticity Polysaccharides Rheology Surface properties Tanning Viscosity Phase interfaces Adsorption Air Cellulose Cellulose Film Cement Concentrates Drainage Elasticity Gelation Hydroxypropyl Methyl Cellulose Milk Plasticity Polysaccharides Proteins Rheology Surface Properties |
| spellingShingle |
Adsorption Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Polysaccharide Protein-polysaccharide mixed films Surface dilatational properties Surface rheology Whey protein concentrate Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Surface rheology Whey protein concentrate Adsorption Air Biomolecules Biopolymers Cellulose Cellulose films Cements Dewatering Elasticity Gelation Plasticity Polysaccharides Rheology Surface properties Tanning Viscosity Phase interfaces Adsorption Air Cellulose Cellulose Film Cement Concentrates Drainage Elasticity Gelation Hydroxypropyl Methyl Cellulose Milk Plasticity Polysaccharides Proteins Rheology Surface Properties Pérez, O.E. Carrera Sánchez, C. Pilosof, A.M.R. Rodríguez Patino, J.M. Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| topic_facet |
Adsorption Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Polysaccharide Protein-polysaccharide mixed films Surface dilatational properties Surface rheology Whey protein concentrate Air-water interface Competitive adsorption Hydroxypropyl-methyl-cellulose Milk protein Surface rheology Whey protein concentrate Adsorption Air Biomolecules Biopolymers Cellulose Cellulose films Cements Dewatering Elasticity Gelation Plasticity Polysaccharides Rheology Surface properties Tanning Viscosity Phase interfaces Adsorption Air Cellulose Cellulose Film Cement Concentrates Drainage Elasticity Gelation Hydroxypropyl Methyl Cellulose Milk Plasticity Polysaccharides Proteins Rheology Surface Properties |
| description |
In this work we have studied the impact of the competitive adsorption of a whey protein concentrate (WPC) and three well characterized hydroxypropyl-methyl-cellulose (HPMCs), commercially known as E4 M, E50LV and F4 M, on the surface dilatational properties (surface dilatational modulus, E, surface dilatational elasticity, Ed, and loss angle tangent, tan δ) of mixed films adsorbed at the air-water interface. The increase in Ed values with adsorption time could be associated with biopolymer adsorption at the interface. The surface dilatational properties depend on the WPC and HPMC concentrations in the aqueous phase and on the WPC/HPMC ratio. Although the values of Ed were mainly determined by HPMC at short adsorption times, for mixed systems with the lowest protein concentration (1 × 10-4 wt%) the Ed values were close to those of HPMCs, even at long term adsorption. The values of tan δ indicate the formation of adsorbed mixed films with high viscoelasticity, with a gel structure, which in turn should be attributed to the association of biopolymer molecules occurring at the interface. Only one biopolymer is the dominant one in the solid character of these mixed systems. HPMC at high concentrations slightly reduced the long-term solid character of the films confirming the existence of competition for the air-water interface as expected with two surface-active biopolymers with high molecular weight. © 2009 Elsevier Ltd. All rights reserved. |
| format |
JOUR |
| author |
Pérez, O.E. Carrera Sánchez, C. Pilosof, A.M.R. Rodríguez Patino, J.M. |
| author_facet |
Pérez, O.E. Carrera Sánchez, C. Pilosof, A.M.R. Rodríguez Patino, J.M. |
| author_sort |
Pérez, O.E. |
| title |
Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| title_short |
Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| title_full |
Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| title_fullStr |
Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| title_full_unstemmed |
Surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| title_sort |
surface dilatational properties of whey protein and hydroxypropyl-methyl-cellulose mixed systems at the air-water interface |
| url |
http://hdl.handle.net/20.500.12110/paper_02608774_v94_n3-4_p274_Perez |
| work_keys_str_mv |
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| _version_ |
1807315456426508288 |