Interactions of polysaccharides with β-lactoglobulin spread monolayers at the air-water interface
In the present work we have studied the static (film structure and elasticity) and dynamic characteristics (surface dilatational properties) of β-lactoglobulin (βLG) monolayers spread at the air-water interface in the presence of polysaccharides in the aqueous phase, at 20°C and at pH 7. The measure...
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2004
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| LEADER | 10891caa a22010817a 4500 | ||
|---|---|---|---|
| 001 | PAPER-4378 | ||
| 003 | AR-BaUEN | ||
| 005 | 20230518203355.0 | ||
| 008 | 190411s2004 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-4043052921 | |
| 024 | 7 | |2 cas |a beta lactoglobulin, 9045-23-2; carrageenan, 9000-07-1, 9049-05-2, 9061-82-9, 9064-57-7; xanthan, 11138-66-2 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 030 | |a FOHYE | ||
| 100 | 1 | |a Baeza, R. | |
| 245 | 1 | 0 | |a Interactions of polysaccharides with β-lactoglobulin spread monolayers at the air-water interface |
| 260 | |c 2004 | ||
| 270 | 1 | 0 | |m Rodríguez Patino, J.M.; Depto. de Ing. Química, Facultad de Química, Univ. Sevilla, C/. Prof. Garcia G., Sevilla, Spain; email: jmrodri@us.es |
| 506 | |2 openaire |e Política editorial | ||
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| 520 | 3 | |a In the present work we have studied the static (film structure and elasticity) and dynamic characteristics (surface dilatational properties) of β-lactoglobulin (βLG) monolayers spread at the air-water interface in the presence of polysaccharides in the aqueous phase, at 20°C and at pH 7. The measurements were performed on a fully automated Wilhelmy-type film balance. As polysaccharides with interfacial activity we have used propylene glycol alginates (PGA). To evaluate the effect of the degree of PGA esterification and viscosity, different commercial samples were studied-kelcoloid O (KO), kelcoloid LVF (KLVF) and manucol ester (MAN). Xanthan gum (XG) and λ-carrageenan (λC) were studied as non-surface active polysaccharides. The results reveal a significant effect of surface active and non-surface active polysaccharides on static - when the polysaccharide was added in the subphase the π-A isotherms shifted to higher surface pressure values as the time increased-and dynamic - the presence of polysaccharide in the aqueous phase decreased the surface dilatational modulus of a pure β-lactoglobulin monolayer-characteristics of β-lactoglobulin monolayers. To explain the observed effects three phenomena were taken into account: (i) the ability of the polysaccharide to adsorb at the interface by it-self and to increase the surface pressure, (ii) the interfacial complexation of the polysaccharide with the adsorbed protein and (iii) the existence of a limited thermodynamic compatibility between the protein and polysaccharide, depending on the protein-polysaccharide system. © 2004 Elsevier Ltd. All rights reserved. |l eng | |
| 536 | |a Detalles de la financiación: Comisión Interministerial de Ciencia y Tecnología, AGL2001-3843-C02-01 | ||
| 536 | |a Detalles de la financiación: CYTED Ciencia y Tecnología para el Desarrollo, XI.17 | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas | ||
| 536 | |a Detalles de la financiación: This research was supported by CYTED through project XI.17 and CICYT through grant AGL2001-3843-C02-01. The authors also acknowledge the support from Universidad de Buenos Aires and Consejo Nacional de Investigaciones Cientı́ficas y Técnicas de la República Argentina. | ||
| 593 | |a Departamento de Industrias, Fac. de Ciencias Exactas Y Naturales, Univ. de Buenos Aires, Cd. Univ., Buenos Aires, Argentina | ||
| 593 | |a Depto. de Ing. Química, Facultad de Química, Univ. Sevilla, C/. Prof. Garcia G., Sevilla, Spain | ||
| 690 | 1 | 0 | |a AIR-WATER INTERFACE |
| 690 | 1 | 0 | |a GUMS |
| 690 | 1 | 0 | |a HYDROCOLLOID |
| 690 | 1 | 0 | |a INTERFACIAL RHEOLOGY |
| 690 | 1 | 0 | |a MONOLAYER |
| 690 | 1 | 0 | |a POLYSACCHARIDE |
| 690 | 1 | 0 | |a PROTEIN |
| 690 | 1 | 0 | |a SURFACE TENSION |
| 690 | 1 | 0 | |a ALGINIC ACID PROPYLENE GLYCOL ESTER |
| 690 | 1 | 0 | |a BETA LACTOGLOBULIN |
| 690 | 1 | 0 | |a CARRAGEENAN |
| 690 | 1 | 0 | |a POLYSACCHARIDE |
| 690 | 1 | 0 | |a XANTHAN |
| 690 | 1 | 0 | |a ADSORPTION |
| 690 | 1 | 0 | |a AQUEOUS SOLUTION |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a ESTERIFICATION |
| 690 | 1 | 0 | |a EVALUATION |
| 690 | 1 | 0 | |a FILM |
| 690 | 1 | 0 | |a FLOW KINETICS |
| 690 | 1 | 0 | |a ISOTHERM |
| 690 | 1 | 0 | |a MOLECULAR DYNAMICS |
| 690 | 1 | 0 | |a MOLECULAR INTERACTION |
| 690 | 1 | 0 | |a SURFACE PROPERTY |
| 690 | 1 | 0 | |a THERMODYNAMICS |
| 690 | 1 | 0 | |a VISCOELASTICITY |
| 700 | 1 | |a Carrera Sanchez, C. | |
| 700 | 1 | |a Pilosof, A.M.R. | |
| 700 | 1 | |a Rodríguez Patino, J.M. | |
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