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Artículo

Interfacial and emulsifying properties of amaranth (Amaranthus hypochondriacus) protein isolates under different conditions of pH

Ventureira, Jorge LuisIcon ; Bolontrade, Agustín JuanIcon ; Speroni Aguirre, Francisco JoséIcon ; David Briand, Elisabeth; Scilingo, Adriana Alicia; Ropers, Marie Hélène; Boury, Frank; Añon, Maria CristinaIcon ; Anton, Marc
Fecha de publicación: 01/2012
Editorial: Elsevier Science
Revista: LWT - Food Science and Technology
ISSN: 0023-6438
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Físico-Química, Ciencia de los Polímeros, Electroquímica

Resumen

Amaranth proteins have adequate amino acid balance for substituting either partly or completely animal proteins in human nutrition. However, they present poor emulsifying properties in basic conditions corresponding to their extraction medium. Consequently their use in acidic conditions could be envisaged to better exploit their potentialities. To better understand their emulsifying properties we have studied their interfacial activities at pHs 2.0 and 8.0 and tried to make the link between 2D and 3D properties.Our results clearly demonstrate the better properties of AI at pH 2.0 than at pH 8 in terms of protein solubility, spreading, adsorption, viscoelastic properties of interfaces and emulsion stability. These results are in relation with the denaturated state of proteins at pH 2.0 where proteins form a harder interfacial film, as compared to pH 8.0. Thus the potential use of amaranth proteins in emulsifying applications should be oriented towards acidic applications.
Palabras clave: Amaranth , Dilatational Interfacial Rheology , Emulsifying Properties , Interfacial Properties , Langmuir Isotherm
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)
Identificadores
URI: http://hdl.handle.net/11336/82271
DOI: http://dx.doi.org/10.1016/j.lwt.2011.07.024
URL: https://www.sciencedirect.com/science/article/pii/S0023643811002258
Colecciones
Articulos(CIDCA)
Articulos de CENTRO DE INV EN CRIOTECNOLOGIA DE ALIMENTOS (I)
Citación
Ventureira, Jorge Luis; Bolontrade, Agustín Juan; Speroni Aguirre, Francisco José; David Briand, Elisabeth; Scilingo, Adriana Alicia; et al.; Interfacial and emulsifying properties of amaranth (Amaranthus hypochondriacus) protein isolates under different conditions of pH; Elsevier Science; LWT - Food Science and Technology; 45; 1; 1-2012; 1-7
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