Artículo
High hydrostatic pressure improves protein solubility and dispersion stability of mineral-added soybean protein isolate
Manassero, Carlos Alberto
; Vaudagna, Sergio Ramon
; Añon, Maria Cristina
; Speroni Aguirre, Francisco José
Fecha de publicación:
01/2015
Editorial:
Elsevier
Revista:
Food Hydrocolloids
ISSN:
0268-005X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The influence of ion type, ion concentration and pH on the effect of high hydrostatic pressure (HHP) on solubility and dispersion stability of soybean protein isolate (SPI) was analyzed. Solubilizing effect of HHP was detected for calcium-, magnesium- and iron- added SPI, the magnitude of this effect was dependent on ion type, ion concentration and pH. The solubilizing effect was highest for calcium, followed by magnesium and iron at pH 7.0. The pH value affected the levels of solubility and the range of calcium concentration where solubility was increased. HHP-denatured soybean proteins may coexist with different minerals and at different pHs in the form of soluble species. For a given calcium concentration, pH may affect the structure of HHP-induced aggregates, leading to different solubilities and dispersion stabilities. HHP improved the stability of insoluble proteins in calcium-added SPI dispersions, avoiding their settling. Our results confirm that thermal treatment and HHP differentially affect protein-protein interactions. A transient dissociation of calcium from proteins during HHP is postulated. This dissociation would play a role in the structure of aggregates. When calcium is present during denaturation, different aggregates may be formed if calcium is bound to (thermal treatment) or transiently dissociated from (HHP) SPI proteins.
Palabras clave:
Calcium
,
High Hydrostatic Pressure
,
Solubility
,
Soybean Proteins Isolate
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Identificadores
Colecciones
Articulos(CIDCA)
Articulos de CENTRO DE INV EN CRIOTECNOLOGIA DE ALIMENTOS (I)
Articulos de CENTRO DE INV EN CRIOTECNOLOGIA DE ALIMENTOS (I)
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Manassero, Carlos Alberto; Vaudagna, Sergio Ramon; Añon, Maria Cristina; Speroni Aguirre, Francisco José; High hydrostatic pressure improves protein solubility and dispersion stability of mineral-added soybean protein isolate; Elsevier; Food Hydrocolloids; 43; 1-2015; 629-635
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