Influence of calcium and sodium chloride on caseinomacropeptide self-assembly and flow behaviour at neutral pH

The effect of adding NaCl or CaCl2 on particle size distribution and flow behaviour of caseinomacropeptide (CMP) aqueous solutions was investigated over a wide range of concentrations (0–200 mmol L−1), temperatures (5–60 °C) and during 14 days of storage. In the absence of salts, CMP mainly presente...

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Autores principales: Loria, K.G., Pilosof, A.M.R., Farías, M.E.
Formato: JOUR
Materias:
CaCl2
Caseinomacropeptide
Flow behaviour
NaCl
Salts interactions
Self-assembly
Calcium chloride
Particle size
Particle size analysis
Size distribution
Sodium chloride
Solutions
Viscosity
Concentrated regime
Flow behaviours
Hydrophobic association
Monomeric forms
Small variations
Self assembly
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00236438_v98_n_p598_Loria
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:The effect of adding NaCl or CaCl2 on particle size distribution and flow behaviour of caseinomacropeptide (CMP) aqueous solutions was investigated over a wide range of concentrations (0–200 mmol L−1), temperatures (5–60 °C) and during 14 days of storage. In the absence of salts, CMP mainly presented a monomeric form at pH 7.0. If sodium or calcium chloride is added, hydrophobic associations of CMP is promoted due to screening of electric charges. Calcium chloride had a bigger impact than NaCl. Indeed, small variations in CaCl2 concentration induced major changes in size distributions and increased the viscosity and the cloudiness of CMP solutions upon storage. The largest aggregates and highest viscosities were obtained at concentrated regime (CMP concentration > 8 g/100 g), high CaCl2 concentration (>1.2 mmol g−1 CMP) and upon storage. © 2018 Elsevier Ltd

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