Emulsifying properties of whey protein concentrate and caseinomacropeptide of cow, ewe and goat

Ana Belen Martin-Diana; J. Frias; J. Fontecha

Emulsifying properties of whey protein concentrate and caseinomacropeptide of cow, ewe and goat

Ana Belen Martin-Diana, J. Frias, J. Fontecha

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Abstract

The emulsifying activity index was shown to be significantly higher in the case of the whey protein concentrate (WPC) compared to caseinomacropeptides (CMP) (185 and 36 m².g^-1, respectively). The emulsifying activity index showed a dependent behaviour on pH and protein concentration for WMP and three CMPs. The emulsifying stability index of WMP changed significantly with pH and ionic strength. For CMPs from the 3 different species, the emulsifying stability did not show a significant variability with respect to pH but showed a dependence on ionic strength. The CMPs had a more stable emulsifying activity index with respect to pH than WMP, suggesting the possible utilisation of CMP as an emulsifier in foods which undergo large pH variations during processing (i.e. fermented dairy products).

Original language	English
Pages (from-to)	363-367
Number of pages	5
Journal	Milchwissenschaft
Volume	60
Issue number	4
Publication status	Published - 2005

Keywords

21 Emulsifying properties (whey protein concentrate, caseinmacropeptide)

Cite this

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AB - The emulsifying activity index was shown to be significantly higher in the case of the whey protein concentrate (WPC) compared to caseinomacropeptides (CMP) (185 and 36 m2.g-1, respectively). The emulsifying activity index showed a dependent behaviour on pH and protein concentration for WMP and three CMPs. The emulsifying stability index of WMP changed significantly with pH and ionic strength. For CMPs from the 3 different species, the emulsifying stability did not show a significant variability with respect to pH but showed a dependence on ionic strength. The CMPs had a more stable emulsifying activity index with respect to pH than WMP, suggesting the possible utilisation of CMP as an emulsifier in foods which undergo large pH variations during processing (i.e. fermented dairy products).

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Emulsifying properties of whey protein concentrate and caseinomacropeptide of cow, ewe and goat

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