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Journal Articles International Dairy Journal Year : 2020

Effect of different heating temperatures on foaming properties of camel milk proteins: A comparison with bovine milk proteins

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Abstract

The effect of different heat-treatment temperatures (70, 80, 90 and 100 °C) on the foaming properties (foam capacity and stability) and the physicochemical characteristics (surface hydrophobicity, ζ-potential, and interfacial tension values) of camel milk proteins was investigated. Overall, the results showed that while increasing the temperature, greater foamability was measured for camel milk proteins (up to 165%). This behaviour was linked to the heat denaturation and aggregation of camel milk proteins, which led to an increase in the surface hydrophobicity and a decrease in the electronegative charge and interfacial tension. Likewise, our results indicated that the highest β-casein amount in camel milk (∼44% of total proteins) as well as its secondary structure (β-sheet conformation) and its high hydrophobicity, regulated the foaming mechanism of camel milk proteins.
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hal-02620505 , version 1 (22-08-2022)

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Attribution - NonCommercial - CC BY 4.0

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Roua Lajnaf, Ahmed Zouari, Ines Trigui, Hamadi Attia, M.A. Ayadi. Effect of different heating temperatures on foaming properties of camel milk proteins: A comparison with bovine milk proteins. International Dairy Journal, 2020, ⟨10.1016/j.idairyj.2020.104643⟩. ⟨hal-02620505⟩
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