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Updated: Jul 20, 2026
Mechanical Separation and Protein Solubilization of the Outer and Inner Perivitelline Sublayers from Hen's Eggs
Published on: January 27, 2021
Preparation of egg white powder using electrohydrodynamic drying method and its effect on quality characteristics and
Haleh Soraiyay Zafar1, Narmela Asefi1, Vahid Siahpoush2
1Department of Food Science and Technology, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Abstract:
This research investigated the effects of spray drying (SD, set at 180 °C), freeze-drying (FD, set at -35 °C), and electrohydrodynamic drying (EHD) with and without the foam-mat method on egg white. The configuration used in EHD was a wire-to-plate type at room temperature. The results showed no significant difference in gel hardness and WHC% (P ≥ 0.05). Also, the foam-mat EHD powders resembled the FD powders in microstructure, appearance, flowability, and absorption intensity of the Amide I and II bands. Furthermore, the foam-mat EHD (DC-) powder had the highest protein content (66.1%), enthalpy (-183.06 J/g), and foaming capacity (725%) (P < 0.05). This finding was proved by FTIR, Raman, and SDS-PAGE tests, which revealed the minor structural changes in proteins (peptide chain structure, Amide I, Amide II, α-helix, and β-sheet). FD powder demonstrated good protein stability in zeta potential and foam stability tests.
