Gelatins were prepared from chicken and turkey heads in a series of batch extractions at 2 different temperatures (50 and 60°C), and their composition and functional properties were evaluated. Gelatin yield from chicken and turkey heads was 52.29 and 62.76%, respectively, on a dry weight basis relative to the total collagen content in the raw materials. The gel strength of turkey gelatins varied from 332.7 to 368.4 g, which was significantly (P < 0.05) higher than that of chicken gelatins. Both chicken and turkey head gelatins had high solubility at acidic and alkaline pH values. However, turkey head gelatins showed better emulsifying and foaming properties compared with chicken gelatins.
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