Abstract
Ultrasonicated squid ovary powder (USOP) was used to replace egg white powder (EWP) at different substitution levels (12.5-100%) and its effects on properties of batter and cake were investigated. High elastic modulus (G') and average bubble size of batter added with 100% USOP resulted in higher volume and lower baking loss, when compared to the control cake (100% EWP). For textural analysis, the lowest values of hardness, gumminess and chewiness were noticeable for cake containing 100% USOP. Crust showed the lower moisture content than crumb and bottom part of all the cakes. No difference in moisture content was observed for all parts of the cakes containing 25-100% USOP, while lower moisture content was obtained for cake added with 12.5% USOP and the control. The color difference (ΔE*) between the control and cake added with USOP was increased with increasing USOP levels. When 100% of USOP was added into cake, higher likeness score was obtained for firmness and overall likeness. Microstructure study of cake added with 100% USOP revealed that oil phase was distributed in gluten matrix more uniformly, when compared to the control. Thus, replacement of EWP with 100% USOP resulted in the production of cake with superior quality and increased overall acceptance by consumers.
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