Determination of the effect of olive oil oleogel as a shortening replacer on quality properties of cake

Abstract

This study investigates the potential of using olive oil oleogel as a solid fat substitute in cake production. For this purpose, the shortening content in the cake formula was replaced with 25% (25% Oleogel-cake) and 50% (50% Oleogel-cake) of the oleogel. Only shortening was used as oil in the control sample (Control cake). The specific gravity values of the Control-cake, 25% Oleogel-cake, and 50% Oleogel-cake batters were 0.90 ±0.00, 0.98 ±0.00, and 1.06 ±0.01, respectively. All cake batters displayed shear thinning behaviour (n < 1, pseudoplastic) and conformed to the Herschel-Bulkley model (R2, 0.9975-0.9950). The apparent viscosity values of the cake batters containing oleogel were lower than those of the control cake. G′ values were higher than G′′ values in all cake batters, indicating that all samples had solid-like structures. The highest hardness value belonged to the Control-cake (403.92 ±14.84 g), while the lowest belonged to the 50% Oleogel-cake (303.11 ±12.10 g). As the amount of oleogel added to the cake formulation increased, the elasticity of the cakes increased. Differences between the samples regarding the sensory analysis parameters were statistically insignificant (p > 0.05). The results show that using oleogel as a substitute for shortening in cake preparation has a promising future.