Conclusion
Oil replacement by an extruded flour paste helps to minimize
the sensory changes of reduced fat cakes, but modified batter
density and microscopy, by reducing the number of bubbles and increasing their size, and also reducing the viscoelastic
properties. These changes produced the decrease in the volume
of the final cake and a worse crumb appearance and a
harder texture. Nevertheless, the addition of emulsifier minimized
these differences. Emulsifier maintained the physical
characteristics of the product, such as the batter properties
and cake volume, and reduced its hardness while improving
the consumer acceptability of the reduced fat cakes compared
to the control. Thus, this study has shown that the substitution
of oil within the cake formulation by an extruded flour paste
up to 2/3 replacement and with the addition of emulsifier can
be an effective fat replacer.