Both control and LH-butters
showed a frequency dependant behaviour where G0 > G00 , indicating
a solid-like behaviour at room temperature (Rønholt et al., 2014).
The texture of butter has been found to depend on many interrelated
parameters, and no single factor appears capable of explaining
its consistency (Precht, 1988). The differences in shear modulus
may be attributed to differences in the solid phase of the butters
(Narine & Marangoni, 1999). The fat crystal network of LH-butter
could be small and randomly arranged, which form a weak and
random network which is easily deformed by external forces. On
the other hand, the crystal lattice formed upon the crystallization
process in the control could be highly ordered, which is thus stronger,
resulting in lower spreadability than the LH-butter (Narine &
Marangoni, 1999). The presence of LAB within the microstructure
of butter could have affected the crystal arrangement of the fat,
resulted in a different functionality between the two products.