The melting behavior of the shorteningwas affected by both sonication
and tempering conditions. US did not significantly affect Ton nor
melting enthalpy (p N 0.05), but significantly decreased (p b 0.05) Tp
for both tempering conditions. These results suggest that US affects
themelting behavior of the samples by generating amore uniformcrystal
network characterized by a sharper or narrower melting profile
(same Ton, lower Tp). In addition, it is interesting to note that even
though US induced the crystallization of the lipid material and generated
smaller crystals, the amount of crystallinematerial after the tempering
is not affected by sonication (same melting enthalpy value). In
general tempering conditions did not affect Ton or Tp (p N 0.05) but it
significantly affected (p b 0.05) the melting enthalpy with higher
values obtained for the shortenings tempered at lower temperatures
(Table 3). The higher melting enthalpy obtained for the samples tempered
at lower temperatures indicates that more crystals are present
in these samples as suggested above for the viscoelastic behavior.