Melting and crystallization properties
Figure 1 and Table 2 show melting properties of silflower and sunflower
oils. Melting and crystallization properties of silflower oil were
similar to those of sunflower oil reflecting the similar fatty acid
composition. Silflower oil had broader and wider melting peaks than
sunflower oil, which might be caused by its higher TPC (Huang &
Sathivel, 2010). The predominant type of triacylglycerol of sunflower
oil is LLL (L = linoleic acid) since the major fatty acid in sunflower
oil is linoleic acid (Tan & Che Man, 2000). Therefore, the major
melting and crystallization peaks of silflower and sunflower oils are
likely attributed to the melting and crystallization of LLL.