3.3.1. Stage I
During cooling, a high-melting fraction, likely the high-melting
MP, initiates the crystallization process. This stage corresponds to
the first crystallization peak in Fig. 5 and the melting peak with the
highest peak temperature (52 °C) in Fig. 6D. MP will crystallize in
the α polymorphic form, as shown in the previous part. However,
the melting temperature was lowered (52 °C compared to 68 °C,
see Fig. 3). Following the Hildebrand equation, the melting point of
a high-melting component is reduced when blended with lowermelting
components (Zhou & Hartel, 2006). In addition, it is also possible
that some of the highest-melting components of PO
co-crystallized with the MP, which has a retarding effect on crystallization.
Indeed, Marangoni stated that it is likely that chemical and
structural affinity between the crystallizing TAGs and an emulsifier
which is similar to them, results in co-crystallization of the molecules.
3.3.1. Stage IDuring cooling, a high-melting fraction, likely the high-meltingMP, initiates the crystallization process. This stage corresponds tothe first crystallization peak in Fig. 5 and the melting peak with thehighest peak temperature (52 °C) in Fig. 6D. MP will crystallize inthe α polymorphic form, as shown in the previous part. However,the melting temperature was lowered (52 °C compared to 68 °C,see Fig. 3). Following the Hildebrand equation, the melting point ofa high-melting component is reduced when blended with lowermeltingcomponents (Zhou & Hartel, 2006). In addition, it is also possiblethat some of the highest-melting components of PO co-crystallized with the MP, which has a retarding effect on crystallization.Indeed, Marangoni stated that it is likely that chemical andstructural affinity between the crystallizing TAGs and an emulsifierwhich is similar to them, results in co-crystallization of the molecules.
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