Abstract

AbstractDSC isothermal analysis is used to investigate the crystallization behavior of high erucic acid rapeseed oil (HEAR oil) in conjunction with usual cooling and heating methods. The crystallization of HEAR oil is found to be in two stages and which are accounted for by the crystallization of the α form and its transformation to theβ form under isothermal cooling conditions. Theα form is also transformed to theβ form under constant heating rate conditions (10 K/min), but this transformation is governed by the heating rate. The crystallization behavior of HEAR oil appears to be dominated by its characteristic triglyceride structure as the transformation is completely altered by random interesterification. Further, when HEAR oil is blended with SBO, the crystallization is changed as the SBO component is increased.

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