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The DSC thermal analysis of crystallization behavior in high erucic acid rapeseed oil
Author(s) -
Kawamura K.
Publication year - 1981
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02665590
Subject(s) - crystallization , rapeseed , erucic acid , isothermal process , materials science , transformation (genetics) , vegetable oil , chemical engineering , continuous cooling transformation , thermodynamics , chemistry , organic chemistry , food science , composite material , microstructure , biochemistry , physics , gene , engineering , austenite , bainite
DSC 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 the β form under isothermal cooling conditions. The α form is also transformed to the β 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.