Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/63853
Type: Artigo de periódico
Title: Effect of diacylglycerol addition on crystallization properties of pure triacylglycerols
Author: Silva, RC
Soares, FASD
Maruyama, JM
Dagostinho, NR
Silva, YA
Calligaris, GA
Ribeiro, APB
Cardoso, LP
Gioielli, LA
Abstract: The objective of this study was to investigate the effects of blending triacylglycerols (TAGs) and diacylglycerols (DAGs) on the melting and crystallization properties in a fat system. To this end, differential scanning calorimetry (DSC), X-ray diffraction (XRD) and polarized light microscopy (PLM) methods were used. Different DAGs (diolein-OO, dipalmitin PP and distearin-SS) were added at 5% to each TAG (triolein-OOO, tripalmitin-PPP and tristearin-SSS). DSC results showed that the addition of DAGs delayed the onset of crystallization of saturated TAGs (PPP and SSS). By contrast, the addition of DAGs to unsaturated TAG (OOO) accelerated the onset of crystallization, with the appearance of an extra crystallization peak upon the addition of SS and PP. PLM results revealed that the addition of OO affected the polymorphic transition of the TAGs studied findings were consistent with DSC melting curves and XRD results. (C) 2013 Elsevier Ltd. All rights reserved.
Subject: Triacylglycerols
Microscopy
Tripalmitin
Tristearin
Polymorphism
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.foodres.2013.11.037
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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