Sorbitan and sucrose esters as modifiers of the solidification properties of zero trans fats

Autor(es)

Fontenele Domingues, Maria Aliciane ; Badan Ribeiro, Ana Paula ; Chiu, Ming Chih ; Guaraldo Goncalves, Lireny Aparecida

• Tipo de documento: Artigo Científico
• Fonte: LWT-FOOD SCIENCE AND TECHNOLOGY; v. 62, n. 1, p. 9-pg., 2015-06-01.

Resumo

Crystallization is the most important physical problem encountered in the industrial use of fats and oils. In this context, the objective of the present study was to analyze the action of sorbitan tristearate (STS) and sucrose stearate (SE) as potential modifiers of crystallization of the unsaturated triacylglycerols and to evaluate their effects on the physical properties of zero trans fat from soybean oil and fully hydrogenated soybean oil. The zero trans fat was obtained via chemical interesterification of a blend of soybean oil (70 g/100 g) and fully hydrogenated soybean oil (30 g/100 g). Samples containing 1 g/100 g, 3 g/100 g, and 5 g/100 g STS or SE were prepared and their crystallization properties were evaluated on the basis of the solid fat content (SFC), melting point, consistency, microstructure and visualization of the three-dimensional crystalline network. Both emulsifiers contributed to SFC adequacy, enhancing the consistency of the fat. As for compatibility, both emulsifiers were compatible with the interesterified fat. This was confirmed by the change in linearity of the curves at 15-20 degrees C. Samples with STS presented higher fractal dimension, indicating greater organization of the crystal lattice. Similarly, the visualization of three-dimensional crystalline network showed firmer structures for samples with STS compared with the samples SE. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 09/53006-0 - Modificação, controle e estabilização do comportamento de cristalização e polimorfismo em gorduras, com ênfase na manteiga de cacau e no óleo de palma
• Beneficiário: Theo Guenter Kieckbusch
• Modalidade de apoio: Auxílio à Pesquisa - Temático