Title: Physical Properties of Nutritive Shortenings Produced from Regioselective Hardening of Soybean Oil with Pt Containing Zeolite
Authors: Philippaerts, An ×
Breesch, Annika
De Cremer, Gert
Kayaert, Pieterjan
Hofkens, Johan
Van den Mooter, Guy
Jacobs, Pierre
Sels, Bert #
Issue Date: Dec-2011
Publisher: The Society
Series Title: Journal of the American Oil Chemists' Society vol:88 issue:12 pages:2023-2034
Abstract: Soybean oil was partially hydrogenated using Pt supported in microporous zeolite ZSM-5 and on mesoporous alumina at various IV. Their fatty acid and triacylglycerol composition were determined with GC and HPLC, respectively, and their physical characteristics were monitored by the slip melting point, solid fat content, melting and crystallization thermograms, polymorphism behavior, and the crystal and solid fat network formation. Both the chemical and physical properties were compared with commercial fat samples. Usage of Pt instead of Ni results in a significant reduction in trans fatty acids in the hardened fat. Moreover, the catalyst support of Pt, viz. zeolite ZSM-5 versus gamma-alumina, markedly affects the TAG composition. Pt/alumina fats contain large amounts of SSS and polyunsaturates (PUFA), making them unsuitable for shortening application. Because of the (regio)selective hydrogenation property of Pt/ZSM-5, sn-2 unsaturates are hydrogenated faster, yielding an enrichment of intermediately reduced TAG. In addition, this unique fat composition shows a high nutritional added-value (high content of oleate, very low content of trans fatty acids, and low content of cholesterol-raising palmitate and myristate) and high thermal stability (very low in linolenate). Moreover, their melting characteristics perfectly match those of commercial shortenings. Pt/zeolite hardened soybean oil contains spherulitic crystals with orthorhombic beta' molecular packing, arranged in an open, flexible solid network, in accordance with their high plasticity.
ISSN: 0003-021X
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
Drug Delivery and Disposition
Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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