Journal
QUIMICA NOVA
Volume 32, Issue 4, Pages 939-945Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.1590/S0100-40422009000400021
Keywords
chemical interesterification; reaction time; low trans fat
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Chemical interesterification is an important alternative to produce zero trans fats. In practice, however, excessive reaction times are used to ensure complete randomization. This work evaluated the influence of the reaction time on the interesterification of soybean oil/fully hydrogenated soybean oil blend, carried out in the following conditions: 100 degrees C, 500 rpm stirring speed, 0.4% (w/w) sodium methoxide catalyst. The triacylglycerol composition, solid fat content and melting point analysis showed that the reaction was very fast, reaching the equilibrium within 5 min. This result suggests the interesterification can be performed in substantially lower times, with reduction in process costs.
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