Influence of the water content in the synthesis of fructose laurate by immobilized lipase B of Candida antarctica (Novozym 435)
University of Liège, Gembloux Agro-Bio Tech., Passage des Déportés 2, B-5030 Gembloux, Belgium et École Industrielle et Commerciale de la Ville de Namur (EICVN), Rue Pépin 2B, B-5000 Namur, Belgium
University of Liège, Gembloux Agro-Bio Tech., Passage des Déportés 2, B-5030 Gembloux, Belgium
University of Liège, Gembloux Agro-Bio Tech., Passage des Déportés 2, B-5030 Gembloux, Belgium
Abstract
New synthesis conditions for a direct esterification of fructose by lauric acid with Novozym 435 as a catalyst are reported in this paper. With these new conditions, a conversion rate of 72 % was achieved, which is almost the same value as in the case of transesterification where no water as by-product is produced (74.6 %). The conversion rate of these reactions can be modeled as a function of the initial water content by a three-parameter power law for the esterification and by an exponential law for the transesterification. The influence of the water content on the mono over di-ester ratio will also be discussed to a lesser extent.