%0 Journal Article
%A Fernandez-Lorente, Gloria 
%A Bolívar Bolívar, Juan Manuel
%A Rocha Martín, Javier
%A Curiel, Jose 
%A Muñoz, Rosario 
%A Rivas, Blanca de las 
%A Carrascosa, Alfonso 
%A Guisan, Jose 
%T Synthesis of propyl gallate by transesterification of tannic acid in aqueous media catalysed by immobilised derivatives of tannase from Lactobacillus plantarum
%D 2011
%@ 0308-8146
%U https://hdl.handle.net/20.500.14352/98744
%X Immobilised derivatives of tannase from Lactobacillus plantarum were able to catalyse the transesterification of tannic acid by using moderate concentrations of 1-propanol in aqueous media. Transesterification of tannic acid was very similar to transesterification of methyl gallate. The synthetic yield depended on the pH and concentration of 1-propanol, although it did not vary much when using 30% or 50% 1-propanol. Synthetic yields of 45% were obtained with 30% of 1-propanol at pH 5.0. The product was chromatographically pure, and the reaction by-product was 55% pure gallic acid. On the other hand, immobilised tannase was fairly stable under optimal reaction conditions.
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