Synthesis of propyl gallate by transesterification of tannic acid in aqueous media catalysed by immobilised derivatives of tannase from Lactobacillus plantarum

► Enzymatic conversion of tannic acid into propyl gallate. ► An enzymatic transesterification in 70% of water is reported. ► Synthesis of pure propyl gallate with pure gallic acid as by-product. ► Utilisation of immobilised-stabilised tannase as catalyst.