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Título: | Synthesis of propyl gallate by transesterification of tannic acid in aqueous media catalysed by immobilised derivatives of tannase from Lactobacillus plantarum |
Autor: | Fernández-Lorente, Gloria CSIC ORCID ; Bolívar Bolívar, Juan Manuel; Rocha-Martín, Javier CSIC ORCID ; Curiel, José Antonio CSIC ORCID ; Muñoz, Rosario CSIC ORCID ; Rivas, Blanca de las CSIC ORCID; Carrascosa, Alfonso V. CSIC ORCID ; Guisán, José Manuel CSIC ORCID | Palabras clave: | Transesterifications in aqueous media Natural antioxidants 1-propanol |
Fecha de publicación: | 1-sep-2011 | Editor: | Elsevier | Citación: | Food Chemistry 128(1): 214–217 (2011) | Resumen: | 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. | Versión del editor: | http://dx.doi.org/doi:10.1016/j.foodchem.2011.02.057 | URI: | http://hdl.handle.net/10261/48287 | DOI: | 10.1016/j.foodchem.2011.02.057 | ISSN: | 0308-8146 |
Aparece en las colecciones: | (IFI) Artículos (ICP) Artículos |
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