Characterization of a versatile arylesterase from Lactobacillus plantarum active on wine esters
The gene lp-1002 from Lactobacillus plantarum WCFS1 encoding a putative lipase/esterase was cloned and overexpressed in Escherichia coli BL21(DE3). The purified Lp-1002 protein was biochemically characterized. Lp-1002 is an arylesterase which showed high hydrolytic activity on phenyl acetate. Althou...
| Autores: | , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/99870 |
| Acceso en línea: | http://hdl.handle.net/10261/99870 |
| Access Level: | acceso abierto |
| Palabra clave: | Wine aroma Lactic acid bacteria flavor Esterase Ethyl acetate |
| Sumario: | The gene lp-1002 from Lactobacillus plantarum WCFS1 encoding a putative lipase/esterase was cloned and overexpressed in Escherichia coli BL21(DE3). The purified Lp-1002 protein was biochemically characterized. Lp-1002 is an arylesterase which showed high hydrolytic activity on phenyl acetate. Although to a lesser extent, Lp-1002 also hydrolyzed most of the esters assayed including relevant wine aroma compounds. Importantly, Lp-1002 exhibited hydrolytic activity at winemaking conditions, although optimal catalytic activity is observed at 40 °C and pH 5-7. The effect of wine compounds on Lp-1002 activity was assayed. From the compounds assayed (ethanol, sodium metabisulfite, and malic, tartaric, lactic and citric acids), only malic acid slightly inhibited Lp-1002 activity. Lp-1002 is the first arylesterase described in a wine lactic acid bacteria and possessed suitable biochemical properties to be used during winemaking. © 2014 American Chemical Society. |
|---|