2024-03-28T22:49:53Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1215042020-11-13T13:29:39Zcom_10261_86com_10261_1com_10261_15com_10261_6col_10261_339col_10261_268
DIGITAL.CSIC
author
Carro, Juan
author
Ferreira, Patricia
author
Rodríguez, Leonor
author
Prieto, Alicia
author
Serrano, Ana
author
Balcells, Beatriz
author
Ardá, Ana
author
Jiménez-Barbero, Jesús
author
Gutiérrez Suárez, Ana
author
Martínez, Ángel T.
funder
Ministerio de Economía y Competitividad (España)
2015-01-08
FEBS Journal 282: 3218-3229 (2014)
1742-464X
http://hdl.handle.net/10261/121504
10.1111/febs.13177
http://dx.doi.org/10.13039/501100003329
25495853
Oxidative conversion of 5-hydroxymethylfurfural (HMF) is of biotechnological interest for the production of renewable (lignocellulose-based) platform chemicals, such as 2,5-furandicarboxylic acid (FDCA). To the best of our knowledge, the ability of fungal aryl-alcohol oxidase (AAO) to oxidize HMF is reported here for the first time, resulting in almost complete conversion into 2,5-formylfurancarboxylic acid (FFCA) in a few hours. The reaction starts with alcohol oxidation, yielding 2,5-diformylfuran (DFF), which is rapidly converted into FFCA by carbonyl oxidation, most probably without leaving the enzyme active site. This agrees with the similar catalytic efficiencies of the enzyme with respect to oxidization of HMF and DFF, and its very low activity on 2,5-hydroxymethylfurancarboxylic acid (which was not detected by GC-MS). However, AAO was found to be unable to directly oxidize the carbonyl group in FFCA, and only modest amounts of FDCA are formed from HMF (most probably by chemical oxidation of FFCA by the H2O2 previously generated by AAO). As aldehyde oxidation by AAO proceeds via the corresponding geminal diols (aldehyde hydrates), the various carbonyl oxidation rates may be related to the low degree of hydration of FFCA compared with DFF. The conversion of HMF was completed by introducing a fungal unspecific heme peroxygenase that uses the H2O2 generated by AAO to transform FFCA into FDCA, albeit more slowly than the previous AAO reactions. By adding this peroxygenase when FFCA production by AAO has been completed, transformation of HMF into FDCA may be achieved in a reaction cascade in which O2 is the only co-substrate required, and water is the only by-product formed. © 2014 The Authors. FEBS Journal published by John Wiley & Sons Ltd on behalf of FEBS.
eng
openAccess
2,5-formylfurancarboxylic acid
2,5-furandicarboxylic acid
5-hydroxymethylfurfural
Aryl-alcohol oxidase
Unspecific peroxygenase
5-hydroxymethylfurfural conversion by fungal aryl-alcohol oxidase and unspecific peroxygenase
artículo
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URL
https://digital.csic.es/bitstream/10261/121504/1/Carro_et_al-2015-FEBS_Journal.pdf
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https://digital.csic.es/bitstream/10261/121504/7/Carro_et_al-2015-FEBS_Journal.pdf.txt
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Carro_et_al-2015-FEBS_Journal.pdf.txt