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Brewer’s spent grain as a no-cost substrate for polyhydroxyalkanoates production: assessment of pretreatment strategies and different bacterial strains

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dc.contributor Universitat de Vic - Universitat Central de Catalunya. CT BETA
dc.contributor.author Corchado-Lopo, Carlos
dc.contributor.author Martínez-Avila, Oscar
dc.contributor.author Marti Serrano, Elisabet
dc.contributor.author Llimós Turet, Jordi
dc.contributor.author Busquets Monsó, Anna M.
dc.contributor.author Kucera, Dan
dc.contributor.author Obruca, Stanislav
dc.contributor.author Llenas, Laia
dc.contributor.author Ponsá Salas, Sergio
dc.date.accessioned 2021-03-22T08:08:19Z
dc.date.available 2021-03-22T08:08:19Z
dc.date.created 2021
dc.date.issued 2021
dc.identifier.citation Corchado-Lopo, C., Martínez-Avila, O., Marti, E., Llimós, J., Busquets, A. M., Kucera, D., Llenas, L., Ponsá S. (2021). Brewer's spent grain as a no-cost substrate for polyhydroxyalkanoates production: Assessment of pretreatment strategies and different bacterial strains . New Biotechnology, 62, 60-67 https://doi.org/ 10.1016/j.nbt.2021.01.009. es
dc.identifier.issn 1871-6784
dc.identifier.uri http://hdl.handle.net/10854/6605
dc.description.abstract Polyhydroxyalkanoates (PHAs) are polyesters of significant interest due to their biodegradability and properties similar to petroleum-derived plastics, as well as the fact that they can be produced from renewable sources such as by-product streams. In this study, brewer’s spent grain (BSG), the main by-product of the brewing industry, was subjected to a set of physicochemical pretreatments and their effect on the release of reducing sugars (RS) was evaluated. The RS obtained were used as a substrate for further PHA production in Burkholderia cepacia, Bacillus cereus, and Cupriavidus necator in liquid cultures. Although some pretreatments proved efficient in releasing RS (acidthermal pretreatment up to 42.1 gRS L-1 and 0.77 gRS g-1 dried BSG), the generation of inhibitors in such scenarios likely affected PHA production compared with the process run without pretreatment (direct enzymatic hydrolysis of BSG). Thus, the maximum PHA accumulation from BSG hydrolysates was found in the reference case with 0.31 ± 0.02 g PHA per g cell dried weight, corresponding to 1.13 ± 0.06 g L-1 and a PHA yield of 23 ± 1 mg g-1 BSG. It was also found that C. necator presented the highest PHA accumulation of the tested strains followed closely by B. cepacia, reaching their maxima at 48 h. Although BSG has been used as a source for other bioproducts, these results show the potential of this by-product as a no-cost raw material for producing PHAs in a waste valorization and circular economy scheme. es
dc.format application/pdf es
dc.format.extent 41 p. es
dc.language.iso eng es
dc.publisher Elsevier es
dc.rights Aquest document està subjecte a aquesta llicència Creative Commons es
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ca es
dc.subject.other Residus es
dc.subject.other Lignocel·lulosa es
dc.subject.other Hidrolitzat es
dc.subject.other Polihidroxialcanats es
dc.title Brewer’s spent grain as a no-cost substrate for polyhydroxyalkanoates production: assessment of pretreatment strategies and different bacterial strains es
dc.type info:eu-repo/semantics/article es
dc.embargo.terms 12 mesos es
dc.identifier.doi https://doi.org/10.1016/j.nbt.2021.01.009
dc.rights.accesRights info:eu-repo/semantics/embargoedAccess es
dc.type.version info:eu-repo/acceptedVersion es
dc.indexacio Indexat a WOS/JCR es
dc.indexacio Indexat a SCOPUS es

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