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Evaluation of Pre-treatments of Brewery’s Spent Grain for Growing Bacteria in the Production of Polyhydroxyalkanoates

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dc.contributor Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA
dc.contributor.author Mendez, Daniel A.
dc.contributor.author Marti Serrano, Elisabet
dc.contributor.author Puyuelo Sánchez, Belén
dc.contributor.author Colón Jordà, Joan
dc.contributor.author Ponsá Salas, Sergio
dc.date.accessioned 2021-02-17T12:50:55Z
dc.date.available 2021-02-17T12:50:55Z
dc.date.created 2018
dc.date.issued 2018
dc.identifier.citation Mendez, D. A., Marti, E., Puyuelo, B., Colon, J., & Ponsa, S. (2018). Evaluation of pre-treatments of brewery’s spent grain for growing bacteria in the production of polyhydroxyalkanoates. Chemical Engineering Transactions, 65, 403-408. doi:10.3303/CET1865068 es
dc.identifier.issn 2283-9216
dc.identifier.uri http://hdl.handle.net/10854/6546
dc.description.abstract A suitable solution to solve the problems related to the conventional plastics is their replacement by biodegradable materials with similar properties such as polyhydroxyalkanoates (PHAs). PHAs can be produced by microorganisms using abundant low-cost substrates such as brewery’s spent grain (BSG). In this work, different pre-treatments were tested on BSG to improve the growth and production of biomass using three different strains highly recognized for their ability to produce PHA. A solid-state fermentation (SSF) was carried out to evaluate PHA production. An evaluation of biomass growth kinetics of the three selected bacteria was made after different hydrolytic pre-treatments of BSG. Results showed that bacteria did not grow in control BSG and the pre-treatments were necessary to release the principal substrate metabolised by bacteria. The best result was obtained with alkali pre-treatment although microwave pre-treatment showed good results too. The strains P. putida and C. necator showed productions of 1.95 and 1.45 mg biomass/g BSG and viable cell counts of 1.5 E+16 and 1.3 E+08 CFU/g BSG after 72 hours of SSF, respectively. On the other hand, Bacillus cereus was not able to grow in the pre-treated substrates. BSG is a promising substrate for bacterial growth and PHA production for its nutrient content. es
dc.description.sponsorship This study was supported by the VALORA project (CTM2016-81038-R) from the Spanish Ministry of Economy and Competitiveness. D. A. Mendez acknowledges a fellowship gave by “Proyecto de formación de talento humano de alto nivel - Tolima“ from Universidad del Tolima
dc.format application/pdf es
dc.format.extent 6 p. es
dc.language.iso eng es
dc.publisher AIDIC es
dc.rights Tots els drets reservats es
dc.rights (c) AIDIC
dc.subject.other Cereals es
dc.subject.other Bacteris es
dc.subject.other Polihidroxialcanoats es
dc.subject.other Cervesa -- Fabricació es
dc.title Evaluation of Pre-treatments of Brewery’s Spent Grain for Growing Bacteria in the Production of Polyhydroxyalkanoates es
dc.type info:eu-repo/semantics/article es
dc.identifier.doi https://doi.org/10.3303/CET1865068
dc.rights.accesRights info:eu-repo/semantics/openAccess es
dc.type.version info:eu-repo/publishedVersion es
dc.indexacio Indexat a SCOPUS es

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