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Please use this identifier to cite or link to this item: http://uvadoc.uva.es/handle/10324/35160
Title: Multi-production of high added market value metabolites from diluted methane emissions via methanotrophic extremophiles
Authors: Cantera Ruiz de Pellón, Sara
Sánchez Andrea, I.
Lebrero Fernández, Raquel
García Encina, Pedro
Stamsb, Alfons J.M.
Muñoz Torre, Raúl
Issue Date: 2018
Publisher: Elsevier
Description: Producción Científica
Citation: Bioresource Technology, 2018, Volume 267, Pages 401-407
Abstract: This study constitutes the first-proof-of-concept of a methane biorefinery based on the multi-production of high profit margin substances (ectoine, hydroxyectoine, polyhydroxyalkanoates (PHAs) and exopolysaccharides (EPS)) using methane as the sole carbon and energy source. Two bubble column bioreactors were operated under different magnesium concentrations (0.2, 0.02 and 0.002 g L−1) to validate and optimize this innovative strategy for valorization of CH4 emissions. High Mg2+ concentrations promoted the accumulation of ectoine (79.7–94.2 mg g biomass−1), together with high hydroxyectoine yields (up to 13 mg g biomass−1) and EPS concentrations (up to 2.6 g L culture broth−1). Unfortunately, PHA synthesis was almost negligible (14.3 mg L−1) and only found at the lowest Mg2+ concentration tested. Halomonas, Marinobacter, Methylophaga and Methylomicrobium, previously described as ectoine producers, were dominant in both bioreactors, Methylomicrobium being the only described methanotroph. This study encourages further research on CH4 biorefineries capable of creating value out of GHG mitigation.
Classification: Biorefinería CH4
CH4-biorefinery
Metano
Methane
ISSN: 0960-8524
Peer Review: NO
DOI: https://doi.org/10.1016/j.biortech.2018.07.057
Sponsor: Ministerio de Economía, Industria y Competitividad (Project CTM2015-70442-RNOVEDAR)
Junta de Castilla y León (programa de apoyo a proyectos de investigación – Ref. E-47-2014-0140696UIC71)
Publisher Version: https://www.sciencedirect.com/science/article/pii/S0960852418309544
Language: eng
URI: http://uvadoc.uva.es/handle/10324/35160
Rights: info:eu-repo/semantics/openAccess
Appears in Collections:GTA - Artículos de revista
DEP48 - Artículos de revista

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