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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Investigating how biomass hydrolysis derivatives inhibit H-2 production by an isolated Clostridium beijerinckii

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Author(s):
Giraldeli, Lucas Diniz [1] ; Fonseca, Bruna Constante [1] ; Reginatto, Valeria [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, Av Bandeirantes 3900, Ribeirao Preto, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 44, n. 29, p. 14683-14693, JUN 7 2019.
Web of Science Citations: 1
Abstract

This study evaluates how fermentation inhibitors derived from biomass, namely 5-hydroxymethylfurfural (HMF), levulinic acid (LA), and formic acid (FA), affect H2 production by a Clostridium beijerinckii strain. The specific fermentative H2 production rate (mu H2), bacterial cell growth rate (mu), and substrate (glucose) consumption rate (mu S) during fermentation helped to estimate which HMF, LA, and FA concentrations inhibited 50% of the rates (IC50). IC50 for mu was 2.4, 2.7, and 1.4 g/L for HMF, LA, and FA, respectively. HMF inhibited H2 production the most potently and favored the lactate and ethanol pathways. Butyric acid was the only metabolite to be detected in the presence of LA or FA, which attested that these inhibitors completely inhibited the acetate pathway. The glucose consumption rate was the least affected by the inhibitors, and FA was more potent than HMF and LA. This information should be useful for more appropriate biomass feedstock application in fermentative H2 production. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 18/00789-7 - Obtaining fuels, products, and energy from agroindustrial waste in biological and bioelectrochemical systems: a contribution to bioeconomy.
Grantee:Valeria Reginatto Spiller
Support Opportunities: Regular Research Grants
FAPESP's process: 15/06074-1 - Third-generation biohydrogen production from algae biomass and its hydrolysis derivatives
Grantee:Valeria Reginatto Spiller
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants