Evidence of mixotrophic carbon-capture by n-butanol-producer Clostridium beijerinckii.

ABSTRACT: Recent efforts to combat increasing greenhouse gas emissions include their capture into advanced biofuels, such as butanol. Traditionally, biobutanol research has been centered solely on its generation from sugars. Our results show partial re-assimilation of CO₂ and H₂ by n-butanol-producer C. beijerinckii. This was detected as synchronous CO₂/H₂ oscillations by direct (real-time) monitoring of their fermentation gasses. Additional functional analysis demonstrated increased total carbon recovery above heterotrophic values associated to mixotrophic assimilation of synthesis gas (H₂, CO₂ and CO). This was further confirmed using ¹³C-Tracer experiments feeding ¹³CO₂ and measuring the resulting l

SUBMITTER: Sandoval-Espinola WJ 

PROVIDER: S-EPMC5630571 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature