Ethanol production from lignocellulosic biomass by recombinant Escherichia coli strain FBR5

Bioengineered. 2012 Jul-Aug;3(4):197-202. doi: 10.4161/bioe.19874. Epub 2012 Jun 18.

Abstract

Lignocellulosic biomass, upon pretreatment and enzymatic hydrolysis, generates a mixture of hexose and pentose sugars such as glucose, xylose, arabinose and galactose. While Escherichia coli utilizes all these sugars it lacks the ability to produce ethanol from them. Recombinant ethanologenic E. coli strains have been created with a goal to produce ethanol from both hexose and pentose sugars. Herein, we review the current state of the art on the production of ethanol from lignocellulosic hydrolyzates by an ethanologenic recombinant E. coli strain (FBR5). The bacterium is stable without antibiotics and can tolerate ethanol up to 50 gL(-1). It produces up to 45 g ethanol per L and has the potential to be used for industrial production of ethanol from lignocellulosic hydrolyzates.

Publication types

  • Review

MeSH terms

  • Alcohol Dehydrogenase / genetics*
  • Alcohol Dehydrogenase / metabolism
  • Arabinose / metabolism
  • Bacterial Proteins / genetics*
  • Bacterial Proteins / metabolism
  • Biomass
  • Bioreactors
  • Escherichia coli / genetics*
  • Escherichia coli / metabolism
  • Ethanol / metabolism*
  • Fermentation
  • Galactose / metabolism
  • Glucose / metabolism
  • Hydrolysis
  • Lignin / metabolism*
  • Metabolic Engineering
  • Mutation
  • Pyruvate Decarboxylase / genetics*
  • Pyruvate Decarboxylase / metabolism
  • Xylose / metabolism
  • Zymomonas / chemistry

Substances

  • Bacterial Proteins
  • lignocellulose
  • Ethanol
  • Lignin
  • Xylose
  • Arabinose
  • Alcohol Dehydrogenase
  • Pyruvate Decarboxylase
  • Glucose
  • Galactose