Sustainable production of polyhydroxybutyrate from autotrophs using CO2 as feedstock: Challenges and opportunities

Ranjna Sirohi, Jeong Seop Lee, Byung Sun Yu, Hyejin Roh, Sang Jun Sim

Research output: Contribution to journalReview articlepeer-review

15 Citations (Scopus)

Abstract

Due to industrialization and rapid increase in world population, the global energy consumption has increased dramatically. As a consequence, there is increased consumption of fossil fuels, leading to a rapid increase in CO2 concentration in the atmosphere. This accumulated CO2 can be efficiently used by autotrophs as a carbon source to produce chemicals and biopolymers. There has been increasing attention on the production of polyhydroxybutyrate (PHB), a biopolymer, with focus on reducing the production cost. For this, cheaper renewable feedstocks, molecular tools, including metabolic and genetic engineering have been explored to improve microbial strains along with process engineering aspects for scale-up of PHB production. This review discusses the recent advents on the utilization of CO2 as feedstock especially by engineered autotrophs, for sustainable production of PHB. The review also discusses the innovations in cultivation technology and process monitoring while understanding the underlying mechanisms for CO2 to biopolymer conversion.

Original languageEnglish
Article number125751
JournalBioresource technology
Volume341
DOIs
Publication statusPublished - 2021 Dec

Keywords

  • Autotrophs
  • Cyanobacteria
  • Metabolic engineering
  • Microalgae
  • Polyhydroxybutyrate

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

Fingerprint

Dive into the research topics of 'Sustainable production of polyhydroxybutyrate from autotrophs using CO2 as feedstock: Challenges and opportunities'. Together they form a unique fingerprint.

Cite this