Research Progress on Bio-ethylene

doi:10.13560/j.cnki.biotech.bull.1985.2016.02.004

Abstract

Abstract: Ethylene is the chemical raw material of largest demand in the world, and is widely utilized for producing plastics, textiles and other chemical products.Currently, the most common method of producing ethylene is steam cracking of fossil oil；however, there exist drawbacks of high cost and non-friendly to environment, which bring the opportunity for the development of bio-ethylene.Bio-ethylene is produced from renewable resources of CO₂ and biomass , which contributes to saving resources and protecting environment.In this review, we introduce two pathways of bio-ethylene production—direct and indirect synthesis.Here we focus on the direct synthesis pathway of microorganisms via an ethylene forming enzyme(EFE), describing the structure, sequence and catalytic mechanism of EFE, illustrating several successful cases of engineered heterologous hosts synthetizing ethylene, presenting the strategies for improving yields, and prospecting the development of producing ethylene by microorganisms.

Key words: bio-ethylene, direct synthesis, microorganism, ethylene forming enzyme, heterologous expression

SUN Meng-ting, FAN Xiao-lei, GUO Rong-bo, QIU Yan-ling, ZHAO Xiao-xian. Research Progress on Bio-ethylene[J]. Biotechnology Bulletin, 2016, 32(2): 38-45.

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