Development of a high temperature microbial fermentation process for butanol

Jeor, Jeffery D. St.¹  Reed, David W.¹  Daubaras, Dayna L.¹  Thompson, Vicki S.¹ 

[1] Idaho National Lab. (INL), Idaho Falls, ID (United States)

关键词: Butanol;    Fermentation;    Geobacillus caldoxylosiliticus;    High Temperature;   

DOI  :  10.2172/1260879
RP-ID  :  INL/EXT--15-35964
PID  :  OSTI ID: 1260879

学科分类：生物科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Transforming renewable biomass into cost-competitive high-performance biofuels and bioproducts is key to the U.S. future energy and chemical needs. Butanol production by microbial fermentation for chemical conversion to polyolefins, elastomers, drop-in jet or diesel fuel, and other chemicals is a promising solution. A high temperature fermentation process could decrease energy costs, capital cost, give higher butanol production, and allow for continuous fermentation. In this paper, we describe our approach to genetically transform Geobacillus caldoxylosiliticus, using a pUCG18 plasmid, for potential insertion of a butanol production pathway. Transformation methods tested were electroporation of electrocompetent cells, ternary conjugation with E. coli donor and helper strains, and protoplast fusion. These methods have not been successful using the current plasmid. Growth controls show cells survive the various methods tested, suggesting the possibility of transformation inhibition from a DNA restriction modification system in G. caldoxylosiliticus, as reported in the literature.