title: [Comparison of microorganisms fermenting syngas into ethanol].
abstract: To evaluate the ability of microbial mix-culture fermenting syngas into ethanol, we studied the microbial mix-cultures A-fm 4, G-fm 4, Lp-fm 4 and B-fm 4 obtained by enrichment and compared with Clostridium autoethanogenum DSM10061 with 10% and 25% inoculation size. The results show that, with 10% inoculation size, the ethanol production of A-fm 4, G-fm 4, Lp-fm 4, B-fm 4 and C. autoethanogenum were 349.15, 232.16, 104.25, 79.90 and 26.99 mg/L respectively. With 25% inoculation size, the ethanol production were 485.81, 472.73, 348.58, 272.52 and 242.15 mg/L respectively. Higher inoculation size will increase the production of ethanol. The tested mix-culture exhibited a significant yield advantage compared with the maximum production of C. autoethanogenum reported in the literature (259.64 mg/L). This research provided a practical method to improve ethanol production from syngas.
authors.affiliation: College of Life Sciences, Henan Agricultural University, Zhengzhou 450002, Henan, China. song1666@126.com
authors.forename: Andong
authors.initials: A
authors.lastname: Song
authors.forename: Xinjun
authors.initials: X
authors.lastname: Feng
authors.forename: Fengqin
authors.initials: F
authors.lastname: Wang
authors.forename: Hui
authors.initials: H
authors.lastname: Xie
authors.forename: Dajiao
authors.initials: D
authors.lastname: Yang
mesh_terms: D001419:Bacteria / Q000145:classification / Q000378:metabolism*; D046969:Clostridium acetobutylicum / Q000378:metabolism; D000431:Ethanol / Q000302:isolation & purification / Q000378:metabolism*; D005285:Fermentation; D005740:Gases / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism
chemical_list: D005740:Gases; D000431:Ethanol; D006859:Hydrogen