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Extreme furfural tolerance of a soil bacterium Enterobacter cloacae GGT036

Authors
Choi, Sun YoungGong, GyeongtaekPark, Hong-SilUm, YoungsoonSim, Sang JunWoo, Han Min
Issue Date
10-1월-2015
Publisher
ELSEVIER SCIENCE BV
Keywords
Enterobacter cloacae; Furfural tolerance; IC50; Detoxification
Citation
JOURNAL OF BIOTECHNOLOGY, v.193, pp.11 - 13
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF BIOTECHNOLOGY
Volume
193
Start Page
11
End Page
13
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/94651
DOI
10.1016/j.jbiotec.2014.11.001
ISSN
0168-1656
Abstract
Detoxification process of cellular inhibitors including furfural is essential for production of bio-based chemicals from lignocellulosic biomass. Here we isolated an extreme furfural-tolerant bacterium Enterobacter cloacae GGT036 from soil sample collected in Mt. Gwanak, Republic of Korea. Among isolated bacteria, only E. cloacae GGT036 showed cell growth with 35 mM furfural under aerobic culture. Compared to the maximal half inhibitory concentration (IC50) of well-known industrial strains Escherichia coli (24.9 mM furfural) and Corynebacterium glutamicum (10 mM furfural) based on the cell density, IC50 of E. cloacae GGT036 (47.7 mM) was significantly higher after 24 h, compared to E. coli and C. glutamicum. Since bacterial cell growth was exponentially inhibited depending on linearly increased furfural concentrations in the medium, we concluded that E. cloacae GGT036 is an extreme furfural-tolerant bacterium. Recently, the complete genome sequence of E. cloacae GGT036 was announced and this could provide an insight for engineering of E. cloacae GGT036 itself or other industrially relevant bacteria. (C) 2014 Elsevier B.V. All rights reserved.
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공과대학 (화공생명공학과)
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