Butyric acid production from red algae by a newly isolated Clostridium sp. S1

Title
Butyric acid production from red algae by a newly isolated Clostridium sp. S1
Author
상병인
Keywords
Biofuel; Butyric acid fermentation; Clostridium; Galactose; Gelidium amansii; Red algae hydrolysate
Issue Date
2015-05
Publisher
SPRINGER
Citation
BIOTECHNOLOGY LETTERS, v. 37, NO 9, Page. 1837-1844
Abstract
To produce butyric acid from red algae such as Gelidium amansii in which galactose is a main carbohydrate, microorganisms utilizing galactose and tolerating inhibitors in hydrolysis including levulinic acid and 5-hydroxymethylfurfural (HMF) are required. A newly isolated bacterium, Clostridium sp. S1 produced butyric acid not only from galactose as the sole carbon source but also from a mixture of galactose and glucose through simultaneous utilization. Notably, Clostridium sp. S1 produced butyric acid and a small amount of acetic acid with the butyrate:acetate ratio of 45.4:1 and it even converted acetate to butyric acid. Clostridium sp. S1 tolerated 0.5-2 g levulinic acid/l and recovered from HMF inhibition at 0.6-2.5 g/l, resulting in 85-92 % butyric acid concentration of the control culture. When acid-pretreated G. amansii hydrolysate was used, Clostridium sp. S1 produced 4.83 g butyric acid/l from 10 g galactose/l and 1 g glucose/l. Clostridium sp. S1 produces butyric acid from red algae due to its characteristics in sugar utilization and tolerance to inhibitors, demonstrating its advantage as a red algae-utilizing microorganism.
URI
http://link.springer.com/article/10.1007%2Fs10529-015-1869-2http://hdl.handle.net/20.500.11754/24365
ISSN
0141-5492; 1573-6776
DOI
10.1007/s10529-015-1869-2
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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