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Butyric acid production from red algae by a newly isolated Clostridium sp. S1.
- Source :
- Biotechnology Letters; Sep2015, Vol. 37 Issue 9, p1837-1844, 8p
- Publication Year :
- 2015
-
Abstract
- Objective: 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. Results: 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. Conclusion: 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01415492
- Volume :
- 37
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Biotechnology Letters
- Publication Type :
- Academic Journal
- Accession number :
- 109136844
- Full Text :
- https://doi.org/10.1007/s10529-015-1869-2