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- Title
Enhanced ethanol production by fermentation of Gelidium amansii hydrolysate using a detoxification process and yeasts acclimated to high-salt concentration.
- Authors
Ra, Chae; Jung, Jang; Sunwoo, In; Jeong, Gwi-Taek; Kim, Sung-Koo
- Abstract
A total monosaccharide concentration of 59.0 g/L, representing 80.1 % conversion of 73.6 g/L total fermentable sugars from 160 g dw/L G. amansii slurry was obtained by thermal acid hydrolysis and enzymatic hydrolysis. Subsequent adsorption treatment using 5 % activated carbon with an adsorption time of 2 min was used to prevent the inhibitory effect of 5-hydroxymethylfurfural (HMF) >5 g/L in the medium. Ethanol production decreased with increasing salt concentration using C. tropicalis KCTC 7212 non-acclimated or acclimated to a high concentration of salt. Salt concentration of 90 psu was the maximum concentration for cell growth and ethanol production. The levels of ethanol production by C. tropicalis non-acclimated or acclimated to 90 psu high-salt concentration were 13.8 g/L with a yield (Y) of 0.23, and 26.7 g/L with Y of 0.45, respectively.
- Subjects
ETHANOL as fuel; RED algae; FERMENTATION; MONOSACCHARIDES; HYDROLYSIS; HYDROXYMETHYLFURFURAL
- Publication
Bioprocess & Biosystems Engineering, 2015, Vol 38, Issue 6, p1201
- ISSN
1615-7591
- Publication type
Article
- DOI
10.1007/s00449-015-1362-2