title: Enhanced ethanol production by fermentation of Gelidium amansii hydrolysate using a detoxification process and yeasts acclimated to high-salt concentration.
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 (YEtOH) of 0.23, and 26.7 g/L with YEtOH of 0.45, respectively.
authors: Department of Biotechnology, Pukyong National University, Busan, 608-737, Korea.
authors: Chae Hun
authors: CH
authors: Ra
authors: Jang Hyun
authors: JH
authors: Jung
authors: In Yung
authors: IY
authors: Sunwoo
authors: Gwi-Taek
authors: GT
authors: Jeong
authors: Sung-Koo
authors: SK
authors: Kim
mesh_terms: D000222:Adaptation, Physiological; D041022:Candida tropicalis / Q000378:metabolism* / Q000502:physiology; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D006868:Hydrolysis; D000461:Rhodophyta / Q000378:metabolism*; D012965:Sodium Chloride
chemical_list: D000431:Ethanol; D012965:Sodium Chloride