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http://dx.doi.org/10.7841/ksbbj.2013.28.5.282

Bioethanol Production from Seaweed Gelidium amansii for Separated Hydrolysis and Fermentation (SHF)  

Ra, Chae Hun (Department of Biotechnology, Pukyong National University)
Lee, Hyeon Jun (Department of Biotechnology, Pukyong National University)
Shin, Myung Kyo (Biolsystems Co. Ltd.)
Kim, Sung-Koo (Department of Biotechnology, Pukyong National University)
Publication Information
KSBB Journal / v.28, no.5, 2013 , pp. 282-286 More about this Journal
Abstract
The seaweed, Gelidium amansii, was fermented to produce bioethanol. Optimal pretreatment condition was determined as 94 mM $H_2SO_4$ and 8% (w/v) seaweed slurry at $121^{\circ}C$ for 60 min. The mono sugars of 40.4 g/L with 67% of conversion from total carbohydrate of 60.6 g/L with 80 g dw/L G. amansii slurry were obtained by thermal acid hydrolysis pretreatment and enzymatic saccharification. G. amansii hydrolysate was used as the substrate for ethanol production by Kluyveromyces marxianus KCTC 7150 and Candida tropicalis KCTC 7212 using 5L fermentor. The ethanol productions by K. marxianus KCTC 7150 and C. tropicalis KCTC 7212 were 17.8 g/L with $Y_{EtOH}$ of 0.48 at 120 h and 19.3 g/L with $Y_{EtOH}$ of 0.50 at 120 h, respectively.
Keywords
Seaweed; Gelidium amansii; Pretreatment; Ethanol fermentation; SHF;
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