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Production of Bio-ethanol from Agar using Saccharomyces cerevisiae  

Lee, Sung-Mok (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Yu, Byung Jo (Bio & Health Group, Emerging Center, Samsung Advanced Institute of Technology)
Kim, Young Min (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Choi, Soo-Jeong (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Ha, Jong-Myung (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Lee, Jae-Hwa (Department of Bioscience and Biotechnology, College of Engineering, Silla University)
Publication Information
Applied Chemistry for Engineering / v.20, no.3, 2009 , pp. 290-295 More about this Journal
Abstract
Red-algae agar, consisting of D-galactose and 3, 6-anhydro-L-galactose, is usable for bio-ethanol production if hydrolyzed to monomer unit. The objective of this study is to produce bio-ethanol from agar using the heat and acid-treatment. Bio-ethanol was produced by Saccharomyces cerevisiae KCCM1129 strains using agar-pretreatment. The optimal condition for reducing sugar conversion by agar was found to be 15 min reaction at a HCl concentration of 0.1 N and $120^{\circ}C$. The optimum concentration for maximum cell growth was 0.1 N NaCl (17.88 g/L). Over 0.1 N NaCl, the cell growth decreased to 6.78~10.76 g/L. At 16% agar concentration, the ethanol production obtained by optimum pretreatment was found to be 10.16 g/L.
Keywords
Saccharomyces cerevisiae; sea weed; bio-ethanol; agar; saccharification;
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