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KMID : 0380020110260040317
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Korean Journal of Biotechnology and Bioengineering
2011 Volume.26 No. 4 p.317 ~ p.322
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Bioethanol Production from Seaweed Ulva pertusa for Environmental Application
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Kim Jong-Deog
Yoon Yang-Ho
Shin Tai-Sun
Kim Min-Yong
Byun Hyun-Soo
Oh Seok-Jin
Seo Hyo-Jin
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Abstract
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Ulva pertusa is one of the worst pollutant like a waste vinyl after agriculture and caused bad smell at seashore in Jejudo and south area of korean peninsular. For favorable environmental utilization of Ulva pertusa, it could be applied for ethanol production with its acid hydrolysate. The components of hydrolysate included fermentable sugar of glucose, xylose, mannose, galactose, and higher amounts of unfermentable rhamnose. Fermentable sugars were converted to ethanol with S. cerevisiae, also xylose to ethanol with P. stipitis, their maximun ethanol production at optimum conditions were 462 μg//mL and 475 μg/mL, respectively. While, rhamnose cannot be changed to ethanol with S. cerevisiae or P. stipitis, alone. Combination of S. cerevisiae and P. stipitis can convert rhamnose to ethanol, because P.stipitis degradaded rhamnose to pyruvate, and then S. cerevisiae convert to ethanol, at optimum conditions, ethanol reached to 782 μg/mL (30.24%) that is higher than that of 2 strain alone from 500 mg of dried Ulva pertusa contained 2586.45 μg/mL of reduced sugars. Ulva pertusa can be utilized for renewal energy insted of environmenatal enemy.
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KEYWORD
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Ulva pertusa, Seashore waste, H2SO4, Rhamnose, S. cerevisiae, P. stipitis, Combined strain, Ethanol
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