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KMID : 0545120110210010109
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Journal of Microbiology and Biotechnology
2011 Volume.21 No. 1 p.109 ~ p.114
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Bioethanol Production from the Hydrolysate of Rape Stem in a Surface-Aerated Fermentor
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Yeon Ji-Hyeon
Lee Sang-Eun
Choi Woon-Yong
Choi Won-Seok
Kim Il-Chul
Lee Hyeon-Yong
Jung Kyung-Hwan
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Abstract
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In this study, we investigated the feasibility of producing bioethanol from the hydrolysate of rape stem. Specifically, the most ideal yeast strain was screened, and the microaeration was performed by surface aeration on a liquid medium surface. Among the yeast strains examined, Pichia stipitis CBS 7126 displayed the best performance in bioethanol production during the surface-aerated fermentor culture. Pichia stipitis CBS 7126 produced maximally 9.56 g/l of bioethanol from the initial total reducing sugars (about 28 g/l). The bioethanol yield was 0.397 (by the DNS method). Furthermore, this controlled surface aeration method holds promise for use in the bioethanol production from the xylose-containing lignocellulosic hydrolysate of biomass.
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KEYWORD
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surface aeration, hydrolysate of rape stem, bioethanol, Pichia stipitis
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