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Bioethanol production from the waste product of salted Undaria pinnatifida using laboratory and pilot development unit (PDU) scale fermenters

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Abstract

The waste product from salted Undaria pinnatifida (sea mustard) processing was fermented to produce bioethanol by Saccharomyces cerevisiae KCCM 1129 at laboratory and pilot development unit (PDU) scales. Thermal acidic hydrolysis of salted U. pinnatifida was conducted with 75 mM H2SO4 at 121℃ for 60 min and the addition of 1.4 KNU/mL Termamyl 120L. A total monosaccharide concentration of 19.3 g/L and 32.2% conversion from 59.9 g/L total carbohydrate using 130 g dw/L salted U. pinnatifida were achieved. Ethanol fermentations in 5 and 500 L fermenters were carried out to produce 8.5 g/L of ethanol with an ethanol yield (YEtOH) of 0.44 at 24 h and 7.9 g/L with YEtOH of 0.41 at 18 h, respectively. The fermentation time of the PDU-scale reaction was reduced due to differences in the impeller type and geometry of the fermenters.

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Authors and Affiliations

  1. Department of Biotechnology, Pukyong National University, Busan, 608-737, Korea

    Chae Hun Ra, Chang-Han Kang, Gwi-Taek Jeong & Sung-Koo Kim

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  1. Chae Hun Ra
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  2. Chang-Han Kang
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  3. Gwi-Taek Jeong
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  4. Sung-Koo Kim
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Correspondence to Sung-Koo Kim.

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Ra, C.H., Kang, CH., Jeong, GT. et al. Bioethanol production from the waste product of salted Undaria pinnatifida using laboratory and pilot development unit (PDU) scale fermenters. Biotechnol Bioproc E 19, 984–988 (2014). https://doi.org/10.1007/s12257-014-0179-1

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  • DOI: https://doi.org/10.1007/s12257-014-0179-1

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