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Evaluation of whole Jerusalem artichoke (Helianthus tuberosus L.) for consolidated bioprocessing ethanol production

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  • Kim, Seonghun
  • Kim, Chul Ho

Abstract

For consolidated bioprocessing (CBP), components of Jerusalem artichoke (Helianthus tuberosus L.) tubers and stalks as a potential bioenergy crop were analyzed as carbon and nutrient sources, respectively. The effectiveness of chemical pretreatment with dilute acid or alkali was evaluated to develop a CBP method. Cellulose content, delignification, and enzymatic hydrolysis efficiency of the pretreated stalks were increased more effectively by NaOH treatment than dilute H2SO4 treatment. However, weight loss was greater during alkali pretreatment. Additionally, large volumes of water were required to wash the alkali-treated biomass. Therefore, CBP using the dilute acid-pretreated stalk and the ground tuber of Kluyveromyces marxianus were investigated. Fermentation of both pretreated stalks and tubers by K. marxianus with no nutrient supplementation proceeded acceptably. At 10% (w/v) stalk and 8% (w/v) tuber loading, K. marxianus produced 45.3 g/L ethanol after 30 h. The ethanol yield was 0.252 g ethanol per g dry biomass, or 0.32 g ethanol per g fermentable sugars, with a fermentable sugar conversion rate of 60%. These results suggest a cost-effective CBP strategy for bioethanol production from the whole Jerusalem artichoke plant.

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  • Kim, Seonghun & Kim, Chul Ho, 2014. "Evaluation of whole Jerusalem artichoke (Helianthus tuberosus L.) for consolidated bioprocessing ethanol production," Renewable Energy, Elsevier, vol. 65(C), pages 83-91.
    • Handle: RePEc:eee:renene:v:65:y:2014:i:c:p:83-91
    DOI: 10.1016/j.renene.2013.07.025
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    References listed on IDEAS

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    1. Kim, Seonghun & Kim, Chul Ho, 2013. "Bioethanol production using the sequential acid/alkali-pretreated empty palm fruit bunch fiber," Renewable Energy, Elsevier, vol. 54(C), pages 150-155.
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    1. Urszula Dziekońska-Kubczak & Joanna Berłowska & Piotr Dziugan & Piotr Patelski & Katarzyna Pielech-Przybylska & Maria Balcerek, 2018. "Nitric Acid Pretreatment of Jerusalem Artichoke Stalks for Enzymatic Saccharification and Bioethanol Production," Energies, MDPI, vol. 11(8), pages 1-17, August.
    2. Mishra, Archana & Ghosh, Sanjoy, 2020. "Saccharification of kans grass biomass by a novel fractional hydrolysis method followed by co-culture fermentation for bioethanol production," Renewable Energy, Elsevier, vol. 146(C), pages 750-759.
    3. Gupta, Anubhuti & Verma, Jay Prakash, 2015. "Sustainable bio-ethanol production from agro-residues: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 41(C), pages 550-567.
    4. Mariana Abreu & Luís Silva & Belina Ribeiro & Alice Ferreira & Luís Alves & Susana M. Paixão & Luísa Gouveia & Patrícia Moura & Florbela Carvalheiro & Luís C. Duarte & Ana Luisa Fernando & Alberto Rei, 2022. "Low Indirect Land Use Change (ILUC) Energy Crops to Bioenergy and Biofuels—A Review," Energies, MDPI, vol. 15(12), pages 1-68, June.
    5. Kim, Seonghun & Kim, Sang-Dae & Sohn, Seok Young, 2020. "Evaluation of the wastewater generated during alkaline pretreatment of biomass for feasibility of recycling and reusing," Renewable Energy, Elsevier, vol. 155(C), pages 1156-1164.

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