Cellulosic bioethanol production from Jerusalem artichoke (Helianthus tuberosus L.) using hydrogen peroxide-acetic acid (HPAC) pretreatment.
Jerusalem artichoke (JA) is recognized as a suitable candidate biomass crop for bioethanol production because it has a rapid growth rate and high biomass productivity. In this study, hydrogen peroxide-acetic acid (HPAC) pretreatment was used to enhance the enzymatic hydrolysis and to effectively remove the lignin of JA. With optimized enzyme doses, synergy was observed from the combination of three different enzymes (RUT-C30, pectinase, and xylanase) which provided a conversion rate was approximately 30% higher than the rate with from treatment with RUT-C30 alone. Fermentation of the JA hydrolyzates by Saccharomyces cerevisiae produced a fermentation yield of approximately 84%. Therefore, Jerusalem artichoke has potential as a bioenergy crop for bioethanol production.
Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea.
Younho
Y
Song
Bio-energy Research Center, Chonnam National University, Gwangju 500-757, Republic of Korea.
Seung Gon
SG
Wi
Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea.
Ho Myeong
HM
Kim
Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 500-757, Republic of Korea; Bio-energy Research Center, Chonnam National University, Gwangju 500-757, Republic of Korea. Electronic address: baehj@chonnam.ac.kr.
Hyeun-Jong
HJ
Bae
D019342:Acetic Acid / Q000737:chemistry*; D056804:Biofuels; D000431:Ethanol / Q000378:metabolism*; D005285:Fermentation; D006368:Helianthus / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry; D011096:Polygalacturonase; D012441:Saccharomyces cerevisiae / Q000254:growth & development / Q000378:metabolism
D056804:Biofuels; D000431:Ethanol; D008031:Lignin; D006861:Hydrogen Peroxide; D011096:Polygalacturonase; D019342:Acetic Acid
Bioethanol production; Biomass feedstock; Enzyme optimization; Jerusalem artichoke; Pretreatment