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The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Environmentally-Friendly Pretreatment of Rice Straw by an Electron Beam Irradiation

전자선 조사를 이용한 볏짚의 친환경 전처리 공정

  • Lee, Byoung-Min (Research Division for Industry & Environment, Korea Atomic Energy Research Institute) ;
  • Lee, Jin-Young (Research Division for Industry & Environment, Korea Atomic Energy Research Institute) ;
  • Kim, Du-Yeong (Research Division for Industry & Environment, Korea Atomic Energy Research Institute) ;
  • Hong, Sung-Kwon (Department of Polymer Science and Engineering, Chungnam National University) ;
  • Kang, Phil-Hyun (Research Division for Industry & Environment, Korea Atomic Energy Research Institute) ;
  • Jeun, Joon-Pyo (Research Division for Industry & Environment, Korea Atomic Energy Research Institute)
  • 이병민 (한국원자력연구원 공업환경연구부) ;
  • 이진영 (한국원자력연구원 공업환경연구부) ;
  • 김두영 (한국원자력연구원 공업환경연구부) ;
  • 홍성권 (충남대학교 공과대학 고분자공학과) ;
  • 강필현 (한국원자력연구원 공업환경연구부) ;
  • 전준표 (한국원자력연구원 공업환경연구부)
  • Received : 2014.04.03
  • Accepted : 2014.08.18
  • Published : 2014.08.31
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Abstract

The autoclaving assisted by an irradiation pretreatment method was developed without toxic chemicals to produce fermentable sugars for their conversion to bioethanol. In the first step, electron beam irradiation (EBI) of rice straw was performed at various doses. The electron beam-irradiated rice straw was then autoclaved with DI water at $120^{\circ}C$ for 1 h. A total sugar yield of 81% was obtained from 300 kGy electron beam-irradiated rice straw after 72 h of enzymatic hydrolysis by Cellulase 1.5L (70 FPU/mL) and Novozyme-188 (40 CbU/mL). Also, the removal of hemicellulose and lignin was 32.0% and 32.5%, respectively. This result indicates that the environmentally-friendly pretreatment method of rice straw by an electron beam irradiation could be applied for bioethanol production in plant.

Keywords

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