Earticle

초록

영어

Rice straw is a lignocellulosic biomass that is a renewable organic substance and alternative source of energy. For the first time, rice straw was pretreated in a novel manner using hypochlorite-hydrogen peroxide (Ox-B) solution. The optimum pretreatment condition was analyzed by response surface methodology and the pretreated rice straw was hydrolyzed using two kinds of enzymes: Cellulase and Spezyme. Following hydrolysis, Saccharomyces cerevisiae and Pichia stipitis were inoculated for ethanol production. The optimum condition was 60 min pretreatment using 5% Ox-B solution (consisting of 10 ml hypochlorite and 50 ml hydrogen
peroxide). The Ox-B solution treatment was an essential step for efficient hemicelluloase hydrolysis. Under these conditions, 406.8 mg glucose and 224.0 mg xylose were obtained from 1g rice straw. The structural change of rice straw after pretreatment and enzyme hydrolysis was examined by scannin gel ectron microscopy. With the 5% initial sugar concentration, the final ethanol concentration was about 1.67%, which is 87.3% of stoichiometric and fermentation efficiency yield.

키워드

저자

• Ghahyun KIM [ UC San Diego, La Jolla, 92093, USA. ]
• Nahyun KIM [ Korean Minjok Leadership Academy ]
• Hyun-Chul CHOI [ Interdisciplinary Program of Graduate School for Bioenergy and Biomaterials, Chonnam National University ]
• Hee-Kyoung KANG [ The Research Institute for Catalysis and School of Biological Sciences and Technology, Chonnam National University ]
• Jongho KIM [ 4The Research Institute for Catalysis and School of Applied Chemical Engineering, Chonnam National University ]
• Doman KIM [ The Research Institute for Catalysis and School of Biological Sciences and technology, Chonnam National University, ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576