Earticle

초록

영어

Lignocellulosic biomass is one of the most potential candidates for biogas and bioethanol production. Since structural features, such as high lignin content, crystallinity, and acetyl content make lignocelluloses recalcitrant to enzymatic degradation, its pretreatment is a key process. Pleurotus ostreatus, one of the white-rot fungi, was selected for biological pretreatment because it can modify the structural features for the better enzymatic digestibility with a capacity to remove lignin from lignocelluloses. The selective lignin-degrading ability of Pleurotus ostreatus comes from the ligninase system which is mainly composed of lignin peroxidase (LiP), manganese peroxidase (MnP), and laccase. Nitrogen or carbon limitation induces lignin biodegradation and ligninase production, whereas carbon and nitrogen limitation also cause a loss of mycelia dry weight and low production of extracellular proteins including enzymes. To obtain maximal protein production without carbon catabolite repression, the optimized carbon and nitrogen supplies should be considered. Using the central composite design (CCD) with interactive variables of glucose (as C source) and ammonium sulfate (as N source), the optimization of C/N ratio for the biological pretreatment by Pleurotus ostreatus was investigated in this study.

키워드

저자

• Sun-ung HEO [ Department of Biological Engineering, Inha University. ]
• Ki-seok YOON [ Department of Biological Engineering, Inha University. ]
• Young-jun KIM [ ERC for Advanced Bioseparation Technology, Inha University, Incheon 402-751, Korea. ]
• Yoon-mo KOO [ ERC for Advanced Bioseparation Technology, Inha University, Incheon 402-751, Korea. ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국생물공학회 학술대회

• 간기

  반년간

• 수록기간

  1985~2013

• 십진분류

  KDC 476 DDC 576