| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 봄 (04/23 ~ 04/24, 광주 김대중컨벤션센터) |
| 권호 |
15권 1호, p.375 |
| 발표분야 |
생물화공 |
| 제목 |
Lignin extraction from barley straw using ethanosolv pretreatment |
| 초록 |
Lignocellulose represents a key sustainable source of biomass for transformation into biofuels. Unfortunately, lignocellulosic biomass is highly recalcitrant to biotransformation which limits its use and prevents. The vast majority of lignocellulosic pretreatment strategies have focused on achieving a reduction in biomass lignin content and at the same time attempting to achieve a reduction in cellulose crystallinity. In this work, an ethanosolv pretreatment has been evaluated for extracting lignin from barley straw. In order to determine crystallinity, pretreated barley straw were analyzed by X-ray diffraction. 75% ethanol was usedas a pretreatment solvent to extract lignin from barley straw. The influence on delignification of three independent variables are temperature, time, catalyst(1M H2SO4) dose. The best pretreatment condition observed were180℃, 120min, 0.196% H2SO4 resulting in delignification of 38%. The cellulose in the pretreated barley straw becomes far less crystalline without undergoing ethanosolv. X-ray diffraction results indicated that these physical changes enhance the enzymatic digestibility in the ehanosolv treated barley straw. |
| 저자 |
김영란1, 유안나1, 민지호1, 정봉우1, 한민희2, 최기욱2
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| 소속 |
1전북대, 2(주)창해에탄올 |
| 키워드 |
lignin; bioethanol; lignocellulose; barley straw; organosolv; cellulose crystallinity; delignification
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| E-Mail |
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| 원문파일 |
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