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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2008.10
- 수록면
- 990 - 995 (6page)
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A thermostable α-L-arabinofuranosidases (α-L-AFase) is an industrially important enzyme for recovery of L-arabinose from hemicellulose. The recombinant α-L-AFase from Thermotoga maritima was expressed in Escherichia coli by using a constitutive pHCE or an inducible pRSET vectors. In batch fermentation, the constitutive expression system resulted in slightly faster growth rate (0.78 vs. 0.74/hr) but lower enzyme activity (2,553 vs. 3,723 units/L) than those of the induction system. When fed-batch fermentation was performed, biomass and enzyme activity reached the highest levels of 36 g/L and 9,152 units/L, respectively. The fed batch cultures performed superior results than batch culture in terms of biomass yield (4.62-5.42 folds) and enzyme synthesis (3.39-4.00 folds). In addition, the fed-batch induction strategy at high cell density resulted in the best productivity in cell growth as well as enzyme activity rather than the induction method at low cell density or the constitutive expression.
목차
Abstract
Introduction
Materials and Methods
Results and Discussion
Acknowledgment
References
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UCI(KEPA) : I410-ECN-0101-2013-573-001007659