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KMID : 1094720220270060890
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Biotechnology and Bioprocess Engineering
2022 Volume.27 No. 6 p.890 ~ p.899
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Acetate-rich Cellulosic Hydrolysates and Their Bioconversion Using Yeasts
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Lee Ye-Gi
Ju Ye-Bin
Liang Sun
Park Su-Jeong
Jin Yong-Su
Kim Soo-Rin
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Abstract
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Numerous technological advances have been made in the depolymerization and fermentation of lignocellulosic biomass. Nevertheless, economic feasibility is still a major concern for the bioconversion of lignocellulose into value-added products. Acetate?the most abundant carbon source after the sugars in cellulosic hydrolysates?has been considered a fermentation inhibitor, but it can also be a good substrate in industrial biotechnological processes. Co-consumption of acetate and cellulosic sugars by yeasts will improve the economic feasibility of any bioconversion processes using cellulosic hydrolysates. This study investigates state-of-the-art technologies for the utilization of the hemicellulose fractions of lignocellulosic biomass, rich in acetate and xylose. Furthermore, the potentials of acetate- and xylose-rich hydrolysates will be highlighted in diversifying the product profiles for lignocellulosic bioprocesses from bioethanol to drop-in fuels and other value-added chemicals.
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KEYWORD
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acetate-rich lignocellulosic biomass, yeast, acetate metabolism, Saccharomyces cerevisiae, xylose fermentation
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