Efficient utilization of Eucheuma denticulatum hydrolysates using an activated carbon adsorption process for ethanol production in a 5-L fermentor
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- 作者：Chae Hun Ra ; Min Ji Kim ; Gwi-Taek Jeong…
- 关键词：Eucheuma denticulatum ; Activated carbon ; Adsorption isotherm ; Scheffersomyces stipitis KCTC 7228 ; Ethanol fermentation
- 刊名：Bioprocess and Biosystems Engineering
- 出版年：2017
- 出版时间：March 2017
- 年：2017
- 卷：40
- 期：3
- 页码：373-381
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Biotechnology; Industrial and Production Engineering; Environmental Engineering/Biotechnology; Industrial Chemistry/Chemical Engineering; Food Science;
- 出版者：Springer Berlin Heidelberg
- ISSN：1615-7605
- 卷排序：40
文摘
A total monosaccharide concentration of 37.8 g/L and 85.9% conversion from total fermentable monosaccharides of 44.0 g/L from 110 g dw/L Eucheuma denticulatum slurry were obtained by thermal acid hydrolysis and enzymatic saccharification. Subsequent adsorption treatment to remove 5-hydroxymethylfurfural (5-HMF) using 5% activated carbon and an adsorption time of 10 min were used to prevent a prolonged lag phase, reduced cell growth, and low ethanol production. The equilibrium adsorption capacity (qe) of HMF (58.183 mg/g) showed high affinity to activated carbon comparing to those of galactose (2.466 mg/g) and glucose (2.474 mg/g). The efficiency of cell growth and ethanol production with activated carbon treatment was higher than that without activated carbon treatment. Fermentation using S. stipitis KCTC7228 produced a cell concentration of 3.58 g dw/L with YX/S of 0.107, and an ethanol concentration of 15.8 g/L with YP/S of 0.48 in 96 h.