File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

김용환

Kim, Yong Hwan
Enzyme and Protein Engineering Lab.
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

ABE production from yellow poplar through alkaline pre-hydrolysis, enzymatic saccharification, and fermentation

Author(s)
Cho, Dae HaengShin, Soo-JeongSang, Byoung-InEom, Moon-HoKim, Yong Hwan
Issued Date
2013-09
DOI
10.1007/s12257-013-0143-5
URI
https://scholarworks.unist.ac.kr/handle/201301/20353
Fulltext
http://link.springer.com/article/10.1007%2Fs12257-013-0143-5
Citation
BIOTECHNOLOGY AND BIOPROCESS ENGINEERING, v.18, no.5, pp.965 - 971
Abstract
ABE (acetone-butanol-ethanol) was produced through alkaline pre-hydrolysis, enzymatic saccharification, and fermentation using yellow poplar as a raw material. In alkaline pre-hydrolysis, 51.1% of the biomass remained as a residue. In the main woody components, the degrees of lignin and xylan removal were 94.3 and 62.0%, respectively. A yield of 80.9% for cellulose-to-glucose and 81.2% for xylan-to-xylose were obtained by enzymatic hydrolysis. The sugar composition of enzymatic hydrolysate was 95.1 g/L of glucose and 21.4 g/L of xylose. The enzymatic hydrolysate also contained 0.5 g/L of acetic acid and 0.5 g/L of total phenolics. Furfural and 5-hydroxymethylfurfural (5-HMF) were not detected in this hydrolysate. The yellow poplar hydrolysate (YPH) from enzymatic saccharification was used for the production of ABE using Clostridium acetobutylicum and C. beijerinckii. In YPH fermentation, C. acetobutylicum produced 18.1 g/L total ABE (productivity 0.38 g/L h, and yield 0.42), and C. beijerinckii produced 12.1 g/L (productivity 0.25 g/L h, and yield 0.37). Although the ABE productivity by C. beijerinckii was slightly low, the general performance of ABE fermentation in YPH was similar to or higher than those reported previously. Therefore, alkaline pre-hydrolysis could be a very effective pretreatment step prior to enzymatic hydrolysis
Publisher
KOREAN SOC BIOTECHNOLOGY & BIOENGINEERING
ISSN
1226-8372
Keyword (Author)
yellow poplarABEalkaline pre-hydrolysisClostridium acetobutylicumClostridium beijerinckiienzymatic saccharification
Keyword
CLOSTRIDIUM-BEIJERINCKIIBUTANOL PRODUCTIONLIGNIN REMOVALCORN STOVERCELLULOSEACIDHEMICELLULOSEINHIBITIONEXPLOSIONPHENOLS

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.