Open AccessBiorefining Process of Carbohydrate Feedstock (Agricultural Onion Waste) to Acetic Acid
Author(s) -
Ho Myeong Kim,
In Seong Choi,
Seoyoun Lee,
Jung Eun Yang,
Seul-Gi Jeong,
Ji Hye Park,
Seung Hee Ko,
In Min Hwang,
Ho Hyun Chun,
Seung Gon Wi,
Jin-Cheol Kim,
Hae Woong Park
Publication year - 2019
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.9b03093
Subject(s) - biorefining , raw material , acetic acid , pulp and paper industry , fermentation , chemistry , hydrolysis , waste management , valorisation , biofuel , biorefinery , food science , organic chemistry , engineering
The biorefining of agricultural waste into green chemicals has clear potential for improving global environmental sustainability. In this study, we evaluated the potential of acetic acid production from carbohydrate feedstock (onion waste, OW) as a more environmentally friendly source than feedstock produced from natural gas. In particular, OW is an ideal feedstock for the biorefining process as it contains a sufficient amount of carbohydrates (69.7%). Five days of the simultaneous saccharification and two-step fermentation (SSTF) process produced acetic acid from OW more efficiently than the simultaneous saccharification and cofermentation (SSCF) process. SSTF produced 19.3 g/L acetic acid and recorded the highest conversion yield (90.5%) from OW (6% substrate loading, w/v). These results suggested that acetic acid can be efficiently and sustainably produced from OW by the SSTF process.
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