TY - JOUR
T1 - Integrated process development of a reactive extraction concept for itaconic acid and application to a real fermentation broth
AU - Gorden, Jannick
AU - Geiser, Elena
AU - Wierckx, Nick
AU - Blank, Lars M.
AU - Zeiner, Tim
AU - Brandenbusch, Christoph
PY - 2017/2/28
Y1 - 2017/2/28
N2 - Itaconic acid (IA) has a high potential to be used as a bio-based platform chemical and its biocatalytic production via fermentation has significantly improved within the last decade. Additionally downstream processing using reactive extraction (RE) was described, potentially enabling a more efficient sustainable bioprocess producing IA. The bottleneck to overcome is the connection of up- and downstream processing, caused by lack of biocompatibility of the RE systems and direct application to fermentation broth. Within this study, a biocompatible RE system for IA is defined (pH dependency, extraction mechanism) and used for direct application to a fermentation broth. By optimizing the biocatalyst, the production medium, and the extraction system in an integrated approach, it was possible to define critical parameters that enabled a tuning of the overall bioprocess. With an extraction yield of YIA = 0.80 ± 0.03, IA could be produced as sole carboxylic acid (b IA ,0 aq = 0.490 mol/kgaq) using a RE system consisting of ethyl oleate as organic solvent and tri-n-octylamine as extractant (bT-C8 org = 0.6 mol/kgorg). This work is a proof of concept and demonstrates that by joint consideration of up- and downstream processing, optimized bioprocesses can be developed.
AB - Itaconic acid (IA) has a high potential to be used as a bio-based platform chemical and its biocatalytic production via fermentation has significantly improved within the last decade. Additionally downstream processing using reactive extraction (RE) was described, potentially enabling a more efficient sustainable bioprocess producing IA. The bottleneck to overcome is the connection of up- and downstream processing, caused by lack of biocompatibility of the RE systems and direct application to fermentation broth. Within this study, a biocompatible RE system for IA is defined (pH dependency, extraction mechanism) and used for direct application to a fermentation broth. By optimizing the biocatalyst, the production medium, and the extraction system in an integrated approach, it was possible to define critical parameters that enabled a tuning of the overall bioprocess. With an extraction yield of YIA = 0.80 ± 0.03, IA could be produced as sole carboxylic acid (b IA ,0 aq = 0.490 mol/kgaq) using a RE system consisting of ethyl oleate as organic solvent and tri-n-octylamine as extractant (bT-C8 org = 0.6 mol/kgorg). This work is a proof of concept and demonstrates that by joint consideration of up- and downstream processing, optimized bioprocesses can be developed.
KW - Biocatalysis
KW - Downstream processing
KW - Itaconic acid
KW - Reactive extraction
KW - Ustilago maydis
UR - http://www.scopus.com/inward/record.url?scp=85016280083&partnerID=8YFLogxK
U2 - 10.1002/elsc.201600253
DO - 10.1002/elsc.201600253
M3 - Article
AN - SCOPUS:85016280083
SN - 1618-0240
VL - 17
SP - 809
EP - 816
JO - Engineering in Life Sciences
JF - Engineering in Life Sciences
ER -