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@ARTICLE{Labib:897250,
author = {Labib, Mohamed and Görtz, Jonas and Brüsseler, Christian
and Kallscheuer, Nicolai and Gätgens, Jochem and Jupke,
Andreas and Marienhagen, Jan and Noack, Stephan},
title = {{M}etabolic and process engineering for microbial
production of protocatechuate with {C}orynebacterium
glutamicum},
journal = {Biotechnology $\&$ bioengineering},
volume = {118},
number = {11},
issn = {1097-0290},
address = {New York, NY [u.a.]},
publisher = {Wiley},
reportid = {FZJ-2021-03712},
pages = {bit.27909},
year = {2021},
abstract = {3,4-Dihydroxybenzoate (protocatechuate, PCA) is a phenolic
compound naturally found in edible vegetables and medicinal
herbs. PCA is of high interest in the chemical industry and
has wide potential for pharmaceutical applications. We
designed and constructed a novel Corynebacterium glutamicum
strain to enable the efficient utilization of d-xylose for
microbial production of PCA. Shake flask cultivation of the
engineered strain showed a maximum PCA titer of
62.1 ± 12.1 mM (9.6 ± 1.9 g L−1) from
d-xylose as the primary carbon and energy source. The
corresponding yield was 0.33 C-mol PCA per C-mol d-xylose,
which corresponds to $38\%$ of the maximum theoretical
yield. Under growth-decoupled bioreactor conditions, a
comparable PCA titer and a total amount of
16.5 ± 1.1 g PCA could be achieved when d-glucose and
d-xylose were combined as orthogonal carbon substrates for
biocatalyst provision and product synthesis, respectively.
Downstream processing of PCA was realized via
electrochemically induced crystallization by taking
advantage of the pH-dependent properties of PCA. This
resulted in a maximum final purity of $95.4\%.$ The
established PCA production process represents a highly
sustainable approach, which will serve as a blueprint for
the bio-based production of other hydroxybenzoic acids from
alternative sugar feedstocks.},
cin = {IBG-1},
ddc = {570},
cid = {I:(DE-Juel1)IBG-1-20101118},
pnm = {2172 - Utilization of renewable carbon and energy sources
and engineering of ecosystem functions (POF4-217)},
pid = {G:(DE-HGF)POF4-2172},
typ = {PUB:(DE-HGF)16},
pubmed = {34343343},
UT = {WOS:000686279100001},
doi = {10.1002/bit.27909},
url = {https://juser.fz-juelich.de/record/897250},
}