Journal of Agricultural and Food Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 21, 2024
Succinic
acid
is
an
essential
bulk
chemical
with
wide-ranging
applications
in
materials,
food,
and
pharmaceuticals.
With
the
advancement
of
biotechnology,
there
has
been
a
surge
focus
on
low-carbon
sustainable
microbial
synthesis
methods
for
producing
biobased
succinic
acid.
Due
to
its
high
intrinsic
tolerance,
Nature Communications,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Dec. 20, 2023
Abstract
Succinic
acid
(SA)
is
an
important
C4-dicarboxylic
acid.
Microbial
production
of
SA
at
low
pH
results
in
purification
costs
and
hence
good
overall
process
economics.
However,
redox
imbalances
limited
biosynthesis
from
glucose
via
the
reductive
tricarboxylic
(TCA)
cycle
yeast.
Here,
we
engineer
strictly
aerobic
yeast
Yarrowia
lipolytica
for
efficient
without
control.
Introduction
TCA
into
cytosol
a
succinate
dehydrogenase-disrupted
strain
causes
arrested
cell
growth.
Although
adaptive
laboratory
evolution
restores
growth,
NADH
supply
restricts
production.
Reconfiguration
pathway
mitochondria
through
coupling
oxidative
regeneration
improved
In
pilot-scale
fermentation,
engineered
produces
111.9
g/L
with
yield
0.79
g/g
within
62
h.
This
study
paves
way
industrial
biobased
SA.
Biotechnology for Biofuels and Bioproducts,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: May 29, 2024
Succinic
acid
(SA)
is
one
of
the
top
platform
chemicals
with
huge
applications
in
diverse
sectors.
The
presence
two
carboxylic
groups
on
terminal
carbon
atoms
makes
SA
a
highly
functional
molecule
that
can
be
derivatized
into
wide
range
products.
biological
route
for
production
cleaner,
greener,
and
promising
technological
option
potential
to
sequester
potent
greenhouse
gas,
dioxide.
recycling
renewable
biomass
(an
indirect
form
CO
Bioresource Technology,
Journal Year:
2024,
Volume and Issue:
399, P. 130641 - 130641
Published: March 27, 2024
This
study
presents
a
cost-effective
strategy
for
producing
organic
acids
from
glucose
and
xylose
using
the
acid-tolerant
yeast,
Issatchenkia
orientalis.
I.
orientalis
was
engineered
to
produce
lactic
acid
xylose,
resulting
strain,
SD108XL,
successfully
converted
sorghum
hydrolysates
into
acid.
In
order
enable
low-pH
fermentation,
self-buffering
strategy,
where
generated
by
SD108XL
strain
during
fermentation
served
as
buffer,
developed.
As
result,
SD108
produced
67
g/L
of
73
40
simulating
sugar
composition
biomass
hydrolysates.
Moreover,
techno-economic
analysis
(TEA)
underscored
efficiency
in
streamlining
downstream
process,
thereby
reducing
production
costs.
These
results
demonstrate
potential
platform
cellulosic
FEMS Yeast Research,
Journal Year:
2024,
Volume and Issue:
24
Published: Jan. 1, 2024
Previously,
we
reported
an
engineered
Saccharomyces
cerevisiae
CEN.PK113-1A
derivative
able
to
produce
succinic
acid
(SA)
from
glycerol
with
net
CO2
fixation.
Apart
utilization
pathway
that
generates
NADH,
the
strain
was
equipped
NADH-dependent
reductive
branch
of
TCA
cycle
(rTCA)
and
a
heterologous
SA
exporter.
However,
results
indicated
significant
amount
carbon
still
entered
CO2-releasing
oxidative
cycle.
The
current
study
aimed
tune
down
flux
through
by
targeting
mitochondrial
uptake
pyruvate
cytosolic
intermediates
rTCA
pathway,
as
well
succinate
dehydrogenase
complex.
Thus,
tested
effects
deletions
MPC1,
MPC3,
OAC1,
DIC1,
SFC1,
SDH1
on
production.
highest
improvement
achieved
combined
deletion
MPC3
SDH1.
respective
produced
up
45.5
g/L
SA,
reached
maximum
yield
0.66
gSA/gglycerol,
accumulated
lowest
amounts
byproducts
when
cultivated
in
shake-flasks.
Based
obtained
data,
consider
further
reduction
import
highly
attractive.
Moreover,
approaches
presented
might
also
be
valuable
for
improving
production
sugars
(instead
glycerol)
are
source
carbon.