Fermentation,
Год журнала:
2023,
Номер
9(7), С. 608 - 608
Опубликована: Июнь 28, 2023
The
simultaneous
saccharification
and
fermentation
(SSF)
technique
holds
promise
for
the
conversion
of
lignocellulose
to
ethanol.
However,
optimal
temperature
yeast
is
lower
than
enzymatic
hydrolysis
process,
which
leads
actual
production
process
SSF
usually
being
38
°C.
In
this
work,
two
ultraviolet
(UV)-induced
mutations
were
performed
step
by
using
Saccharomyces
cerevisiae
BY4742
as
original
strain
enable
perform
well
at
higher
temperatures.
Thermotolerant
strains
obtained
through
mutagenesis
screening,
YUV1-1
YUV2-2,
utilized
a
targeted
40
They
ethanol
yields
comparable
those
°C
in
SSF,
whereas
decreased
about
10%
compared
This
study
proves
that
thermotolerant
adapted
elevated
temperatures
can
be
UV
thereby
increasing
stability
processes
lowering
subsequent
distillation
costs.
Molecules,
Год журнала:
2023,
Номер
28(13), С. 4932 - 4932
Опубликована: Июнь 22, 2023
The
role
of
nanotechnology
is
increasingly
important
in
our
society.
Through
it,
scientists
are
acquiring
the
ability
to
understand
structure
and
properties
materials
manipulate
them
at
scale
atoms
molecules.
Nanomaterials
forefront
rapidly
growing
field
nanotechnology.
synthesis
nanostructured
materials,
especially
metallic
nanoparticles,
has
attracted
tremendous
interest
over
past
decade
due
their
unique
properties,
making
these
excellent
indispensable
many
areas
human
activity.
These
special
can
be
attributed
small
size
large
specific
surface
area
which
very
different
from
those
bulk
materials.
Nanoparticles
sizes
shapes
needed
for
applications,
so
a
variety
protocols
required
produce
monodisperse
nanoparticles
with
controlled
morphology.
purpose
this
review
firstly
introduce
reader
basic
aspects
related
and,
secondly,
discuss
greater
detail.
This
article
explains
concepts
nanotechnology,
introduces
methods
synthesizing
describes
types,
possible
applications.
Of
proposed
metal
chemical
reduction
usually
preferred
because
it
easy
perform,
cost-effective,
efficient,
also
allows
control
structural
parameters
through
optimization
conditions.
Therefore,
method
discussed
more
detail—each
factor
by
described
detail,
i.e.,
precursors,
solvents,
reducing
agents,
stabilizers.
that
used
characterize
nanomaterials
described.
Finally,
based
on
available
literature
collection,
shown
how
changing
parameters/methods
affects
final
characteristics
nanoparticles.
Biomass Conversion and Biorefinery,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 9, 2024
Abstract
Pretreatments
have
been
identified
as
the
core
of
lignocellulosic
biorefinery
design
due
to
biomass
fractionation
and
influence
on
subsequent
reaction
downstream
processes.
However,
most
pretreatments
are
described
single-step,
maximizing
valorization
a
side
stream.
Therefore,
sequential
could
better
describe
integral
obtain
platform
products
that
can
be
further
used
for
value-added
products.
This
work
experimentally
analyzed
rice
husks
individual
fractions.
It
was
demonstrated
dilute
acid-wet
air
oxidation
(DA-WAO)
sequence
is
suitable
designs
since
it
possible
solubilize
up
80%
hemicellulose
during
first
stage
subsequently
fractionate
almost
90%
lignin
after
second
stage,
obtaining
pretreated
solid
with
high
cellulose
content.
The
isolated
fractions
were
furfural,
levulinic
acid,
phenolic
compounds.
As
main
result,
yields
conversions
improved
when
valorizing
based
pretreatment.
In
contrast,
black
liquor
combination
scheme
decreased
aldehyde
such
vanillin
syringaldehyde
by
4.8–11.9%.
findings
indicate
from
approach,
improve
yield
Despite
decrease
compounds,
acid
furfural
production
significantly
enhanced.
