Retrieval of Polyphenols Using Aqueous Two-Phase Systems Based on Ethyl Lactate and Organic Salts
Molecules,
Год журнала:
2025,
Номер
30(7), С. 1532 - 1532
Опубликована: Март 30, 2025
Food
waste
remains
a
critical
global
concern,
with
approximately
one
third
of
all
food
produced
being
ultimately
discarded.
Therefore,
it
is
urgent
to
develop
new
techniques
for
the
effective
repurpose
waste.
Aqueous
two-phase
systems
(ATPSs)
stand
out
as
simple
and
biocompatible
liquid–liquid
extraction
technique
recovery
bioactive
substances
from
In
ATPSs,
target
species
partition
between
two
liquid
phases,
according
affinity,
which
facilitates
its
extraction.
This
work
aimed
at
extracting
three
polyphenols—chlorogenic
acid
(CA),
ferulic
(FA),
resveratrol
(RV)—through
application
eco-friendly
ATPSs
composed
water,
ethyl
lactate
(EL),
organic
salts,
namely
disodium
succinate
(Na2Succinate)
tartrate
(Na2Tartrate),
future
in
valorisation
All
partitions
presented
successful
results,
values
coefficients
(K)
higher
than
1
efficiencies
(E)
50%,
indicating
preferential
migration
polyphenols
top
phase.
The
FA
using
ATPS
based
on
Na2Tartrate
most
promising
K
=
19
±
6
E
(94.2
0.9)%
longest
tie-line.
Additionally,
comparison
previous
works
research
group
was
drawn,
RV
exhibiting
outstanding
performance
across
studied
ATPSs.
assessed
were
shown
hold
immense
potential
polyphenols.
Язык: Английский
A Zirconium-Based Metal–Organic Framework as an Effective Green Catalyst for the Synthesis of Biodiesel
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 23, 2025
CAU-28
(CAU
=
Christian-Albrechts-University)
is
a
zirconium-based
metal-organic
framework
(MOF)
that
features
bio-renewable
linker
(furan-2,5-dicarboxylic
acid)
and
can
be
obtained
through
green
synthesis.
In
this
work,
we
report
an
optimized
synthesis
of
CAU-28,
substantially
enhancing
the
yield
from
2
to
53
%.
Moreover,
taking
advantage
high
thermal
chemical
stability
as
well
MOF's
surface
area
(>
1000
m2
g-1),
porosity,
four
open
metal
sites
per
Zr6-cluster,
have
demonstrated
potential
catalyst
produce
biodiesel
esterification
reactions.
Under
catalytic
conditions,
able
convert
oleic
acid
its
fatty
methyl
ester
counterpart
with
selectivity,
using
loading
only
5
wt
%
1:24
molar
ratio
acid:methanol,
at
90
°C
for
min.
Furthermore,
also
shows
stability,
maintaining
activity
three
reaction
cycles.
Язык: Английский
Corn Stover Lignin as a Solid Acid Catalyst for the Esterification of Oleic Acid
Particle & Particle Systems Characterization,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 21, 2024
Abstract
The
catastrophic
ramifications
of
fossil
fuels
on
the
environment
have
prompted
search
for
renewable
energy
sources.
Over
recent
decades,
biodiesel
has
garnered
attention
as
a
promising
direct
alternative
to
diesel
fuel;
however,
reliance
homogeneous
catalysts
and
requirement
refined
vegetable
oil
feedstocks
present
financial
sustainability
concerns.
Thus,
there
exists
need
development
sustainable
cost‐effective
catalytic
solutions.
Herein,
application
lignin,
an
abundant
biomass,
effective
heterogeneous
catalyst
is
reported
production
via
esterification
oleic
acid.
Lignin
extracted
from
corn
straw
using
sulfuric
acid,
which
endows
sulfonic
acid
groups
(0.85
mmol
g
−1
)
its
structure
allowing
it
act
without
additional
post‐treatments.
Conversion
achieved
at
97%
1:3
methanol
molar
ratio
with
5
wt.%
loading
90
°C
after
only
30
min.
Moreover,
exhibits
remarkable
turnover
frequency
2.61
min
proving
efficiency.
These
findings
demonstrate
that
can
be
prepared
biomass
waste
offering
significantly
cheaper
less
intensive
synthesis
process
paradigm
shift
non‐edible
cooking
oils.
Язык: Английский