South African Journal of Chemical Engineering,
Год журнала:
2023,
Номер
46, С. 330 - 342
Опубликована: Авг. 22, 2023
Orthosiphon
aristatus
(O.
aristatus),
Andrographis
paniculata
(A.
paniculata),
and
Gynura
segetum
(G.
segetum)
leaves
were
subjected
as
raw
material
to
obtain
phytochemical
compounds
using
sub-critical
water
extraction
(SWE)
technique.
In
a
semi-batch
process,
the
was
performed
for
∼150
min
time
at
120
–
160°C
3
10
MPa.
The
Fourier-transform
infrared
spectroscopy
(FT–IR)
spectrum
depicted
that
phenolic
flavonoid
liberated
from
each
medicinal
plant
in
aforementioned-temperature
range.
second-order
kinetic
Weibull
models
also
may
properly
represent
describe
kinetics
curves
of
sample
these
operating
conditions
(120
MPa).
amounts
could
approach
284.73
mg
GAE/g
dried
(140°C,
MPa)
232.89
CE/g
MPa),
respectively.
Molecules,
Год журнала:
2023,
Номер
28(5), С. 2314 - 2314
Опубликована: Март 2, 2023
The
aboveground
and
root
parts
of
Onosma
mutabilis
were
extracted
using
subcritical
water
the
process
was
optimized
with
response
surface
methodology.
composition
extracts
determined
by
chromatographic
methods
compared
to
that
conventional
maceration
plant.
optimum
total
phenolic
contents
for
part
roots
193.9
174.4
μg/g,
respectively.
These
results
achieved
at
a
temperature
150
°C,
an
extraction
time
180
min,
water/plant
ratio
0.1,
both
Principal
component
analysis
revealed
contained
mainly
phenols,
ketones,
diols,
mostly
alkenes
pyrazines,
whereas
extract
from
terpenes,
esters,
furans,
organic
acids.
quantification
selected
substances
showed
favorably
maceration,
especially
respect
pyrocatechol
(1062
as
10.2
μg/g)
epicatechin
(1109
23.4
μg/g).
Furthermore,
plant
twice
much
these
two
phenolics
part.
Subcritical
O.
is
environmentally
friendly
method
can
higher
concentrations
maceration.
Processes,
Год журнала:
2023,
Номер
11(5), С. 1379 - 1379
Опубликована: Май 3, 2023
Mango
seed
kernel
(MSK)
extract
contains
phytochemicals,
bioactives,
and
fatty
acids
that
are
of
interest
to
food
nutritional
scientists.
The
subcritical
water
extraction
process
(SCWE)
can
be
effective
in
extracting
valuable
bioactives
from
MSK.
In
this
study,
SCWE
was
investigated
optimized
for
the
MSK
using
Box–Behnken
experimental
design.
yield
examined
as
a
function
various
variables,
namely,
solvent-to-feed
(L/S)
ratio,
temperature
(T),
time
(t).
Analysis
variance
(ANOVA)
results
showed
most
significant
variable
impacted
yield.
A
maximum
52.3%
obtained
at
conditions
L/S
ratio
=
20.7,
T
116.5
°C,
t
45
min.
Antioxidant
assessment
higher
total
phenolic
content
(19.2
mg
GAE/g),
DPPH
ABTS
radical
scavenging
activity
(>91%),
than
extracts
by
conventional
hot
ultra-sound
assisted
extraction.
Furthermore,
an
natural
preservative
its
inclusion
(20%
v/v)
improved
oxidative
stability
cow
ghee
with
par
performance
synthetic
butylated
hydroxyanisole
antioxidant
(0.02%
w/v).
Thus,
study
demonstrated
green
method
production
could
applied
preservation
products.
International Journal of Molecular Sciences,
Год журнала:
2022,
Номер
23(23), С. 14956 - 14956
Опубликована: Ноя. 29, 2022
Oral
mucositis
(OM),
a
common
side
effect
of
oncological
treatment,
is
an
oral
mucosal
disorder
characterized
by
painful
ulcerations
and
increased
risk
infection.
The
use
natural
antioxidants
to
suppress
the
redox
imbalance
responsible
for
OM
condition
has
emerged
as
interesting
approach
prevent/treat
OM.
This
study
aims
explore
chestnut
(Castana
sativa)
shells
potential
active
ingredient
against
Therefore,
were
extracted
at
different
temperatures
(110-180
°C)
Subcritical
Water
Extraction
(SWE),
aiming
recover
antioxidants.
extracts
also
evaluated
microorganisms
present
in
cavity
well
on
human
cell
lines
(TR146
HSC3).
highest
phenolic
content
was
obtained
with
extraction
temperature
110
°C,
exhibiting
best
antioxidant/antiradical
activities
scavenging
efficiencies
HOCl
(IC50
=
4.47
μg/mL)
ROO•
(0.73
μmol
TE/mg
DW).
High
concentrations
acids
(e.g.,
gallic
protocatechuic
acids)
flavanoids
(catechin,
epicatechin
rutin)
profile.
antimicrobial
activity
several
during
OM,
such
Streptococcus,
Staphylococcus,
Enterococcus,
Escherichia,
demonstrated.
Finally,
effects
HSC3
TR146
revealed
that
extract
prepared
°C
had
lowest
IC50
(1325.03
468.15
µg/mL,
respectively).
highlights
Chemistry & Biodiversity,
Год журнала:
2023,
Номер
20(5)
Опубликована: Апрель 25, 2023
Subcritical
water
extraction
was
used
to
extract
bioactive
phenolic
compounds
from
Vaccinium
dunalianum
Wight
leaves.
The
optimal
conditions
were
determined
as
an
temperature
of
150
°C,
time
40
min,
and
a
liquid-solid
ratio
35
:
1
mL/g.
total
content
reached
21.35
mg
gallic
acid
/g,
which
16
%
higher
than
that
by
hot
extraction.
subcritical
exhibited
strong
scavenging
activity
DPPH
free
radical
ABTS+
radical,
well
significant
tyrosinase
inhibitory
activity.
study
suggests
can
alter
the
composition
extracts,
leading
production
various
compounds,
effective
antioxidants,
inhibitors
dulciana
These
findings
confirm
potential
natural
antioxidant
molecule
source
for
medicine
food
industries,
therapy
skin
pigmentation
disorders.
