Impacts of ultrasound-assisted Fenton degradation and alkaline de-esterification on structural properties and biological effects of pectic polysaccharides from Tartary buckwheat leaves
Ultrasonics Sonochemistry,
Год журнала:
2024,
Номер
106, С. 106895 - 106895
Опубликована: Май 1, 2024
Tartary
buckwheat
(Fagopyrum
tataricum
(L.)
Gaertn)
leaf
has
abundant
rhamnogalacturonan-I
enriched
pectic
polysaccharides,
which
exert
various
health-promoting
effects.
Nevertheless,
the
potential
relationship
between
chemical
structure
and
biological
function
of
polysaccharides
from
leaves
(TBP)
remains
unclear.
Therefore,
to
bridge
gap
TBP,
impacts
ultrasound-assisted
Fenton
degradation
(UFD)
mild
alkaline
de-esterification
(MAD)
on
structural
properties
effects
TBP
were
systematically
studied.
Compared
with
native
(molecular
mass,
9.537
×
104
Da),
molecular
masses
degraded
TBPs
(TBP-MMW,
4.811
Da;
TBP-LMW,
2.101
Da)
significantly
reduced
by
UFD
modification,
while
their
primary
structures
overall
stable.
Besides,
compared
(esterification
degree,
22.73
%),
esterification
degrees
de-esterified
(TBP-MDE,
14.27
%;
TBP-LDE,
6.59
%)
notably
MAD
also
Furthermore,
results
revealed
that
both
modifications
could
improve
antioxidant,
antiglycation,
immunostimulatory
TBP.
Indeed,
TBP's
negatively
correlated
its
mass
positively
linked
free
uronic
acids.
The
findings
demonstrate
are
promising
techniques
for
modification
can
remarkedly
promote
present
conducive
better
understanding
structure-bioactivity
relationship.
Язык: Английский
Structural properties and biological effects of pectic polysaccharides extracted from Tartary buckwheat sprouts by high pressure-assisted deep eutectic solvent extraction
LWT,
Год журнала:
2024,
Номер
203, С. 116397 - 116397
Опубликована: Июнь 24, 2024
Tartary
buckwheat
sprout
is
commonly
consumed
as
salads
and
healthy
vegetables,
which
rich
in
pectic
polysaccharides.
Nevertheless,
the
knowledge
about
polysaccharides
extracted
from
sprouts
(TBSP)
are
still
limited.
To
facilitate
potential
applications
of
TBSP
fortified
ingredients
or
foods,
impacts
conventional
hot
water
extraction
(CHW),
deep
eutectic
solvent
(DES)-assisted
(DEE),
high
pressure-assisted
DES
(HPDEE)
on
their
structural
biological
properties
were
evaluated.
Compared
with
CHW
method,
our
findings
revealed
that
both
DEE
HPDEE
methods
could
obviously
promoted
yields
regulated
properties,
resulting
improvement
functions.
Especially,
method
decreased
molecular
mass,
apparent
viscosity,
esterification
degree
TBSP,
while
notably
increased
uronic
acids
bound
flavonoids.
Indeed,
remarkedly
enhance
antioxidant,
anti-glycosylation,
immunostimulatory
activities
probably
via
reducing
its
mass
esterification,
increasing
free
These
reveal
has
good
potentials
for
selectively
extracting
distinctive
superior
Язык: Английский
The degree of esterification influences the bioactivity of pectic polysaccharides isolated from Lithocarpus litseifolius
Food Chemistry X,
Год журнала:
2025,
Номер
unknown, С. 102462 - 102462
Опубликована: Апрель 1, 2025
Pectic
polysaccharides
are
the
mainly
bioactive
components
in
Lithocarpus
litseifolius
(sweet
tea)
leaves.
Nevertheless,
owing
to
their
diverse
and
complex
chemical
structures,
detailed
structure-function
relationships
(SFR)
of
pectic
from
sweet
tea
(STP)
still
unclear.
Herein,
influence
STP's
esterified
degree
on
its
biological
functions
was
uncovered.
The
results
showed
that
de-esterified
STPs
with
a
middle-esterified
(33.53
%)
low-esterified
(7.66
were
successfully
prepared
when
compared
original
high-esterified
STP
(47.01
%),
primary
structural
features
almost
stable
after
controllable
de-esterification
treatment.
Furthermore,
findings
inferred
antioxidant,
anti-diabetic,
immunostimulatory
inverse
correlations
degree.
Moreover,
lower-esterified
could
be
more
easily
utilized
by
intestinal
microorganisms
positively
regulate
gut
microbial
composition.
Overall,
these
can
provide
valuable
insights
for
elucidating
precise
SFR.
Язык: Английский
Pectic polysaccharides from Tartary buckwheat sprouts: Effects of ultrasound-assisted Fenton treatment and mild alkali treatment on their physicochemical characteristics and biological functions
Ultrasonics Sonochemistry,
Год журнала:
2024,
Номер
109, С. 107014 - 107014
Опубликована: Авг. 4, 2024
Buckwheat
sprouts
are
rich
in
pectic
polysaccharides,
which
possess
numerous
health-improving
benefits.
However,
the
precise
structure-activity
relationship
of
polysaccharides
from
Tartary
buckwheat
(TP)
is
still
scant,
ultimately
restricts
their
applications
food
industry.
Hence,
both
ultrasound-assisted
Fenton
treatment
(UAFT)
and
mild
alkali
(MATT)
were
utilized
for
modification
TP,
then
effects
physicochemical
characteristics
original
modified
TPs
on
bioactivities
assessed.
Our
findings
reveled
that
UAFT
could
precisely
reduce
TP's
molecular
weight,
with
levels
decreased
8.191
×
10
Язык: Английский