Ultrasonics Sonochemistry,
Journal Year:
2024,
Volume and Issue:
110, P. 107038 - 107038
Published: Aug. 23, 2024
A
response
surface
methodology
(RSM)
and
one-factor
method
were
established
to
investigate
the
optimum
conditions
for
extraction
of
lychee
nuclear
polysaccharides
(LSP)
by
ultrasonic-assisted
pectinase.
The
content
basic
components
in
was
determined.
antioxidant
activity
well
determined
compared
differences
activities
extracted
water
(LSP-HW)
those
at
ultrasound-assisted
enzyme
(LSP-UAE).
polysaccharide
increased
with
increase
concentration.
anti-hydroxyl
radical
anti-lipid
peroxidation
abilities
more
excellent,
LSP-HW
slightly
better
than
LSP-UAE
terms
activity,
but
difference
not
significant.
In
solubility;
without
deproteinization
best,
followed
LSP-UAE,
worst
after
deproteinization.
higher
glycoprotein
content,
solubility
its
polysaccharide.
Compared
existing
methods,
this
experiment
greatly
improved
rate
further
enriched
polysaccharides.
Ultrasonics Sonochemistry,
Journal Year:
2024,
Volume and Issue:
109, P. 107010 - 107010
Published: July 31, 2024
Purple
mangosteen
scarfskin
polysaccharide
has
many
important
physiological
functions,
but
its
preparation
method,
structure,
and
function
need
further
exploration.
A
was
obtained
from
by
ultrasonic-assisted
extraction
purified.
On
this
basis,
structure
physicochemical
properties
were
investigated.
The
Congo
red
experiment
used
to
determine
whether
it
a
triple
helix
conformation.
of
purple
analyzed
infrared
spectroscopy
nuclear
magnetic
analysis.
antioxidant
activities
the
above
three
polysaccharides
studied
related
experiments.
It
found
that
monosaccharide
composition
mainly
contained
large
amount
arabinose,
small
rhamnoose
very
galacturonic
acid,
core
main
chain
composed
1,4-α-arabinose.
did
not
have
spatial
configuration.
After
acetylation
polysaccharide,
acetylated
derivative
with
degree
substitution
0.33
obtained.
they
had
certain
scavenging
inhibiting
effects
on
hydroxyl
radicals
lipid
peroxidation,
their
concentration
polysaccharides.
Meanwhile,
activity
significantly
enhanced
after
modified
treatment
acetylation,
which
indicated
chemical
modification
could
effectively
improve
some
polysaccharide.
studies
provided
reference
value
for
research
development
BMC Complementary Medicine and Therapies,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: July 25, 2024
Abstract
Background
Polysaccharide
from
Garcinia
mangostana
rind
has
many
biological
activities
and
deserves
further
research.
Methods
The
antioxidant
properties
of
UAEE-GMRP,
UAEE-GMRP-1
A,
CM-30,
Ac-30
were
evaluated
through
two
different
activity
experimental
systems.
Results
four
polysaccharides
had
a
better
scavenging
effect
on
hydroxyl
radicals,
while
their
inhibitory
lipid
peroxidation
was
relatively
weak.
However,
overall,
the
showed
certain
degree
potential
application
in
experiments
mentioned
above,
especially
chemically
modified
rind,
which
effectively
improved
activity.
This
also
indicates
that
chemical
modification
is
method
to
improve
polysaccharide
In
addition,
these
exploration
experiments,
carboxymethylated
stronger
compared
other
three
polysaccharides.
Conclusion
carboxymethylation
may
have
great
for
application.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: June 18, 2024
Abstract
The
derivation
of
polysaccharide
has
an
important
impact
on
its
properties.
preparation
process
phosphorylated-shaddock
skin
polysaccharides
(SSP)
and
acetylated-SSP
was
optimized
by
the
response
surface
method.
constructed
model
accurate
reliable
in
predicting
substitution
phosphate
content
phosphorylated-SSP.
This
method
simple
easy
to
operate,
which
provided
a
basis
for
large
number
derivatives.
Antioxidants,
Journal Year:
2025,
Volume and Issue:
14(2), P. 149 - 149
Published: Jan. 27, 2025
Coriander
(Coriandrum
sativum)
is
a
classical
medicinal
and
edible
herb
as
well
spice,
but
the
physicochemical
biological
properties
of
its
polysaccharides
have
not
been
fully
studied.
In
this
study,
were
extracted
using
an
ultrasonic-assisted
method
purified
from
fresh
coriander,
then
coriander
polysaccharide
(CSP)
fraction
was
separated
agarose
gel
Q-Sepharose
Fast
Flow
column.
The
total
sugar
content,
protein
content
monosaccharides
composition
CSPs
determined
phenol–sulfuric
acid
method,
Coomassie
Brilliant
Blue
HPLC.
structural
characterization
detected
ultraviolet
spectrophotometry
FT-IR
spectroscopy.
DPPH
ABTS
free
radicals
used
to
explore
their
antioxidant
activities,
while
inhibitory
abilities
α-amylase
α-glucosidase
evaluate
hypoglycemic
activity.
After
that,
immunomodulatory
antitumor
activities
investigated
macrophage
RAW264.7
HepG2
cells
targets.
results
showed
that
contents
66.90
±
1.44%
1.06
0.32%,
respectively.
mainly
composed
fucose,
rhamnose,
arabinose,
galactose,
glucose,
galacturonic
glucuronic
acid,
with
molar
ratio
1.13:15.11:9.60:25.98:1.55:44.33:2.29,
may
be
acidic
heteropolysaccharide
containing
pyran
rings,
α-
β-glycosidic
bonds
acid.
Results
in
vitro
experiments
IC50
for
scavenging
0.759
mg/mL
1.758
mg/mL,
respectively;
values
inhibiting
0.634
2.178
concentration
25~200
μg/mL
no
obvious
toxicity
RAW264.7,
when
treated
100
CSPs,
relative
cell
phagocytosis
capacity
secreted
nitric
oxide
amount
153.75
12.01%
133.56
5.37%,
concentration-dependent
ability
inhibit
growth
within
test
0.25–2.0
mg/mL.
Summarizing
results,
due
excellent
antioxidant,
anti-tumor
expected
show
good
potential
comprehensive
development
food
medicine.
Journal of Food Science,
Journal Year:
2025,
Volume and Issue:
90(2)
Published: Feb. 1, 2025
Gualou
(Trichosanthes
kirilowii
Maxim)
and
Xiebai
(Allium
macrostemon
Bunge)
have
been
extensively
studied
for
their
diverse
active
ingredients,
which
include
flavonoids,
polysaccharides,
triterpenoids.
This
study
employed
a
single-factor
experiment
alongside
the
Plackett-Burman
design
utilized
response
surface
methodology
to
optimize
ultrasonic-enzyme-assisted
extraction
(U-EAT)
method
functional
components
in
(GLXB).
The
optimal
conditions
were
identified
as
solid-to-liquid
ratio
of
1:11
g/mL,
an
alcohol
concentration
55%,
enzyme
1.2%,
temperature
40°C.
yields
triterpenoids
obtained
0.94
±
0.05,
260.46
1.78,
118.69
0.71
mg/g,
respectively,
demonstrating
increases
59.19%,
29.03%,
46.10%
compared
HL
(HL,
traditional
reflux
method).
Furthermore,
vitro
digestion
GLXB
extract
demonstrated
significant
lipid-lowering
hypoglycemic
effects.
facilitated
flocculation
lipid
droplets
during
exhibited
capacity
reduce
rate
fat
digestion.
These
findings
indicate
that
U-EAT
significantly
enhanced
content
ingredients
improved
activities
extract,
highlighting
its
potential
further
development
application
foods.
