Nanomaterials,
Journal Year:
2025,
Volume and Issue:
15(5), P. 376 - 376
Published: Feb. 28, 2025
Methyl
orange
(MO)
is
an
organic
synthetic
dye
widely
used
in
laboratory
and
industrial
applications.
In
settings,
it
serves
as
acid-base
indicator
due
to
its
distinct
color
change
both
acidic
alkaline
environments.
Industrially,
primarily
utilized
the
textile
industry
for
ultraviolet
(UV)
absorption
properties.
However,
discharge
leakage
of
methyl
into
environment
can
cause
severe
ecological
damage
pose
potential
carcinogenic
teratogenic
risks
human
health.
Therefore,
detecting
quantifying
concentration
various
matrices
crucial.
This
study
reports
synthesis
graphene
quantum
dots
(GQDs)
from
peel
a
precursor,
using
ethanol
dimethylformamide
(DMF)
solvents.
Cyan
(c-GQDs)
yellow
(y-GQDs)
were
synthesized
through
bottom-up
hydrothermal
method.
The
difference
attributed
redshift
caused
by
varying
ratio
pyridine
nitrogen
pyrrole
nitrogen.
These
GQDs
exhibited
notable
optical
properties,
with
c-GQDs
emitting
cyan
fluorescence
y-GQDs
under
UV
light.
To
investigate
quenching
effects,
nine
commonly
dyes
tested,
all
found
quench
y-GQDs,
having
most
significant
effect.
peel-derived
presence
poor
dispersion
DMF
solution.
Additionally,
possess
high
specific
surface
area,
abundant
functional
groups,
excellent
electronic
conductivity,
which
contribute
their
effective
performance.
average
thickness
(the
vertical
dimension
substrate
upwards)
was
3.51
nm,
confirming
graphene-like
structure.
They
emitted
within
wavelength
range
450-530
nm.
Notably,
linear
correlation
between
intensity
(regression
coefficient
=
0.9954),
indicating
sensing
materials
pollutant
detection.
International Journal of Biological Macromolecules,
Journal Year:
2024,
Volume and Issue:
265, P. 131007 - 131007
Published: March 18, 2024
Derived
from
bountiful
marine
organisms
(predominantly
algae,
fauna,
and
microorganisms),
polysaccharides
oligosaccharides
are
intricate
macromolecules
that
play
a
significant
role
in
the
growth
development
of
life.
Recently,
considerable
attention
has
been
paid
to
as
auspicious
natural
products
due
their
promising
biological
attributes.
Herein,
we
provide
an
overview
recent
advances
miscellaneous
activities
encompasses
anti-cancer,
anti-inflammatory,
antibacterial,
antiviral,
antioxidant,
anti-diabetes
mellitus,
anticoagulant
properties.
Furthermore,
furnish
concise
summary
underlying
mechanisms
governing
behavior
these
macromolecules.
We
hope
this
review
inspires
research
on
medicinal
applications
while
offering
fresh
perspectives
broader
facets.
International Journal of Biological Macromolecules,
Journal Year:
2024,
Volume and Issue:
264, P. 130550 - 130550
Published: March 1, 2024
A
novel
endo-1,4-β-xylanase-encoding
gene
was
identified
in
Alicyclobacillus
mali
FL18
and
the
recombinant
protein,
named
AmXyn,
purified
biochemically
characterized.
The
monomeric
enzyme
worked
optimally
at
pH
6.6
80
°C
on
beechwood
xylan
with
a
specific
activity
of
440.00
±
0.02
U/mg
good
catalytic
efficiency
(kcat/KM
=
91.89
s−1mLmg−1).
In
addition,
did
not
display
any
cellulose,
suggesting
possible
application
paper
biobleaching
processes.
To
develop
an
enzymatic
mixture
for
degradation,
association
between
AmXyn
previously
characterized
β-xylosidase
AmβXyl,
deriving
from
same
microorganism,
assessed.
two
enzymes
had
similar
temperature
optima
showed
highest
degree
synergy
when
AmβXyl
were
added
sequentially
to
xylan,
making
this
cost-competitive
suitable
industrial
use.
Therefore,
cocktail
also
employed
hydrolysis
wheat
bran
residue.
TLC
HPAEC-PAD
analyses
revealed
high
conversion
rate
xylose
(91.56
%),
placing
among
most
promising
biocatalysts
saccharification
agricultural
waste.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(18), P. 4508 - 4508
Published: Sept. 23, 2024
Carbon
dots
(CDs)
are
attracting
increasing
research
attention
due
to
their
exceptional
attributes,
including
biocompatibility,
water
solubility,
minimal
toxicity,
high
photoluminescence,
and
easy
functionalization.
Green
CDs,
derived
from
natural
sources
such
as
fruits
vegetables,
present
advantages
over
conventionally
produced
cost-effectiveness,
stability,
simplicity,
safety,
environmental
friendliness.
Various
methods,
hydrothermal
microwave
treatments,
used
synthesize
green
which
demonstrate
strong
luminescence.
These
properties
give
CDs
versatility
in
biological
applications,
bioimaging,
biosensing,
drug
delivery.
This
review
summarizes
the
prevalent
synthesis
methods
renewable
regarding
CDs;
examines
optical
features;
explores
extensive
drug/gene
delivery,
antimicrobial
antiviral
effects,
formatting
of
mathematical
components,
cancer
diagnosis,
pharmaceutical
formulations.
