Polymers,
Journal Year:
2024,
Volume and Issue:
17(1), P. 82 - 82
Published: Dec. 31, 2024
This
study
focuses
on
the
extraction
of
phenolic
compounds
from
fermentation
Phanerochaete
chrysosporium
and
Gloeophyllum
trabeum.
The
main
goal
was
to
synthesize
phenol/chitosan
microspheres
PVA
films
characterized
using
FTIR,
TGA,
DSC,
SEM,
mechanical
tests
evaluate
their
physical,
chemical,
properties
for
antimicrobial
packaging
applications.
Homogeneous
chitosan
loaded
with
lignin-derived
phenols
were
obtained,
showing
controlled
release
compounds.
incorporation
into
PVA/chitosan
resulted
in
significant
improvements
properties:
exhibited
an
elastic
modulus
36.14
±
3.73
MPa,
tensile
strength
12.01
1.14
elongation
at
break
65.19
5.96%.
Thermal
revealed
that
chitosan-containing
had
enhanced
thermal
stability,
decomposition
temperatures
(T10)
reaching
116.77
°C,
compared
89.28
°C
pure
PVA.
In
terms
activity,
PVA/chitosan/phenol
effectively
reduced
Lactobacillus
growth
milk
acidity,
maintaining
quality
up
96
h
room
temperature,
outperforming
controls
acetic
acid
H2O2.
also
inhibit
yeast
one
week.
conclusion,
can
be
effective
agents
dairy,
but
use
should
monitored.
Additionally,
PVA/chitosan-phenol
offer
biodegradability,
properties,
sustainability
diverse
Royal Society Open Science,
Journal Year:
2025,
Volume and Issue:
12(2)
Published: Feb. 1, 2025
Herein,
NiO
and
Ag/NiO
NPs
were
produced
via
the
solution
combustion
method
using
nickel
nitrate
silver
as
oxidizers
Cocos
nucifera
water
a
fuel
at
450°C.
The
study
also
explores
their
applications
in
photocatalytic
dye
degradation,
H
2
production
antibacterial
properties.
primary
advantage
of
C.
green
is
that
it
serves
dual
purpose—both
solvent.
This
eliminates
need
for
additional
to
create
homogeneous
redox
mixture
oxidant
experimental
procedure
.
X-ray
diffraction
confirmed
existence
Ag
bunsenite
form
rhombohedral
structure
with
simple
cubic
system,
particles
sized
31–44
nm.
Energy-dispersive
spectroscopy
revealed
Ni,
O
weight
percentages
48.2,
44.5
7.3%,
respectively.
photoelectron
formation
nanostructure.
UV–visible
spectrometry
showed
reduced
band
gap
energy
(3.03–2.87
eV)
compared
bare
(3.21
eV),
red
shift
optical
response
towards
visible
region
after
doping
into
NiO.
0.3
wt%
highest
quantum
efficiency
(0.781)
among
other
synthesized
NPs.
Fourier-transform
infrared
absorption
bands
range
460–900
cm
−1
stretching
vibrations
Ni–O
Ag–O.
Photoluminescence
indicated
concentration
effectively
introduces
donor
levels,
defect
levels
surface
trap
states
within
nanocrystalline
structure,
enhancing
charge
carrier
separation
reducing
recombination.
Scanning
electron
microscopy
voluminous,
porous
morphology
characterized
by
numerous
voids,
resulting
from
release
various
combustible
gases
during
process.
Transmission
images
most
spherical,
irregular
size
well-distributed,
minimal
aggregation
an
average
particle
25.8
BET
analysis
both
exhibited
type
IV
adsorption
isotherms,
indicating
mesoporous
structures
clear
monolayer–multilayer
process,
area
(170
m
g
)
(130
has
demonstrated
promising
evolution
rate
1212
μmol
g⁻¹
under
light
illumination
water/ethanol
system.
trypan
blue
degradation
reaches
up
98%
moderate
stability
reusable
photocatalysis
significantly
enhanced
activity
against
bacterial
strains.
With
the
increasing
demand
for
improved
food
preservation,
conventional
waterproof
packaging
has
proven
inadequate
because
of
its
limited
functionality.
Although
incorporating
features
such
as
antibacterial
and
antioxidant
properties
into
enhances
protection,
it
can
compromise
hydrophobicity
involved
material,
thereby
risk
contamination
from
external
sources.
To
address
this
challenge,
a
robust
reliable
barrier
capable
simultaneously
integrating
multiple
protective
functions
is
required.
This
research
synthesizes
polyphenol
particles
via
metal
ion
coordination
hydrogen
bondings
to
enhance
antimicrobial
properties.
In
addition,
inspired
by
asymmetric
wettability
Janus-structured
lotus
leaves,
study
develops
biomimetic
multifunctional
Janus
electrospun
fibers
electrostatic
spinning.
These
exhibit
exceptional
properties,
including
superhydrophobic,
antifouling,
ultraviolet-blocking,
pH
sensitivity,
antioxidation,
antimicrobial,
freshness
retention
Experiments
mesoscopic
capillary
flow
simulations
elucidate
waterproofing
ability
underlying
mechanisms
fibers,
demonstrating
their
function
hydrophobic
shields
preventing
water
penetration.
Overall,
provides
reference
high-performance
vegetable
preservation.
