Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 13, 2024
Antimicrobial
and
antioxidant
packaging
films
play
a
crucial
role
in
extending
food
shelf
life,
maintaining
quality,
enhancing
safety
by
inhibiting
microbial
growth
slowing
oxidation
processes.
However,
most
commercial
preservative
suffer
from
limited
antimicrobial
properties.
Moreover,
these
are
made
petroleum-based
materials
that
degrade
into
microplastics,
resulting
environmental
contamination
potential
health
risks
for
humans.
Herein,
an
antibacterial
film
(CS-SAP@R)
is
developed
integrating
star-shaped
amphiphilic
polypeptides
(SAP)
resveratrol
(R)
the
chitosan
(CS)
matrix.
The
incorporation
of
SAP
not
only
effectively
addresses
existing
compatibility
issues
between
highly
hydrophobic
water-soluble
CS
film,
but
also
significantly
enhances
properties
CS.
Additionally,
well-integrated
molecules
endow
with
superior
Furthermore,
CS-SAP@R
has
achieved
bacterial
killing
rates
97.31%
against
E.
coli
99.05%
S.
aureus.
enhanced
characteristics
contribute
to
its
exceptional
preservation
performance,
life
perishable
products
≈3
days
when
stored
at
4
°C.
These
remarkable
attributes
underscore
benefits
polypeptide-based
biopolymers
demonstrate
applicability
safeguarding
products.
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.
Foods,
Journal Year:
2024,
Volume and Issue:
13(12), P. 1895 - 1895
Published: June 16, 2024
In
this
work,
novel
nanocomposite
films
based
on
babassu
coconut
mesocarp
and
zinc
oxide
nanoparticles
(ZnO
NPs),
synthesized
by
a
green
route,
were
produced
for
application
as
food
packaging
films.
The
prepared
using
the
casting
method
containing
different
contents
of
ZnO
NPs
(0
wt%,
0.1
0.5
1.0
wt%).
characterized
Fourier-transform
infrared
spectroscopy
(FTIR),
X-ray
diffraction
(XRD),
thermogravimetric
analysis
(TGA),
scanning
electron
microscopy
(SEM),
instrumental
color
analysis,
optical
properties.
water
vapor
permeability
(WVP)
tensile
strength
also
determined.
antimicrobial
activity
against
cooked
turkey
ham
samples
contaminated
with
Staphylococcus
aureus
was
investigated.
results
showed
that
incorporating
into
matrices
influenced
structure
biopolymer
chains
BM/ZnO-0.5
film
(0.5
wt%
NPs)
better
thermal,
mechanical,
WVP
Furthermore,
synergistic
effect
in
improved
properties
material,
reducing
microbial
count
S.
stored
under
refrigeration
7
days.
Thus,
study
promising
materials
processed
foods.
