Gels,
Journal Year:
2025,
Volume and Issue:
11(4), P. 291 - 291
Published: April 15, 2025
Chitin
and
its
deacetylated
derivative,
chitosan,
are
biopolymers
of
significant
interest
due
to
their
biocompatibility,
biodegradability,
wide-ranging
applications
in
biomedical,
environmental,
industrial
fields.
The
exploitation
crustaceans
as
the
traditional
source
chitosan
raises
concerns
about
overfishing
ecological
sustainability.
Modern
insect
farming,
contrast,
offers
advantages
such
a
circular
insect-based
economy
leading
reduced
carbon
footprint.
This
review
explores
potential
insect-derived
an
alternative,
emphasizing
environmental
benefits
during
production,
functional
properties,
applications.
Several
aspects
key
analytical
techniques
for
chitin
characterization,
including
photometric,
chromatographic,
spectroscopic
methods,
also
discussed.
underscores
versatility
biomedical
applications,
wound
healing
drug
delivery,
well
agriculture,
packaging,
wastewater
treatment.
Frontiers in Chemistry,
Journal Year:
2024,
Volume and Issue:
12
Published: June 19, 2024
Chitosan,
a
biopolymer
obtained
from
chitin,
is
known
for
its
remarkable
adsorption
abilities
dyes,
drugs,
and
fats,
diverse
array
of
antibacterial
characteristics.
This
study
explores
the
extraction
characterization
chitosan
mycelium
Amanita
phalloides
.
The
moisture
content,
ash
water
binding
capacity,
fat
degree
deacetylation
extracted
were
determined.
exhibited
high
yield
70%,
crystallinity
49.07%,
86%,
potent
antimicrobial
properties
against
both
Gram-negative
Gram-positive
bacteria.
also
examined
capabilities
to
remove
methylene
blue
(MB)
dye
by
analysing
specific
factors
like
pH,
reaction
time,
MB
concentration
using
response
surface
model.
highest
removal
was
91.6%
at
pH
6,
time
around
60
min
an
initial
16
ppm.
experimental
design
can
be
applied
other
organic
compounds
such
as
proteins,
fats.
Journal of Molecular Liquids,
Journal Year:
2024,
Volume and Issue:
409, P. 125395 - 125395
Published: June 29, 2024
Many
of
the
most
harmful
pollutants
contained
in
wastewaters
are
hydrophobic
compounds.
Consequently,
selection
suitable
adsorbents
to
remove
Methylene
Blue
(MB),
adopted
as
model
contaminant,
was
carried
out
evaluating
two
alternative
approaches.
First,
nanocomposites
containing
biochar
were
tested
exploit
interaction
between
adsorbent
and
adsorbate.
As
an
approach,
a
nanocomposite
based
on
chitosan,
material
substantially
hydrophilic
though
methyl
groups,
found
allow
adsorption
by
both
hydrogen-bond
interactions.
Both
biochar-
chitosan-
inserted
magnetic
nanoparticles
crosslinking
impregnation
simpler
solid/liquid
separation.
XRD,
FTIR
SEM
analyses
elucidated
properties
nanocomposites,
showing
fraction
be
mainly
composed
maghemite,
with
crystallite
size
about
8
mm.
The
M(H)
curves
showed
pure
superparamagnetic
behaviour
nanoparticles,
larger
moments
comparison
chitosan
(5.8
×
10−20
Am2
against
3.5
Am2).
mechanism
MB
discussed
considering
zero-point
charges
oxidation–reduction
system
molecules.
higher
capacity
shown
lower
range
concentration
(1.57
105
mg/kg)
explained
taking
into
account
overlapping
effects
polar
Kinetics
isotherms
modelling
suggested
multistep
process,
due
different
phases
constituting
nanocomposites.
An
efficient
regeneration
procedure
developed
for
chitosan-based
nanocomposite,
incubation
acetic
acid/ethanol
mixture.
Environmental Claims Journal,
Journal Year:
2024,
Volume and Issue:
36(1), P. 14 - 39
Published: Jan. 2, 2024
Industrial
wastewater
containing
dyes
poses
a
significant
environmental
threat
due
to
their
persistence
and
potential
toxicity.
Adsorption
using
bio-based
materials
offers
promising
sustainable
approach
for
dye
removal.
This
study
investigates
the
effectiveness
of
adsorbents
derived
from
coconut
husk,
banana
peels,
orange
peels
(pretreated
with
formaldehyde
sulfuric
acid)
methylene
blue
(MB)
The
were
characterized
SEM
FTIR.
Batch
adsorption
experiments
conducted
evaluate
MB
removal
efficiency
under
various
conditions
(pH,
dosage,
temperature,
agitation,
contact
time).
results
showed
that
Freundlich
isotherm
model
best
described
equilibrium
data,
indicating
favorable
multilayer
adsorption.
Kinetic
studies
revealed
pseudo-first-order
reaction
an
exceptional
99.94%.
Notably,
R-squared
value
0.99992
signifies
excellent
fit
experimental
data.
These
findings
demonstrate
remarkable
wastewater.
eco-friendly
cost-effective
solution
remediation
in
textile
dyeing
industries,
contributing
cleaner
water
resources.
Journal of biomimetics, biomaterials and biomedical engineering,
Journal Year:
2024,
Volume and Issue:
65, P. 67 - 80
Published: July 23, 2024
In
view
of
the
growing
concern
over
threat
antibiotic
resistance
and
bacterial
infections,
this
study
evaluated
antimicrobial
performance
characteristics
chitosan/polyvinyl
alcohol
(PVA)
nanofibers
incorporated
with
Methylene
Blue
(MB).
Following
fabrication
chitosan/PVA
loaded
different
MB
concentrations
via
electrospinning,
samples
were
characterised
through
Field-emission
Scanning
Electron
Microscopy
(FESEM),
Fourier
Transform
Infrared
(FTIR)
spectroscopy,
leaching
tests.
Finally,
inhibition
level
was
assessed
disc
diffusion
method.
Based
on
results,
MB-integrated
exhibited
a
nanoscale
morphology,
FTIR
confirmed
presence
MB.
The
findings
also
established
positive
correlation
between
concentration
intensity.
Furthermore,
optimal
efficacy
against
Escherichia
coli
achieved
by
chitosan/PVA/MB
(5
wt.%)
sample
2-min
laser
exposure,
which
recorded
significant
zone
8.65
mm.
conclusion,
demonstrated
potent
properties
E.
,
suggesting
its
potential
integration
in
electrospun
for
combating
infections
photodynamic
therapy.
