Abstract
Papain
is
widely
used
in
food,
drug,
and
bioactive
peptide
production
must
be
immobilized
onto
carriers
with
biocompatibility.
Dialdehyde
starch
(DAS)
can
a
good
biocompatible
cross‐linker
according
to
its
active
aldehyde
groups.
In
the
present
study,
magnetic
nanoparticles
dialdehyde
(MDASN),
synthesized
by
DAS
Fe
3
O
4
(Fe‐MNP),
are
successfully
immobilize
papain
improve
enzymic
activity.
The
structure
morphology
of
DAS,
MDASN,
(papain‐MDASN)
characterized
detailly.
like
flat
ball,
that
Fe‐MNP
papain‐MDASN
spherical
clumpy.
particle
size
small,
resulting
large
surface
electrostatic
effect
partial
agglomeration.
Enzymic
activity
studies
exhibit
on
MDASN
represents
better
temperature
resistance,
alkaline
thermal
stability,
reusability,
recovery
up
68.21%.
(MDASN)
may
enhance
potential
application
processes.
ACS Omega,
Год журнала:
2024,
Номер
9(47), С. 46698 - 46732
Опубликована: Ноя. 14, 2024
Immobilization
of
lipases
by
physical
adsorption
improves
their
stability,
recovery,
and
reusability
in
biotechnological
processes.
The
present
review
provides
an
advanced
bibliometric
analysis
a
comprehensive
overview
research
progress
this
field.
By
searching
Web
Science,
39,575
publications
were
analyzed,
325
relevant
articles
selected.
Key
journals,
countries,
institutions,
authors
identified.
most
cited
focus
on
biofuel
production
industrial
applications.
revealed
four
themes
with
the
biofuel.
method
is
effective
when
appropriate
support
used.
Despite
decrease
patent
applications,
interest
remains
high.
Future
studies
should
optimizing
materials
exploring
new
applications
technique.
detailed
understanding
immobilization
adsorption.
Proceedings of universities Applied chemistry and biotechnology,
Год журнала:
2025,
Номер
14(4), С. 472 - 481
Опубликована: Янв. 13, 2025
The
present
study
examines
reaction
products
in
the
solution
of
antibiotic
cefotaxime
with
succinic
anhydride,
maleic
anhydride
copolymer,
and
dialdehyde
wheat
starch.
is
shown
to
produce
succinamide;
likely
bind
via
noncovalent
intermolecular
interactions.
An
azomethine
derivative
oxidized
polysaccharide
was
found
form;
molar
ratio
initial
glucosidic
units
starch,
unreacted
units,
those
bonded
through
linkage
0.204:0.606:0.19.
Drug
release
from
obtained
matrix
form
studied
different
biorelevant
media
(saline,
phosphate
buffer,
Tris-HCl
buffer).
amount
released
ten
hours
approach
100%.
Its
proceeds
two
phases.
In
first
phase
(1–2
h),
35
(pH
7.14)
70%
7.4–8.0)
drug
substance
into
solution,
followed
by
a
significant
decrease
rate.
processing
kinetic
data
using
first-order
Higuchi
equations
revealed
consistency
both
models.
rate
constants
increase
proportion
pH.
It
assumed
that
first,
bond
hydrolysis
occurs
molecules
polymer
matrix;
then,
macromolecules
starch
residing
on
surface
are
dissolved;
due
an
viscosity
layer
surrounding
conjugate
particle,
decreases.
general,
as
pseudo-first-order
accompanied
diffusion
processes.
Journal of Applied Polymer Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 7, 2025
ABSTRACT
This
study
assessed
the
biodegradability
of
flexible
film
and
its
components.
The
tests
were
carried
out
under
composting
conditions.
kinetics
carbon
dioxide
production
percentage
biodegradation
measured.
Fourier
Transform
InfraRed
spectroscopy
(FTIR),
Thermo
Gravimetric
Analysis
(TGA),
Scanning
Electron
Microscopy
(SEM)
used
to
changes
films
in
test.
total
organic
(TOC)
was
After
test,
plant
growth
out,
which
included
measurement
chlorophyll
Index
(CI).
results
showed
that
film,
ecovio
F2223,
thermoplastic
starch
(TPS)
achieved
92.13%,
93.20%,
96.88%,
respectively,
contrast
polylactic
acid‐PLA
(80.28%).
FTIR
molecular
structures,
mainly
band
crystalline
zones
around
2800–3000
cm
−1
,
deformation
bands
between
1400
1500
amorphous
1200–1000
.
TGA
films,
PLA,
TPS
a
thermal
degradation
350°C,
360°C,
370°C,
320°C,
due
polymeric
structures
degradation.
SEM
micrographs
show
morphology
change
on
surfaces
after
evidencing
action
microorganisms.
compost
stability
by
Gemination
CI
no
presented
significative
differences.
