Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
478, P. 135475 - 135475
Published: Aug. 13, 2024
This
study
aims
to
deepen
knowledge
of
the
biodegradation
plastics,
focusing
on
polypropylene
(PP)
fabric
from
surgical
masks
and
polystyrene
(PS)
by
larvae
Zophobas
atratus
as
well
specialized
bacterial
consortia
their
gut,
which
were
obtained
in
different
enrichment
conditions
(aerobic,
anaerobic,
presence
or
absence
combined
nitrogen).
Plastics
ingested
Spain
did
not
show
any
signs
oxidation
but
only
limited
depolymerization,
preferably
lowest
molecular
weight
chains.
Gut
microbiota
composition
changed
an
effect
plastic
feeding.
Such
differences
more
evident
cultures,
where
polymer
type
influenced
than
culture
conditions,
with
increase
nitrogen-fixers
anaerobic
conditions.
PS
PP
degradation
cultures
was
confirmed
under
aerobic
respirometry
tests,
favouring
a
active
degradation.
In
addition,
exposure
selected
aerobiosis
induced
surface
PS.
possibly
indicates
that
biochemical
routes
are
being
utilized
gut
degrade
polymer.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: Jan. 7, 2025
Abstract
Plastic
pollution
is
a
significant
environmental
challenge
of
contemporary
age.
Polystyrene
(PS),
among
the
most
commonly
used
plastic
polymers
worldwide,
highly
durable
and
difficult
to
degrade.
Despite
various
disposal
strategies,
PS
continues
impact
biodiversity,
human
health,
ecosystems.
Recently,
scientific
community
has
focused
on
potential
role
microorganisms
for
biodegradation,
particularly
those
from
gut
plastivorous
insects.
In
previous
study,
three
bacterial
strains,
each
representing
distinct
taxonomic
group
(
Klebsiella
,
Pseudomonas
Stenotrophomonas
),
were
isolated
Alphitobius
diaperinus
larvae
after
rearing
diet
enriched
in
medium
with
as
sole
carbon
source.
The
sp.
strain,
here
identified
S.
indicatrix
showed
greatest
degradation.
present
study
investigates
genetic
profile
newly
strain
DAI2m/c
through
genome
sequencing,
identify
enzyme-encoding
genes
involved
intracellular
metabolic
pathways
responsible
biodegradation
styrene
monomer.
Our
findings
indicate
that
encodes
all
enzymes
required
one
two
recognized
degradation
pathways,
suggesting
its
ability
convert
into
byproducts
are
then
utilized
cellular
energy
production.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(6), P. 1255 - 1255
Published: March 11, 2025
In
recent
years,
vast
amounts
of
plastic
waste
have
been
released
into
the
environment
worldwide,
posing
a
severe
threat
to
human
health
and
ecosystems.
Despite
partial
success
traditional
management
technologies,
their
limitations
underscore
need
for
innovative
approaches.
This
review
provides
comprehensive
overview
advancements
in
chemical
biological
technologies
converting
utilizing
waste.
Key
topics
include
technical
parameters,
characteristics,
processes,
reaction
mechanisms
underlying
these
emerging
technologies.
Additionally,
highlights
importance
conducting
economic
analyses
life
cycle
assessments
offering
valuable
insights
establishing
robust
foundation
future
research.
By
leveraging
literature
from
last
five
this
explores
approaches,
such
as
hydrolysis,
hydrogenolysis,
alcoholysis,
ammonolysis,
pyrolysis,
photolysis,
which
break
down
high-molecular-weight
macromolecules
oligomers
or
small
molecules
by
cracking
depolymerizing
specific
groups
within
molecules.
It
also
examines
methods,
including
microbial
enzymatic
degradation,
employs
microorganisms
enzymes
convert
through
degradation
assimilation
mechanisms.
The
concludes
discussing
research
directions
focused
on
addressing
technological,
economic,
scalability
challenges
with
strong
commitment
promoting
sustainable
solutions
achieving
lasting
environmental
impact.
