Journal of Hazardous Materials,
Год журнала:
2024,
Номер
478, С. 135475 - 135475
Опубликована: Авг. 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.
Frontiers of Environmental Science & Engineering,
Год журнала:
2024,
Номер
18(6)
Опубликована: Апрель 30, 2024
Abstract
Insects
damaging
and
penetrating
plastic
packaged
materials
has
been
reported
since
the
1950s.
Radical
innovation
breakthroughs
of
biodegradation
have
initiated
discovery
plastics
by
Tenebrio
molitor
larvae
in
2015
followed
Galleria
mellonella
2017.
Here
we
review
updated
studies
on
insect-mediated
plastics.
Plastic
insect
larvae,
mainly
some
species
darkling
beetles
(Tenebrionidae)
pyralid
moths
(Pyralidae)
is
currently
a
highly
active
potentially
transformative
area
research.
Over
past
eight
years,
publications
increased
explosively,
including
discoveries
ability
different
to
biodegrade
plastics,
performance,
contribution
host
microbiomes,
impacts
polymer
types
their
physic-chemical
properties,
responsible
enzymes
secreted
gut
microbes.
To
date,
almost
all
major
polyethylene
(PE),
polypropylene
(PP),
polyvinyl
chloride
(PVC),
terephthalate
(PET),
polyurethane
(PUR),
polystyrene
(PS)
can
be
biodegraded
T.
ten
other
representing
Tenebrionidae
Pyralidae
families.
The
processes
are
symbiotic
reactions
or
performed
synergistic
efforts
both
gut-microbes
rapidly
depolymerize
with
hourly
half-lives.
digestive
ezymens
bioreagents
screted
insects
play
an
essential
role
plasatic
certain
New
research
itself,
transcriptomes,
proteomes
metabolomes
evaluated
mechanisms
insects.
We
conclude
this
discussing
future
perspectives
Abstract
Biodegradation
is
a
sustainable
strategy
to
address
global
microplastics
(MPs)
pollution
but
constrained
by
the
lack
of
efficient
degrading
microbes
and
effective
tools
harness
them.
Here,
we
developed
function-driven
single-cell
approach
precisely
identify
recover
MPs-degrading
microorganisms
from
complex
microbiota
integrating
isotope-labeled
Raman
spectroscopy
with
targeted
cell
sorting,
sequencing
culturing.
Using
heavy
water
MPs
as
sole
carbon
source,
effectively
identified
active
capable
multiple
types
insect
gut
microbiota.
Raman-guided
sorting
revealed
seven
previously
unrecognized
polystyrene
degraders
mapped
key
enzymes
involved
in
each
degradation
stage.
Furthermore,
live-cell
enabled
cultivation
rare
highly
often
missed
conventional
methods.
This
“screen-first,
culture-second”
offers
powerful
scalable
platform
accelerate
biodegradation
supports
development
microbial
solutions
mitigate
plastic
pollution.
