Antibiotics,
Год журнала:
2024,
Номер
13(10), С. 987 - 987
Опубликована: Окт. 18, 2024
Objectives:
This
study
investigates
the
impact
of
nutrient
availability
on
growth,
adhesion,
and
biofilm
formation
Pseudomonas
aeruginosa
ATCC
27853
under
static
conditions.
Methods:
Bacterial
behaviour
was
evaluated
in
nutrient-rich
Luria–Bertani
(LB)
broth
nutrient-limited
M9
media,
specifically
lacking
carbon
(M9-C),
nitrogen
(M9-N),
or
phosphorus
(M9-P).
adhesion
analysed
microscopically
during
transition
from
reversible
to
irreversible
attachment
(up
120
min)
production/maturation
stages
72
h).
Results:
Results
demonstrated
that
LB
media
supported
bacterial
whereas
nutrient-starved
conditions
halted
with
M9-C
M9-N
inducing
stationary
phases
M9-P
leading
cell
death.
Fractal
analysis
employed
characterise
spatial
distribution
complexity
patterns,
revealing
affected
both
density
architecture,
particularly
M9-C.
In
addition,
live/dead
staining
confirmed
a
higher
proportion
dead
cells
over
time
(at
48
Conclusions:
highlights
how
starvation
influences
dispersion,
offering
insights
into
survival
strategies
P.
resource-limited
environments.
These
findings
should
contribute
better
understanding
dynamics,
implications
for
managing
biofilm-related
infections
industrial
biofouling.
Coatings,
Год журнала:
2024,
Номер
14(5), С. 617 - 617
Опубликована: Май 14, 2024
The
chemical,
electrochemical
and
microbiological
corrosive
degradation
of
metals
is
a
versatile
harmful
problem
that
causes
significant
economic
loss
all
over
the
world.
mitigation
these
undesired
processes
needs
basic
knowledge
on
mechanisms
in
order
to
control
reactions
with
environmentally
acceptable
chemicals
techniques.
This
paper
focuses
up-to-date
possibilities
help
chemical/electrochemical
corrosion
and,
at
same
time,
decrease
deposition
relevant
microorganisms,
as
microbes
biofilms
are
more
dangerous
than
planktonic
cells.
Some
or
coatings
due
their
specific
properties
can
fulfill
multiple
functions;
they
able
caused
by
aggressive
materials
(that
could
be
metabolites
microorganism)
reduce
microbial
adhesion.
These
additives
have
important
application
chemical
industry,
marine
environment,
medical
field,
nanoelectronics,
etc.,
save
energy,
consumption
cost,
efficiency
improved.
All
resolutions
will
brought
into
prominence
when
(either
dissolved
form
coatings/nanolayers)
effectively
different
appearance
additionally,
adhesion
microbiologically
influenced
corrosion.
Abstract
Biocorrosion,
or
microbiologically
influenced
corrosion,
is
a
phenomenon
where
microorganisms
deteriorate
the
metals.
While
corrosion
generally
considered
undesirable
due
to
its
negative
impact
on
integrity
and
lifespan
of
materials,
significance
biocorrosion
major
problem
because
it
can
cause
material
deterioration,
financial
losses,
environmental
issues.
Conventional
protection
techniques
frequently
use
chemicals,
which
come
with
risks
human
health
environment.
Biosurfactants
are
surface
tension-reducing
agents
low
molecular
weight
that
attract
many
researchers
industrialists
their
excellent
chemical
properties
stability
at
extreme
temperatures,
pH,
under
alkaline
conditions.
These
compounds
reduce
tension
liquids,
leading
improved
wetting
spreading
metal
surfaces.
This
help
create
more
uniform
protective
layer,
preventing
accumulation
corrosive
agents.
review
explores
different
types
biosurfactants,
include
lipopeptides,
glycolipids,
phospholipids,
etc.,
how
they
work
prevent
corrosion.
The
investigation
biosurfactants
in
not
only
addresses
concerns
but
also
holds
promise
for
innovation
development
efficient
long-lasting
mitigation
strategies
variety
substrates,
given
growing
demand
green
sustainable
technolo
gies.
Journal of Materials Research and Technology,
Год журнала:
2024,
Номер
32, С. 2244 - 2254
Опубликована: Авг. 14, 2024
In
the
current
study,
corrosion
behavior
of
HSLA-65
steel
was
investigated
in
a
simulated
marine
environment
inoculated
with
P.
aeruginosa.
electrochemical
measurements,
negative
shift
OCP,
lower
values
potential,
pitting
and
increased
density
biotic
medium
signified
its
low
resistance
presence
The
observation
surface
morphology
revealed
biofilm
formation
on
aeruginosa-inoculated
culture
medium,
which
significantly
accelerated
steel.
pit
observed
about
3.9
times
deeper
than
sterile
medium.
addition,
weight
loss
2.4
higher
compared
to
that
These
findings
suggest
aeruginosa
environment.
Vietnam Journal of Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 31, 2024
Abstract
Mild
steel
(MS)
is
a
widely
used
type
of
because
its
different
types
qualities
like
versatility,
affordability,
and
ease
modification.
On
the
other
hand,
vulnerability
to
corrosion
may
somewhat
detract
from
merits.
To
mitigate
impacts
various
techniques
are
applied.
The
use
inhibitors
remains
one
most
effective
strategies
prevent
corrosion,
especially
in
environments
where
sustainability
increasingly
important.
In
this
study,
we
evaluated
corrosion‐inhibiting
properties
Boerhaavia
diffusa
(BHD)
root
extract
concentrations
(1–6%)
on
mild
an
acidic
solution
(0.1
M
H
2
SO
4
).
characterize
functional
groups
present
BHD
extract,
Fourier‐transform
infrared
spectroscopy
(FTIR)
was
employed.
A
combination
methods,
including
weight
loss
measurements,
electrochemical
polarization,
impedance
(EIS),
metallurgical
research
microscopy
(MRM),
scanning
electron
(SEM),
were
assess
effectiveness
inhibition.
showed
maximum
inhibition
efficiency
(IE)
86.58%
charge
transfer
resistance
(
R
ct
)
308
Ω
cm
recorded
for
6%
concentration
at
25
°C.
This
study
carried
out
25,
35
45
revealed
that
excellent
green
inhibitor.
