International Journal of Environmental Research and Public Health,
Journal Year:
2023,
Volume and Issue:
20(2), P. 1173 - 1173
Published: Jan. 9, 2023
The
increasing
consumption
of
phthalates
(PAEs),
along
with
their
high
toxicity
and
mobility,
poses
a
threat
to
the
environment.
This
study
presents
initial
data
on
contents
six
priority
PAEs
in
water
lakes
located
eastern
shore
Lake
Baikal-Arangatui,
Bormashevoe,
Dukhovoe,
Kotokel,
Shchuchye.
mean
total
concentrations
Arangatui
Bormashevoe
(low
anthropogenic
load)
were
comparable
those
Kotokel
(medium
load,
17.34
µg/L)
but
significantly
higher
(p
<
0.05)
than
Dukhovoe
Shchuchye
(high
10.49
2.30
µg/L,
respectively).
DBP
DEHP
main
all
samples.
content
was
quite
high,
at
some
sampling
sites
it
exceeded
MACs
established
by
Russian,
U.S.
EPA,
WHO
regulations.
assessment
showed
that
there
is
no
potential
risk
humans
associated
presence
drinking
water.
However,
levels
DEHP,
DBP,
DnOP
pose
sensitive
aquatic
organisms,
as
shown
calculated
quotients
(RQs).
It
assumed
origin
studied
both
biogenic.
Biology,
Journal Year:
2022,
Volume and Issue:
11(10), P. 1390 - 1390
Published: Sept. 23, 2022
Endophytic
bacteria
are
plant-beneficial
with
a
broad
host
range.
They
provide
numerous
benefits
to
their
hosts,
helping
them
tolerate
several
biotic
and
abiotic
stresses.
An
interest
has
recently
been
developed
in
endophytic
which
producing
bioactive
compounds
that
contribute
the
biological
control
of
various
phytopathogens.
This
research
paper
aimed
investigate
potentiality
new
local
strains
such
as
Bacillus
amyloliquefaciens
B.
velezensis
production
antimicrobial
metabolites
associated
biocontrol
Alternaria
sp.,
cause
serious
diseases
affect
important
vegetable
crops
Egypt.
Twenty-five
isolates
were
obtained
from
different
plants
cultivated
El-Sharkia
Governorate,
Dual
culture
technique
was
used
evaluate
bacterial
isolates'
antagonistic
against
sp.
Helminthosporium
The
most
active
selected
for
further
screening.
antifungal
activity
isolate
assessed
vivo
on
pepper
seedlings
agent
A
significant
recorded
C1
T5
endophyte
discs
showed
highest
inhibitory
effect
at
4.7
3.1
cm,
respectively,
3.9
4.0
respectively.
identified
16S
rRNA
sequence
submitted
NCBI
GenBank
database
accession
numbers:
MZ945930
MZ945929
velezensis,
deformity
pathogenic
fungal
mycelia
studied
under
stress
bacteria.
filtrates
extracted
solvents,
results
indicated
hexane
efficient.
Gas
Chromatography-Mass
Spectrometry
revealed
Bis
(2-ethylhexyl)
phthalate,
ester,
N,N-Dimethyldodecylamine
major
constituents
crude
extracts
velezensis.
infection
caused
disease
incidence,
leading
high
reduction
plant
height
fresh
dry
weights
plants.
With
application,
DI
significantly
diminished
compared
infected
plants,
resulting
an
increase
morphological
parameters.
Our
findings
allow
chemical
pesticide
use
some
diseases.
Environment International,
Journal Year:
2023,
Volume and Issue:
178, P. 108054 - 108054
Published: June 20, 2023
Microbial
degradation
has
been
confirmed
as
effective
and
environmentally
friendly
approach
to
remediate
phthalates
from
the
environment,
hydrolase
is
an
element
for
contaminant
degradation.
In
present
study,
a
novel
dibutyl
phthalate
(DBP)-hydrolyzing
carboxylesterase
(named
PS06828)
Pseudomonas
sp.
PS1
was
heterogeneously
expressed
in
E.
coli,
which
identified
new
member
of
lipolytic
family
VI.
Purified
PS06828
could
efficiently
degrade
DBP
with
wide
range
temperature
(25-37
°C)
pH
(6.5-9.0).
Multi-spectroscopy
methods
combined
molecular
docking
were
employed
study
interaction
DBP.
Fluorescence
UV-visible
absorption
spectra
revealed
simultaneous
presence
static
dynamic
component
fluorescence
quenching
by
Synchronous
circular
dichroism
showed
inconspicuous
alteration
micro-environmental
polarity
around
amino
acid
residues
but
obvious
increasing
α-helix
reducing
β-sheet
random
coil
protein
conformation.
Based
on
information
exact
binding
sites
provided
docking,
catalytic
mechanism
mediated
key
(Ser113,
Asp166,
His197)
proposed
subsequently
site-directed
mutagenesis.
The
results
can
strengthen
our
mechanistic
understanding
VI
esterase
involved
hydrolysis
phthalic
esters,
provide
solid
foundation
further
enzymatic
modification.
Molecules,
Journal Year:
2025,
Volume and Issue:
30(5), P. 1167 - 1167
Published: March 5, 2025
The
hydrothermal
carbonization
(HTC)
of
biomass
presents
a
sustainable
approach
for
waste
management
and
production
value-added
materials
such
as
hydrochar,
which
holds
promise
an
adsorbent
support
matrix
bacterial
immobilization
applied,
e.g.,
bioremediation
processes
sites
contaminated
with
phthalate
ester
plasticizers
diethyl
(DEP).
In
the
present
study,
hydrochar
was
synthesized
from
vine
shoots
(VSs)
employing
following
parameters
during
HTC
process:
260
°C
30
min
1:10
(w/v)
biomass-to-water
ratio.
resulting
(VSs-HC)
characterized
porosity,
elemental
composition,
structural
properties
using
Scanning
Electron
Microscopy
(SEM),
Energy-Dispersive
X-ray
Spectroscopy
(EDX),
Raman
spectroscopy.
Elemental
analysis
confirmed
presence
key
elements
in
VSs
structure,
essential
char
formation
process.
VSs-HC
exhibited
macroporous
structure
(>0.5
μm),
facilitating
(DEP)
adsorption,
adhesion,
biofilm
formation.
Adsorption
studies
showed
that
achieved
90%
removal
rate
4
mM
DEP
within
first
hour
contact.
Furthermore,
VS-HC
tested
consortium
(Pseudomonas
spp.
Microbacterium
sp.)
known
to
degrade
DEP.
immobilized
on
demonstrated
enhanced
tolerance
toxicity,
degrading
76%
8
24
h,
compared
14%
by
planktonic
cultures.
This
study
highlights
VSs-HC's
potential
cost-effective
material
environmental
bioremediation,
offering
cell
viability,
improved
formation,
efficient
plasticizer
removal.
These
findings
provide
pathway
mitigating
pollution
through
scalable
low-cost
solutions.
