Environmental Science & Technology,
Journal Year:
2013,
Volume and Issue:
47(9), P. 4536 - 4543
Published: April 1, 2013
In
the
present
study,
a
novel
and
efficient
technology
based
on
use
of
an
oxidative
enzyme
was
developed
to
perform
continuous
removal
estrogenic
compounds
from
polluted
wastewaters.
A
2
L
enzymatic
membrane
reactor
(EMR)
successfully
operated
for
100
h
with
minimal
requirements
laccase
transformation
estrone
(E1),
17β-estradiol
(E2),
17α-ethinylestradiol
(EE2)from
both
buffer
solution
real
wastewater
(filtered
secondary
effluent).
When
experiments
were
performed
at
high
low
concentrations
target
compounds,
4
mg/L
μg/L,
not
only
yields
(80-100%)
but
also
outstanding
reduction
estrogenicity
(about
84-95%)
attained.
EMR
applied
treatment
municipal
wastewaters
environmental
different
(0.29-1.52
ng/L),
excellent
results
achieved
indicating
efficiency
potential
system.
second
goal
this
study
relied
identification
products
elucidate
catalytic
mechanism
estrogens'
by
laccase.
The
formation
dimers
trimers
E1,
E2,
EE2,
as
well
decomposition
E2
into
E1
laccase-catalyzed
treatment,
has
been
demonstrated
liquid
chromatography
atmospheric
pressure
chemical
ionization
(LC-APCI)
analysis
confirmed
determination
accurate
masses
through
electrospray
time-of-flight
mass
spectrometry
(LC-ESI-TOF).
Dimeric
EE2
found
even
when
operating
concentrations.
Moreover,
reaction
pathways
proposed.
Frontiers in Microbiology,
Journal Year:
2016,
Volume and Issue:
7
Published: April 25, 2016
Exposure
to
mycotoxins,
secondary
metabolites
produced
by
fungi,
may
infer
serious
risks
for
animal
and
human
health
lead
economic
losses.
Several
approaches
reduce
these
mycotoxins
have
been
investigated
such
as
chemical
removal,
physical
binding
or
microbial
degradation.
This
review
focuses
on
the
degradation
transformation
of
with
specific
attention
actual
detoxification
mechanisms
mother
compound.
Furthermore,
based
similarities
in
structure
between
groups
environmentally
recalcitrant
compounds,
known
biodegradation
pathways
degrading
organisms
which
hold
promise
are
presented.
BioMed Research International,
Journal Year:
2012,
Volume and Issue:
2013, P. 1 - 10
Published: Dec. 24, 2012
Sex
steroid
hormones
play
important
physiological
roles
in
reproductive
and
nonreproductive
tissues,
including
immune
cells.
These
exert
their
functions
by
binding
to
either
specific
intracellular
receptors
that
act
as
ligand-dependent
transcription
factors
or
membrane
stimulate
several
signal
transduction
pathways.
The
elevated
susceptibility
of
males
bacterial
infections
can
be
related
the
usually
lower
responses
presented
compared
females.
This
dimorphic
sex
difference
is
mainly
due
differential
modulation
system
through
control
proinflammatory
anti-inflammatory
cytokines
expression,
well
Toll-like
(TLRs)
expression
antibody
production.
Besides,
also
affect
metabolism,
growth,
virulence
pathogenic
bacteria.
In
turn,
pathogenic,
microbiota,
environmental
bacteria
are
able
metabolize
degrade
compounds.
All
these
data
suggest
a
key
role
bacterial-host
interactions.
Critical Reviews in Environmental Science and Technology,
Journal Year:
2015,
Volume and Issue:
46(1), P. 1 - 59
Published: July 28, 2015
Endocrine-disrupting
compounds
(EDCs),
represented
by
steroidal
estrogens
(estrone
(E1),
17β-estradiol
(E2),
estradiol
(E3),
and
17α-ethinylestradiol
(EE2)
xenoestrogens
(bisphenol
A
(BPA)
nonylphenol
(NP)),
are
pollutants
with
estrogenic
activity
at
very
low
concentrations
emerging
as
a
major
concern
for
water
quality.
They
enter
into
aqueous
environment
mainly
through
discharge
of
wastewater
treatment
plant
(WWTP)
effluents.
The
paper
completely
reviews
recent
studies
on
the
occurrence
six
categories
EDCs
in
different
environment,
namely
surface
water,
groundwater,
drinking
WWTPs
all
over
world.
Furthermore,
due
to
high
bioactivity,
ubiquitous
distribution,
potential
ecological
effects,
persistence
EDCs,
work
summarizes
current
knowledge
their
bacterial
biodegradation,
which
is
considered
be
an
efficient
promising
method
removing
EDCs.
wide
range
bacteria
isolated
from
various
environments
affiliated
kinds
genera
degradation
powers
collected
this
review
order
select
specific
strains
adapting
well
local
conditions
bioremediation
freshwater,
seawater,
soil,
sediment
or
levels
Finally,
it
emphasizes
need
further
research
future
tasks
that
emerge
data
gathered
here.
