Journal of Agricultural and Food Chemistry,
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 2, 2023
Thermal
processing
of
food
plays
a
fundamental
role
in
everyday
life.
Whereas
most
researchers
study
thermal
processes
directly
the
matrix,
molecular
information
form
non-
and
semivolatile
compounds
conveyed
by
vaporous
emissions
is
often
neglected.
We
performed
metabolomics
from
96
different
items
to
define
interaction
between
processed
matrix
released
metabolites.
Untargeted
profiling
vapor
samples
revealed
matrix-dependent
spaces
that
were
characterized
Fourier-transform
ion
cyclotron
resonance–mass
spectrometry
ultra-performance
liquid
chromatography–mass
spectrometry.
degradation
products
peptides
amino
acids
can
be
used
for
differentiation
animal-based
plant-based
food,
which
generally
secondary
plant
metabolites
or
carbohydrates.
Further,
heat-sensitive
indicators
discussed
background
Maillard
reaction.
These
reveal
contain
dense
layer
suitable
deep
insights
into
composition
control
cooking
based
on
emissions.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(3), P. 1563 - 1576
Published: Jan. 6, 2024
Uncertain
chemical
mechanisms
leading
to
brown
carbon
(BrC)
formation
affect
the
drivers
of
radiative
effects
aerosols
in
current
climate
predictions.
Herein,
aqueous-phase
reactions
methylglyoxal
(MG)
and
typical
reduced
nitrogen
species
(RNSs)
are
systematically
investigated
by
using
combined
quantum
calculations
laboratory
experiments.
Imines
diimines
identified
from
mixtures
methylamine
(MA)
ammonia
(AM)
with
MG,
but
not
dimethylamine
(DA)
MG
mixture
under
acidic
conditions,
because
deprotonation
DA
cationic
intermediates
is
hindered
amino
groups
occupied
two
methyl
groups.
It
leads
N-heterocycle
(NHC)
+
MA
(MGM)
AM
(MGA)
reaction
systems
N-containing
chain
oligomer
(MGD)
system.
Distinct
product
attributed
electrostatic
attraction
steric
hindrance,
which
regulated
RNSs.
The
light
absorption
adverse
NHCs
also
strongly
related
Our
finding
reveals
that
BrC
mainly
contributed
RNSs
less
groups,
have
more
abundant
broad
sources
urban
environments.
ACS Earth and Space Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 3, 2025
Secondary
brown
carbon
is
an
important
component
of
the
atmosphere.
The
contribution
secondary
atmospheric
from
reaction
methylglyoxal
(MG)
with
ammonium
sulfate
(AS)
has
been
demonstrated
in
laboratory.
However,
mechanism
still
unclear,
especially
influenced
by
other
factors,
for
example,
inorganic
salt.
In
this
study,
effect
soluble
iron
salt
on
between
MG
and
AS
was
investigated
through
chemical
analysis
methods,
including
optical
molecular
probes.
results
indicate
that
ferrous
may
promote
MG–AS
accelerate
formation
carbon.
Ferrous
exhibits
a
higher
catalytic
activity
than
ferric
does.
Moreover,
indicates
Fe(II)
true
catalyst,
rate
constant
13
times
uncatalyzed
reaction,
while
Fe(III)
due
to
its
reduction
MG.
addition,
complex
aqueous
phase
identified.
Toxics,
Journal Year:
2025,
Volume and Issue:
13(4), P. 236 - 236
Published: March 24, 2025
The
co-occurrence
of
fine
particulate
matter
(PM2.5)
and
ozone
has
emerged
as
a
critical
environmental
challenge
in
recent
years.
individual
harmful
impacts
PM2.5
exposure
have
been
well
studied;
however,
their
combined
toxicity
under
co-exposure
conditions
remains
mechanistically
undefined.
This
paper
provides
an
extensive
evaluation
the
current
pollution
levels,
epidemiological
investigation,
new
findings
on
toxicological
mechanisms
to
ozone.
synergistic
depends
different
factors,
including
physicochemical
properties
PM2.5,
dose
duration
exposure,
specific
target
organs.
Through
research,
we
identified
main
targets
toxic
responses
summarized
mechanisms.
Given
research
priorities,
there
is
urgent
need
improve
scientific
regarding
with
priority
given
characterizing
while
updating
relevant
guidelines
standards.
Biomedicines,
Journal Year:
2023,
Volume and Issue:
11(9), P. 2427 - 2427
Published: Aug. 30, 2023
Atrial
fibrillation
(AF)
is
the
most
common
type
of
cardiac
rhythm
disorder.
Recent
clinical
and
experimental
studies
reveal
that
environmental
pollutants,
including
organophosphorus-organochloride
pesticides
air
pollution,
may
contribute
to
development
arrhythmias
AF.
Here,
we
discussed
unifying
cascade
events
explain
role
pollutant
exposure
in
Following
ingestion
inhalation
pollution-promoting
toxic
compounds,
damage-associated
molecular
pattern
(DAMP)
stimuli
activate
inflammatory
response
oxidative
stress
negatively
affect
respiratory,
cognitive,
digestive,
systems.
Although
detailed
mechanisms
underlying
association
between
incidence
AF
are
not
completely
elucidated,
some
reports
fundamental
research
data
support
idea
poisoning
can
provoke
perturbed
ion
channel
function,
myocardial
electrical
abnormalities,
decreased
action
potential
duration,
slowed
conduction,
contractile
dysfunction,
fibrosis,
Atmospheric Environment,
Journal Year:
2024,
Volume and Issue:
333, P. 120660 - 120660
Published: June 15, 2024
Air
quality
in
rural
areas
results
from
the
crossing
of
aged
air
masses
transported
urban
with
local
emissions
dominated
by
agriculture
and
vegetation.
The
result
is
a
complex
mixture
primary
secondary
atmospheric
species,
coming
varied
sources
geographical
areas.
We
implemented
methodology
for
deconvoluting
determining
origins
main
aerosol
impacting
typical
area
northern
France.
A
one-year
field
campaign
was
conducted
site
located
between
Paris
Brussels
March
2018
to
February
2019.
Hourly-based
observations
inorganic
organic
precursor
gases
PM2.5
speciation
were
collected
using
on-line
instrumentation.
annual
concentrations
12.2
±
9.23
μg
m−3
explained
four
extracted
through
positive
matrix
factorization
analyses:
combustion
(40.2%),
NO3-rich
(26.8%),
SO4-rich
(18%)
mixed
marine
(15%).
SIA-rich
drive
85
%
yearly
mass
variability.
factor
most
prominent
during
winter
(53.3%
mass)
due
high
contributions
regional
transport
biomass
burning
pollutants
(winter
OC/EC
=
6.0;
OC-to-OM
2.05).
In
summer,
it
likely
driven
production
agricultural
waste
events
(summer
8.6;
1.85).
Comparing
other
sites,
we
observed
strong
background
carbonaceous
particles
regardless
typology.
SIA
fraction
source
compared
source.
spring,
dominate
(36.9%)
intense
activity.
temporal
variability
processes
Benelux
North-to-South
gradient
decreasing
concentrations.
minor
proportion
NH4NO3
seems
be
effects
morning
dew
photochemical
oxidation
NO2
afternoon.
HNO3
appears
limiting
formation.
toxicity
low
population
densities
should
not
only
addressed
based
on
concentration,
but
also
considering
chemical
composition
as
people
environments
are
exposed
aerosols
triggered
NH3
excess.
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
284, P. 116923 - 116923
Published: Aug. 29, 2024
The
detrimental
effects
of
air
pollution
on
the
respiratory
system
are
well
documented.
Previous
research
has
established
a
correlation
between
pollutant
concentration
and
frequency
outpatient
visits
for
influenza-like
illness.
However,
studies
investigating
variations
in
infection
among
different
influenza
subtypes
remain
sparse.
We
aimed
to
determine
levels
Sichuan
Province,
China.
