Journal of Agricultural and Food Chemistry,
Journal Year:
2023,
Volume and Issue:
71(16), P. 6249 - 6267
Published: April 14, 2023
Novel
fungicidal
agents
were
designed
based
on
the
combination
of
two
privileged
scaffolds,
thiohydantoin
and
spirocyclic
butenolide,
which
are
widely
found
in
natural
products.
The
synthesized
compounds
characterized
by
1H
NMR,
13C
high-resolution
electrospray
ionisation
mass
spectrometry.
vitro
antioomycete
activity
evaluation
showed
that
most
exhibited
excellent
inhibitory
activities
against
different
developmental
stages
life
cycle
pathogenic
oomycete
Phytophthora
capsici.
Compound
5j
could
inhibit
mycelial
growth,
sporangium
production,
zoospore
release,
cystospore
germination
significantly
with
EC50
values
0.38,
0.25,
0.11,
0.026
μg/mL,
respectively.
vivo
antifungal/antioomycete
bioassay
results
revealed
series
generally
outstanding
control
efficacies
Pseudoperonospora
cubensis,
5j,
5l,
7j,
7k,
7l
possessed
broad-spectrum
antifungal
test
phytopathogens.
protective
curative
P.
capsici
representative
compound
excellent,
better
than
those
azoxystrobin.
More
prominently,
promoted
biomass
accumulation
root
system
reinforced
cell
wall
callose
deposition.
pronounced
upregulation
immune
response-related
genes
indicated
active
inhibitor
also
functioned
as
a
plant
elicitor.
Transmission
electron
microscopy
observation
enzyme
demonstrated
mechanism
action
was
to
bind
pivotal
protein,
complex
III
respiratory
chain,
resulted
shortage
energy
supply.
Molecular
docking
appropriately
matched
Qo
pocket
had
no
interaction
commonly
mutated
site
Gly-142,
may
be
significant
benefit
fungicide
resistance
management.
great
advantages
potential
control,
management,
induction
disease
resistance.
A
further
investigation
unique
structure
might
have
direct
implications
for
creation
novel
inhibitors
plant-pathogenic
oomycetes.
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(17), P. 12336 - 12346
Published: Aug. 16, 2022
The
photolysis
of
pesticides
with
different
fluorine
motifs
was
evaluated
to
quantify
the
formation
fluorinated
products
in
buffered
aqueous
systems,
advanced
oxidation
(AOP)
and
reduction
processes
(ARP),
river
water.
Simulated
sunlight
quantum
yields
at
pH
7
were
0.0033,
0.0025,
0.0015,
0.00012
for
penoxsulam,
florasulam,
sulfoxaflor,
fluroxypyr,
respectively.
bimolecular
rate
constants
hydroxyl
radicals
2
5.7
×
1010
M–1
s–1
and,
sulfate
radicals,
1.6
2.6
108
sulfoxaflor
100-fold
lower.
Using
quantitative
19F-NMR,
complete
mass
balances
obtained.
maximum
fluoride
53.4
87.4%
penoxsulam
florasulam
under
ARP
conditions,
6.1
100%
fluroxypyr
AOP
conditions.
Heteroaromatic
CF3
aliphatic
CF2
groups
retained
multiple
photoproducts.
Aryl
F
heteroaromatic
readily
defluorinated
fluoride.
formed
trifluoroacetate
difluoroacetate,
increased
oxidizing
19F-NMR
chemical
shifts
coupling
analysis
provided
information
on
hydrogen
loss
adjacent
bonds
or
changes
chirality.
Mass
spectrometry
results
consistent
observed
products.
These
will
assist
selecting
treatment
specific
design
agrochemicals
reduce
byproduct
formation.
Sensors,
Journal Year:
2024,
Volume and Issue:
24(13), P. 4350 - 4350
Published: July 4, 2024
Water
pollution
greatly
impacts
humans
and
ecosystems,
so
a
series
of
policies
have
been
enacted
to
control
it.
The
first
step
in
performing
is
detect
contaminants
the
water.
Various
methods
proposed
for
water
quality
testing,
such
as
spectroscopy,
chromatography,
electrochemical
techniques.
However,
traditional
testing
require
utilization
laboratory
equipment,
which
large
not
suitable
real-time
field.
Microfluidic
devices
can
overcome
limitations
instruments
become
an
efficient
convenient
tool
analysis.
At
same
time,
artificial
intelligence
ideal
means
recognizing,
classifying,
predicting
data
obtained
from
microfluidic
systems.
based
on
machine
learning
are
being
developed
with
great
significance
next
generation
monitoring
This
review
begins
brief
introduction
algorithms
involved
materials
used
fabrication
detection
techniques
platforms.
Then,
latest
research
development
combining
two
pollutant
bodies,
including
heavy
metals,
pesticides,
micro-
nanoplastics,
microalgae,
mainly
introduced.
Finally,
challenges
encountered
future
directions
industrial
chips
discussed.
Analytical Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Trifluralin,
a
widely
used
dinitroaniline
herbicide,
poses
significant
toxic
risks,
necessitating
the
development
of
rapid
detection
methods
for
food
safety.
In
this
study,
we
prepared
ultrathin
two-dimensional
triphenylamine
porous
organic
nanosheets
(TPA-PONs)
through
facile
liquid-phase
exfoliation
process.
The
TPA-PONs,
characterized
by
their
exceptional
fluorescence
properties
and
nanoscale
thickness
(1.65
±
0.3
nm),
demonstrated
remarkable
quenching
response
upon
exposure
to
trifluralin.
Spectroscopic
analysis
combined
with
DFT
calculations
revealed
that
mechanism
is
driven
electron
energy
transfer.
TPA-PONs-based
sensor
exhibited
linear
trifluralin
concentrations
ranging
from
0.01
10.0
μmol
L-1
limit
as
low
3.50
nmol
L-1.
Additionally,
was
applied
detect
residues
in
vegetables,
achieving
recoveries
89.08-102.84%.
To
facilitate
on-site
detection,
novel
colorimetric
film
has
been
developed,
enabling
visual
using
smartphone.
This
dual-mode
sensing
platform
holds
potential
enhancing
safety
monitoring.
Journal of Agricultural and Food Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 13, 2025
Poly-
and
perfluoroalkyl
substances
(PFASs)
are
a
large
class
of
fluorinated
chemicals
used
in
various
industrial
agrochemical
products
such
as
benzoylurea
(FBU)
pesticides.
Initiated
from
an
incidental
preliminary
finding
three
high-abundance
FBUs
fish,
this
study
implemented
nontarget
analysis
characterization
for
together
with
their
analogues
transformation
(TPs)
fish
using
liquid
chromatography,
high-resolution
mass
spectrometry,
chemical
species-specific
algorithms.
A
total
23
FBU-relevant
compounds
were
found
tentatively/accurately
elucidated
structures,
including
18
PFASs
5
non-PFAS
compounds,
which
4
original
FBUs,
8
FBU
analogues,
11
FBU-TPs.
The
concentrations
0.8–1919.3
ng/g
the
samples.
strategy
data-processing
algorithms
can
be
extended
to
other
fluorine-containing
pesticides,
results
provide
new
understanding
PFAS
pollution
unveil
important
source
pollutants,
utilization
FBUs.