Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy,
Journal Year:
2023,
Volume and Issue:
294, P. 122548 - 122548
Published: Feb. 24, 2023
Surface-enhanced
Raman
spectroscopy
(SERS)
technology
has
been
revived
and
developed
with
the
introduction
of
metal-organic
frameworks
(MOFs),
while
more
valuable
properties
MOFs
for
SERS
substrates
remain
largely
unexplored.
This
work
constructed
a
new
substrate
Fe3O4@UiO-66(Zr)@Ag
nanoparticles
(FUAs)
excellent
detection
sensitivity,
uniformity,
reproducibility
stability,
exhibiting
high
enhancement
factor
(5.62
×
106),
low
limit
(LOD,
2.11
10-11
M)
RSD
(12.41
%)
4-NBT,
maintaining
81
%
activity
within
60
days.
The
FUAs
took
full
advantage
strong
affinity
UiO-66(Zr)
organophosphorus
pesticides
(OPs)
to
realize
trace
OPs
detection.
LODs
phoxim,
triazophos
methyl
parathion
in
apple
juice
were
0.041,
0.021
0.0031
mg/L,
respectively,
good
linearities
ranging
from
0.02
or
0.1-50
meeting
requirements
food
control
standards,
indicating
that
potentials
prospects
detecting
foods.
Trends in Food Science & Technology,
Journal Year:
2024,
Volume and Issue:
147, P. 104463 - 104463
Published: March 25, 2024
Process
analysis
is
an
important
step
for
online
food
quality
control
during
processing.
Among
the
emerging
non-destructive
examination
techniques
that
offer
rapid
detection,
terahertz
spectroscopy
has
attracted
attention
in
analysing
processes
based
on
various
parameters.
Moreover,
calibration
and
chemometric
methods
are
frequently
used
spectral
data
analysis.
The
system
normally
consists
of
processing
equipment
time-domain
imaging
(THz-TDS),
which
often
exhibits
high
prediction
accuracy
combined
with
appropriate
chemometrics
methods.
Therefore,
been
considered
highly
suitable
on-site
in-situ
process
to
enhance
manufacturing
thus
improve
product
quality.
In
this
review,
applications
THz-TDS
dehydration,
storage,
freezing,
fermentation,
as
well
other
areas,
introduced
discussed.
these,
technology
intensive
research
related
moisture
changes,
such
dehydration
storage
under
natural
drying
conditions.
Emerging
techniques,
hot
air
(HAD)
microwave
vacuum
(MVD),
investigated.
Applications
including
hygroscopic
processes,
were
also
reported.
For
freezing
analysis,
it
mainly
analyze
(i)
effect
repeated
thawing
meat
(ii)
growth
rate
ice
crystals.
fermentation
processing,
although
most
confirmed
feasibility
THz-TDS,
further
investigation
regarding
still
awaited.
combination
widely
employed
non-linear
changes
attributes
emergence
numerous
recent
years.
It
content
polar
substances
hydrogen
sulfide
ammonia.
Despite
performance,
drawbacks
cost,
interference
from
content,
disturbance
constituents
protein
significant
obstacles
universalization
THz-TDS.
Microchemical Journal,
Journal Year:
2023,
Volume and Issue:
190, P. 108563 - 108563
Published: Feb. 26, 2023
SERS
sensors
based
on
metal-organic
frameworks
(MOFs)
have
garnered
considerable
attention
in
trace
pesticide
residue
detection.
UiO-66/AuNPs
suspension
substrates
were
fabricated
by
introducing
thioglycolic
acid
(TGA)
as
a
binder
to
modify
the
surface
of
AuNPs
facilitate
their
electrostatic
assembly
with
UiO-66
prepared
through
hydrothermal
reaction.
The
proposed
used
for
quantitative
and
simultaneous
analysis
paraquat
diquat
cabbage.
Diquat
actual
cabbage
samples
individually
analysed
detection
limits
(LOD)
6
μg/L
3
μg/L,
respectively,
validated
recoveries
ranging
from
92.65
118.34%.
Furthermore,
substrate
was
able
differentiate
between
mixtures,
even
concentrations
extracts
differed
factor
100.
provides
potentially
useful
tool
determination
residues
practical
food
safety
Trends in Food Science & Technology,
Journal Year:
2023,
Volume and Issue:
141, P. 104202 - 104202
Published: Oct. 14, 2023
Food
safety
is
directly
relevant
to
human
health
and
has
drawn
the
intense
attention
of
public.
Surface-enhanced
Raman
scattering
(SERS),
as
a
rapid
facile
technology,
been
widely
employed
for
food
detection.
SERS
substrates,
an
important
part
this
greatly
influence
performance.
Currently,
porous
materials
(PSM)
nanohybridized
with
metal
nanoparticles
(MNPs)
(PSM/MNPs)
serving
substrates
have
attracted
great
interest
due
their
excellent
merits
in
improvement
sensitivity,
specificity
stability,
posing
potential
in-situ
detection
contaminants
complex
matrixes.
In
review,
types
synthesis
methods
PSM
available
fabrication
which
include
carbon
(PC),
silicon/silica
(PS/PSiO2),
metal-organic
frameworks
(MOFs),
high
polymer,
semiconductor,
cellulose
other
are
introduced
nanohybridization
MNPs
discussed.
addition,
recent
applications
PSM/MNPs
enhancing
areas
such
pesticide
veterinary
drug
residues,
illegal
additives,
foodborne
bacteria,
mycotoxin,
spoilage
markers
heavy
metals
also
presented,
future
challenges
solutions
finally
detailed
current
review.
Compared
non-porous
materials,
porosity
large
surface
specific
area
prevent
from
aggregation
increase
adsorption
target
analyte,
leading
stability
sensitivity
substrates.
Moreover,
adjustable
pore
sizes
these
enable
selective
absorption
molecules,
blocking
interference
big
molecules.
On
hand,
multiple
structure
enhances
intensity,
analytes.
Recent
detecting
various
hazards
show
promising
prospect
sustainable,
environmentally
friendly
large-scale
ensuring
safety.
Food Chemistry,
Journal Year:
2023,
Volume and Issue:
433, P. 137389 - 137389
Published: Sept. 3, 2023
A
new
type
of
durian-shaped
Fe3O4@Au@Ag@Au
(DFAAA)
multilayer
core-shell
composite
was
prepared
as
an
efficient
surface-enhanced
Raman
scattering
(SERS)
substrate.
The
optimization
process
and
SERS
enhancement
mechanism
the
substrate
were
further
explained
with
finite-difference
time-domain
simulation.
dense
uniform
spiny
array
on
DFAAA
surface
had
abundant
"hot
spots",
greatly
improving
sensitivity,
uniformity
reproducibility,
a
factor
3.01
×
107
storage-life
30
d.
"flow
magnetic
detection
method"
proposed
to
realize
rapid
flexible
pesticide
residues
different
foods
including
fish
apple.
limit
malachite
green
thiram
apple
surfaces
0.13
0.18
ng/cm2,
respectively.
With
its
high
performance
good
magnetic,
possessed
great
application
prospects
facile
for
non-destructive
trace
foods.
