Biomedical Chromatography,
Год журнала:
2023,
Номер
37(10)
Опубликована: Июль 4, 2023
Abstract
Tea
is
the
most
popular
daily
drink
consumed
globally,
with
a
high
concentration
of
caffeine
and
polyphenols.
In
this
study,
effects
ultrasonic‐assisted
extraction
quantification
polyphenols
from
green
tea
were
investigated
optimized
using
2
3
‐full
factorial
design
high‐performance
thin‐layer
chromatography.
Three
parameters
to
maximize
extracted
ultrasound:
crude
drug‐to‐solvent
ratio
(1:10–1:5),
temperature
(20–40°C),
ultrasonication
time
(10–30
min).
The
optimal
conditions
achieved
model
for
as
follows:
ratio,
0.199
g/ml;
temperature,
39.9°C;
time,
29.9
min;
extractive
value
was
found
be
16.8%.
Images
scanning
electron
microscopy
showed
that
matrix
underwent
physical
alteration
cell
wall
disintegration,
which
intensified
accelerated
extraction.
This
process
might
simplified
sonication,
results
in
higher
yield
significant
than
traditional
approach,
smaller
quantity
solvent
faster
analytical
times.
result
chromatography
analysis
proves
positive
correlation
between
polyphenol
concentrations.
Heliyon,
Год журнала:
2023,
Номер
9(5), С. e16212 - e16212
Опубликована: Май 1, 2023
Sleep
bruxism
(SB)
is
a
common
behavior
that
can
result
in
various
clinical
consequences
on
human
health.
Risk
factors
for
SB
include
among
others
emotional
stress,
anxiety,
tobacco
smoking,
and
excessive
alcohol
consumption.
Coffee
black
tea
are
the
most
commonly
consumed
beverages
worldwide.
This
study
explores
influence
of
coffee
consumption
intensity,
as
observed
polysomnographic
examination.Polysomnographic
examination
with
simultaneous
camera
recording
was
conducted
106
adult
subjects.
The
results
were
evaluated
according
to
guidelines
set
out
by
American
Academy
Medicine
(AASM).
group
divided
habitual
stimulant
usage,
declared
participants
self-reported
questionnaire.
Four
groups
identified:
drinkers
versus
non-drinkers
non-drinkers.The
episode
index
(BEI)
increased
coffee-drinkers
opposed
(4.59
±
3.44
vs.
2.87
1.50,
p
=
0.011).
fragmentation,
measured
arousal
index,
comparable
non-drinkers.
Electrolyte
lipid
levels
similar
Habitual
intake
did
not
affect
sleep
architecture
or
intensity.The
showed
risk
factor
intensity
bruxism.
Neither
nor
related
fragmentation
drinkers.
does
electrolyte
concentrations.
Caution
should
therefore
be
recommended
drinking
people
Foods,
Год журнала:
2023,
Номер
12(10), С. 1958 - 1958
Опубликована: Май 11, 2023
Spent
coffee
grounds
(SCG)
contain
bioactive
compounds.
In
this
work,
given
the
increasing
demand
to
valorize
waste
and
use
green
technologies,
SCG
were
submitted
extraction
by
carbon
dioxide
(CO
Antioxidants,
Год журнала:
2024,
Номер
13(9), С. 1076 - 1076
Опубликована: Сен. 3, 2024
Caffeine
is
one
of
the
most
commonly
used
drugs
in
intensive
care
to
stimulate
respiratory
control
mechanisms
very
preterm
infants.
Respiratory
instability,
due
degree
immaturity
at
birth,
results
apnea
prematurity
(AOP),
hyperoxic,
hypoxic,
and
intermittent
hypoxic
episodes.
Oxidative
stress
cannot
be
avoided
as
a
direct
reaction
leads
neurological
developmental
deficits
even
higher
prevalence
diseases
further
development
premature
Due
proven
antioxidant
effect
caffeine
early
use,
largely
protective
effects
on
clinical
outcomes
can
observed.
This
also
impressively
observed
experimental
studies
application
oxidative
stress-adapted
rodent
models
damage
developing
brain
lungs.
However,
shows
undesirable
outside
these
oxygen
toxicity
injury
models.
review
hypoxic/hypoxic-ischemic,
models,
but
negative
organism
when
administered
without
exogenous
stress.
The
narrative
analysis
benefits
cerebral
pulmonary
infant
supports
use
should
given
critical
consideration
considering
treatment
beyond
recommended
corrected
gestational
age.
Biomedical Chromatography,
Год журнала:
2023,
Номер
37(10)
Опубликована: Июль 4, 2023
Abstract
Tea
is
the
most
popular
daily
drink
consumed
globally,
with
a
high
concentration
of
caffeine
and
polyphenols.
In
this
study,
effects
ultrasonic‐assisted
extraction
quantification
polyphenols
from
green
tea
were
investigated
optimized
using
2
3
‐full
factorial
design
high‐performance
thin‐layer
chromatography.
Three
parameters
to
maximize
extracted
ultrasound:
crude
drug‐to‐solvent
ratio
(1:10–1:5),
temperature
(20–40°C),
ultrasonication
time
(10–30
min).
The
optimal
conditions
achieved
model
for
as
follows:
ratio,
0.199
g/ml;
temperature,
39.9°C;
time,
29.9
min;
extractive
value
was
found
be
16.8%.
Images
scanning
electron
microscopy
showed
that
matrix
underwent
physical
alteration
cell
wall
disintegration,
which
intensified
accelerated
extraction.
This
process
might
simplified
sonication,
results
in
higher
yield
significant
than
traditional
approach,
smaller
quantity
solvent
faster
analytical
times.
result
chromatography
analysis
proves
positive
correlation
between
polyphenol
concentrations.
