International Journal of Science and Research Archive,
Год журнала:
2024,
Номер
12(1), С. 2115 - 2124
Опубликована: Май 30, 2024
Two
mathematical
models
of
polyphenols
extraction
from
green
tea
leaves
were
tested:
Peleg’s
model
and
First-order
model.
Thermodynamical
parameters
the
process
determined.
For
we
got
following
analytical
equation:
Ct=
t/(0.2570207+0.0324377*t).
Ct
is
a
concentration
in
extract
at
time
t.
equation
describing
was
as
follows:
Ct=23.09278*(1-exp(-0.1418264*t)).
Goodness
fit
both
high
but
first-order
prognosed
equilibrium
infusion
with
much
more
precisely
than
Activation
energy
for
equal
to
2798
j/mol.
Entropy
change
(ΔS)
this
52
(J,
(mol,
K−1)),
enthalpy
(ΔH)
16304
(Jmol−1).
The
ΔG
value
gradually
decreased
temperature
increased,
indicating
that
increasing
can
make
easier.
First
Order
Model
shown
be
well
process.
most
useful
conditions
70
℃
20
min.
Frontiers in Sustainable Food Systems,
Год журнала:
2024,
Номер
8
Опубликована: Авг. 21, 2024
Introduction
The
presence
of
excessive
heavy
metal
content
in
food
poses
potential
risks
to
human
health.
Methods
This
paper
presents
the
fabrication
a
novel
type
Carbon
Dots
(CDs)
using
green
tea
residue
as
carbon
source,
which
can
be
applied
for
simultaneous
detection
Hg
2+
,
Pb
Fe
3+
and
Cu2
through
particle
swarm
optimization
(PSO)
based
optimized
variable-weighted
least-squares
support
vector
machine
(VWLS-SVM)
model
partial
least
squares
discriminant
analysis
(PLSDA)
method.
Results
Discussion
utilization
PSO-VWLS-SVM
discovered
verified
two
fluorescence
enhancement
markers
CDs,
namely
isoquercitrin
5-methyl
furfural
residues.
By
employing
PLSDA,
qualitative
quantitative
determination
these
four
ions
was
achieved.
These
CDs
are
capable
detecting
types
at
low
concentrations
even
when
there
high
other
amino
acids.
More
importantly,
were
successfully
Cu
real
samples.
recovery
rates
spiked
into
five
different
matrices
found
range
99.1–101.3%,
while
both
intra-day
inter-day
relative
standard
deviations
remained
below
0.5%
all
study
on
chemometrics-assisted
exploration
formation
mechanisms
endogenous
provides
theoretical
guidance
enhancing
their
properties
expanding
application
food.
International Journal of Innovative Science and Research Technology (IJISRT),
Год журнала:
2024,
Номер
unknown, С. 3116 - 3127
Опубликована: Май 11, 2024
Research
into
the
antioxidant
efficacy
and
sustainability
implications
of
tea
waste,
a
by-product
rapidly
growing
global
beverage
industry,
is
increasingly
necessary.
This
study
scrutinized
samples
taken
from
various
factories
to
explore
their
capacity
for
free
radical
scavenging
potential
public
health
environmental
benefits.
Analysis
reference
(BHT)
revealed
notable
dose-
dependent
rise
in
free-radical-scavenging
action,
implying
positive
concentration-dependent
efficacy.
Variations
activity
occurred
wastes
sourced
at
factories,
alluding
geography
having
pivotal
effect
on
biological
contents
antioxidative
capacity.
Of
particular
interest
were
Boito's
Chelal's
cyclone
fluff
that
evinced
relatively
lower
potency
than
those
other
factories.
Tombe
factory's
sample
demonstrated
superior
radicals
different
concentrations,
suggesting
production
or
cultivation
processes
augmented
its
effectiveness.
Notably,
some
waste
even
equalled
BHT
(a
synthetic
antioxidant)
when
augured
highest
level.
Furthermore,
this
disparities
Theaflavin
Thearubigin
content
due
factors
like
maturation
period
processing
methods
guiding
these
concentrations.
We
identified
possessing
remarkable
polyphenol
concentration,
thereby
providing
valuable
insights
consumers
industries.
Further
investigations
chemical
composition
phytocompounds
are
paramount
acclaimed
health-promoting
properties
influencing
concentrations
Advances in Pharmacological and Pharmaceutical Sciences,
Год журнала:
2024,
Номер
2024(1)
Опубликована: Янв. 1, 2024
Tea
is
a
rich
source
of
phytochemicals;
their
composition
in
tea
extracts
varies
depending
on
the
cultivar,
climate,
production
region,
and
processing
handling
processes.
The
method
extraction
plays
crucial
role
determining
biological
effects
bioactive
compounds
leaves.
However,
reports
catechin
profiles
antioxidant
activities
obtained
from
leaves
at
different
stages
maturity
are
limited.
Here,
we
aimed
to
evaluate
effect
ultrasound-assisted
(UAE)
drying
methods,
freeze
(FD)
spray
(SD),
compounds,
phenolic
composition,
activity
part
leaves,
top
(TT),
middle
(ML),
mature
(MT),
Assam
cultivar
(
The
food
firm
needs
thermal
treatment
largely
to
extend
shelf
life
and
preserve
safety
at
a
cheap
cost.
However,
the
process
alters
quality
freshness
in
addition
inactivating
germs
enzymes.
In
order
inactivate
microorganisms
temperatures
lower
than
those
frequently
utilized
heat
treatments,
alternatives
classical
have
been
researched.
global
beverage
sector,
citrus
juices
are
most
consumed
fruit
juices.
Although
processing
is
still
often
used
pasteurization
method,
research
into
other
methods
that
reduce
modifications
organoleptic
nutritional
qualities
gaining
momentum.
Atherosclerosis,
stroke,
cancer,
diabetes,
arthritis
just
few
of
non-communicable
illnesses
diets
high
vegetables
proven
risk
of.
primary
focus
this
chapter
on
fundamental
concepts
juice
associated
products
with
special
attention
paid
improvement
relation
both
traditional
alternative
heat-employing
technologies.
The Journal of Phytopharmacology,
Год журнала:
2024,
Номер
13(1), С. 20 - 27
Опубликована: Фев. 29, 2024
The
escalating
global
challenge
of
antibiotic
resistance
demands
exploration
into
alternative
sources
for
antimicrobials.
This
study
investigated
the
often-overlooked
tea
waste
samples
generated
during
processing
from
Kenyan
factories
to
uncover
novel
resources
containing
potent
and
effective
antimicrobial
compounds.
In
this
study,
we
collected
various
in
Kenya
assessed
their
activity
against
microorganisms
using
disk
diffusion
assay.
To
quantify
efficacy
each
sample,
determined
growth
inhibition
zones
minimum
inhibitory
bactericidal
concentrations
(MICs
MBCs).
unveiled
diverse
levels
specific
microorganisms.
Notably,
fluff
sample
Gitambo
factory
demonstrated
antibacterial
effects
Clostridium
disporicum.
Various
exhibited
a
moderate
response
both
Streptococcus
pyogenes
Escherichia
coli,
yet
they
showed
minimal
no
activity,
where
applicable,
towards
Staphylococcus
aureus
Candida
albicans.
that
some
effluents,
which
are
often
discarded
processing,
show
potential,
as
certain
pathogens.
By
further
optimizing
our
handling
storage
practices,
could
enhance
isolation
compounds
these
materials;
would
provide
valuable
alternatives
combating
resistance.
International Journal of Science and Research Archive,
Год журнала:
2024,
Номер
12(1), С. 2115 - 2124
Опубликована: Май 30, 2024
Two
mathematical
models
of
polyphenols
extraction
from
green
tea
leaves
were
tested:
Peleg’s
model
and
First-order
model.
Thermodynamical
parameters
the
process
determined.
For
we
got
following
analytical
equation:
Ct=
t/(0.2570207+0.0324377*t).
Ct
is
a
concentration
in
extract
at
time
t.
equation
describing
was
as
follows:
Ct=23.09278*(1-exp(-0.1418264*t)).
Goodness
fit
both
high
but
first-order
prognosed
equilibrium
infusion
with
much
more
precisely
than
Activation
energy
for
equal
to
2798
j/mol.
Entropy
change
(ΔS)
this
52
(J,
(mol,
K−1)),
enthalpy
(ΔH)
16304
(Jmol−1).
The
ΔG
value
gradually
decreased
temperature
increased,
indicating
that
increasing
can
make
easier.
First
Order
Model
shown
be
well
process.
most
useful
conditions
70
℃
20
min.
