Food Chemistry X,
Journal Year:
2024,
Volume and Issue:
23, P. 101649 - 101649
Published: July 18, 2024
This
study
investigated
the
effect
of
anaerobic
treatment
on
non-volatile
components
and
angiotensin-converting
enzyme
(ACE)
inhibitory
activity
in
purple-colored
leaf
tea.
Results
showed
that
after
8
h
treatment,
γ-aminobutyric
acid
(GABA)
content
significantly
increased
from
0.02
mg/g
to
1.72
(
To
improve
the
flavor
of
green
tea
juice
processed
from
summer
leaves,
enzyme-assisted
dynamic
extraction
method
was
applied
and
chemical
components
taste
fresh
prepared
under
different
conditions
were
investigated.
The
results
showed
that
enzyme
treatment
could
significantly
reduce
bitterness
astringency,
enhance
sweet
aftertaste
juice,
which
due
to
significant
decrease
in
concentration
ester
catechins
increase
concentrations
non-ester
gallic
acid
after
treatment.
In
addition,
it
also
found
extracted
with
had
less
sediment
better
stability.
Therefore,
combined
for
leaves
effectively
quality,
rate
promoting
utilization
abandon-plucked
summer.
Comprehensive Reviews in Food Science and Food Safety,
Journal Year:
2025,
Volume and Issue:
24(2)
Published: March 1, 2025
Purple
leaf
tea
products
(PTPs)
are
processed
from
purple
leaves
(PTLs)
and
combine
unique
color,
flavors,
superior
health
benefits,
holding
promising
market
potential.
However,
PTLs
contain
chemical
compositions,
the
lack
of
systematic
generalization
PTPs
processing
techniques
has
led
to
under-representation
their
qualities.
Compared
traditional
green
products,
knowledge
about
is
extremely
limited
lacks
a
framework
linking
composition,
techniques,
which
largely
exploitation
PTPs.
This
review
summarizes
composition
PTLs,
highlights
variations
across
effects
on
flavor
qualities
It
also
explores
potential
benefits
examines
challenges
incorporating
into
food
industry,
offering
insights
applications.
The
characterized
by
its
polyphenolic
profile,
rich
in
anthocyanins,
catechins,
O-methyl
aroma
components
such
as
α/β-ionone
linalool.
requires
suitable
methods
maximize
health-promoting
effects.
offer
notable
including
antioxidant,
anti-inflammatory,
anticancer,
neuroprotective,
anti-obesity
effects,
primarily
due
components.
Additionally,
show
great
natural
colorants
applications
dietary
supplements
tea-flavored
beverages.
Based
these
overviews,
key
possible
future
research
directions
outlined,
especially
advancing
production
systematically
evaluating
expanding
Tea
(Camellia
L.)
falls
into
the
family
Theaceae,
is
a
valuable
commercial
crop,
and
tea
products
made
from
its
buds
young
leaves
are
favored
by
consumers
all
over
world.
The
more
common
Thea
plant
Camellia
sinensis
(C.
sinensis),
but
most
important
relative,
taliensis
taliensis),
also
utilized
locals
in
area
of
cultivation
to
manufacture
tea.
In
this
investigation,
C.
(DL)
(QJZ)
were
characterized
terms
their
agronomic
traits,
physicochemical
indices,
metabolomics,
transcriptomics.
leaf
DL
larger
than
that
QJZ;
color
DL’s
yellowish-green,
while
QJZ’s
green.
densely
velvety
those
QJZ.
HPLC
results
indicated
contents
varied
considerably
between
two
samples,
with
having
greater
concentrations
EGCG
GABA
QJZ,
QJZ
had
remarkably
higher
C,
CA,
EGC
DL.
A
total
2269
metabolites
362,190,414
genes
positively
identified,
number
DAMs
DEGs
being
1001
34,026,
respectively.
flavonoids,
phenolic
acids,
alkaloid
dramatically
different
group
plants.
Bioinformatics
profiling
revealed
plants
interacted
each
other
involved
metabolic
pathways
including
“biosynthesis
secondary
metabolites”,
amino
acids”,
cofactors”,
“phenylpropanoid
biosynthesis”,
“flavonoid
biosynthesis”.
Overall,
these
provide
statistical
support
for
germplasm
conservation
production
both
sinensis.
Forests,
Journal Year:
2024,
Volume and Issue:
15(6), P. 914 - 914
Published: May 24, 2024
Selenium
is
an
important
indicator
for
the
evaluation
of
tea
quality.
However,
relationship
between
selenium
uptake
by
plants
(Camellia
sinensis)
and
soil
properties,
as
well
transport
distribution
in
a
plantation
soil–tea
plant–tea
infusion
production
system,
remain
unclear.
In
this
study,
12
plantations
situated
typical
selenium-rich
area
China
were
selected,
characteristics
crucial
factors
influencing
analyzed
using
system.
The
total
content
ranged
from
1.12
to
6.67
mg
kg−1,
with
average
2.57
kg−1.
available
was
53.56
µg
activation
rate
2.27%.
Soil-available
significantly
positively
correlated
selenium,
potassium,
organic
matter
contents,
negatively
pH.
old
leaves
0.29
2.73
which
met
standard
tea,
whereas
only
33%
young
standard.
enrichment
factor
highest
fibrous
root
lowest
leaves.
roots
main
roots,
stems,
stems
lateral
leaves,
0.53,
0.92,
0.67,
0.97,
2.30,
respectively.
concentration
1.88
12.49
μg
L−1,
dissolution
22.62%
after
one
brewing.
This
study
identified
critical
that
influence
soil-selenium
availability.
plant
organs
indicated
be
strongly
associated
roots.