Comprehensive Reviews in Food Science and Food Safety,
Journal Year:
2022,
Volume and Issue:
21(5), P. 3867 - 3909
Published: July 9, 2022
Abstract
Tea
is
among
the
most
consumed
nonalcoholic
beverages
worldwide.
Understanding
tea
flavor,
in
terms
of
both
sensory
aspects
and
chemical
properties,
essential
for
manufacturers
consumers
to
maintain
high
quality
products
correctly
distinguish
acceptable
or
unacceptable
products.
This
article
gives
a
comprehensive
review
on
aroma
off‐flavor
characteristics
associated
with
184
odorants.
Although
many
efforts
have
been
made
toward
characterization
flavor
compounds
different
types
tea,
modern
analytical
techniques
that
affect
results
analysis
not
compared
summarized
systematically
up
now.
Thus,
overview
mainly
provides
instrumental
taste
(i.e.,
extraction
enrichment,
qualitative,
quantitative,
chemometric
approaches)
as
well
descriptive
methodologies
which
helpful
researchers.
Flavor
developments
evolved
time‐saving,
portability,
real‐time
monitoring,
visualization
are
also
prospected
get
deeper
insight
into
influences
processing
formation
changes
compounds,
especially
desired
substances
present
at
(ultra)trace
amounts
Journal of Food Science,
Journal Year:
2022,
Volume and Issue:
87(5), P. 1925 - 1942
Published: April 2, 2022
Abstract
Fresh
tea
leaves
(
Camellia
sinensis
(L.)
O.
Kuntze)
are
processed
by
various
techniques
to
produce
different
types
of
tea.
The
most
common
way
classify
is
based
on
the
similarities
in
processing
methods
resulting
five
commonly
recognized
types:
white,
green,
oolong,
black,
and
pu‐erh
teas.
differences
degree
nature
fermentation
lead
chemical
changes
depending
method.
Understanding
phytochemical
profile
differently
important,
as
classified
currently
not
well
defined
because
parameters
for
these
still
established.
Therefore,
any
significant
characteristics
found
a
type
due
may
be
helpful
defining
types.
However,
evidence
impact
contents
unclear.
this
review
aims
examine
(1)
tea,
(2)
phytochemicals,
(3)
key
associated
with
profiles
Practical
Application
Tea
Kuntz)
widely
consumed
beverage
world.
consumption
has
been
demonstrated
through
in‐vitro
experiments
animal
human
intervention
studies
exhibit
potential
preventing
oxidative
stress‐related
chronic
diseases,
such
cardiovascular
Alzheimer.s
disease,
diabetes
certain
cancers.
Based
methods,
categorized
into
black
pu‐er
there
large
overlap
between
some
teas
and,
more
importantly,
compositions
highly
variable.
This
how
Pu‐erh
processed,
what
effects
phytochemicals
identify
whether
will
contribute
research
collating
one
article
state
knowledge
composition
teas,
point
future
direction
area
research.
Current Research in Food Science,
Journal Year:
2022,
Volume and Issue:
5, P. 1788 - 1807
Published: Jan. 1, 2022
Although
aroma
is
one
of
the
most
essential
factors
determining
quality
Fu
brick
tea
(FBT),
profiles
FBTs
from
different
manufacturing
areas
are
rarely
investigated.
The
manufactured
in
five
typical
provinces
China
were
comprehensively
analyzed
on
basis
headspace
gas
chromatography–ion
mobility
spectrometry
(HS–GC–IMS),
solid-phase
microextraction
chromatography–mass
(HS–SPME–GC–MS),
sensory
evaluation,
odor
activity
value
(OAV),
and
relative
(ROAV).
HS–GC–IMS
HS–SPME–GC–MS
identified
63
93
volatile
organic
compounds
(VOCs),
respectively.
Multivariate
statistical
analysis
indicated
that
production
regions
had
remarkably
varied
aromas.
revealed
27
VOCs
(OAV
>1)
contributed
to
overall
samples,
which
15
key
differential
can
effectively
distinguish
FBTs.
FBT
Shaanxi
manifested
a
strong
floral
fruity
aroma;
Hunan
floral,
grassy,
pine-woody
Guizhou
presented
grassy
herbal
Guangxi
exhibited
sweet,
minty
Zhejiang
possessed
various
fruit
flavors
fragrance.
OAV
biomarkers
responsible
for
variation
characteristics
diverse
These
included
linalool,
6-methyl-5-hepten-2-one,
α-ionone,
hexanal,
ethyl
hexanoate.
Sensory
evaluation
demonstrated
infusion
color
samples
also
greatly
varied.
Network
correlation
Aspergillus
Eurotium
crucial
microorganisms
metabolism
formation
VOCs.
findings
provide
new
insight
into
fragrance
features
produced
China.
