ACS Food Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
Instant
teas
including
their
herbal
derivatives,
ginger
and
sage,
from
black
tea
waste
fiber
were
produced
to
find
an
effective
strategy
valorize
massive
waste.
Brewing
parameters
for
optimized
maximize
extraction
yield
considering
the
hot
cold
brewing
processes
based
on
water-to-tea
ratio
(30:1
mL/g),
particle
size
range
(the
average
of
19.39
μm),
temperature,
time
(100
°C
6
min
25
2
h).
Despite
improving
effect
catechins,
most
abundant
epicatechin,
theaflavin,
thearubigins,
theanine,
antioxidant
capacity,
total
phenolic
contents
instant
teas,
proved
its
potential
in
gallic
acid
caffeine
extraction.
In
addition
hygroscopicity
color,
morphologies
powders
evaluated
interpretation
solubility
turbidity
infusions.
This
study
offers
innovative
utilization
will
promote
further
other
foods.
Polymers,
Год журнала:
2024,
Номер
16(21), С. 2989 - 2989
Опубликована: Окт. 25, 2024
A
tremendous
amount
of
waste
black
tea
bags
(BTBs)
and
date
palm
surface
fibers
(DPSFs),
at
the
end
their
life
cycle,
up
in
landfills,
leading
to
increased
pollution
an
increase
negative
impact
on
environment.
Therefore,
this
study
aims
utilize
these
normally
wasted
materials
efficiently
by
developing
new
composite
for
thermal
insulation
sound
absorption.
Five
boards
were
developed,
two
bound
(BTB
or
DPSF
with
polyvinyl
Acetate
resin
(PVA))
three
hybrids
(BTB,
DPSF,
resin).
In
addition,
loose
raw
DPSF)
tested
separately
no
binder.
Thermal
conductivity
absorption
coefficients
determined
all
boards.
stability
analysis
was
reported
components
bag
(string,
label,
bag)
one
hybrid
Mechanical
properties
such
as
flexural
strain,
stress,
elastic
modulus
composites.
The
results
showed
that
sample
are
less
than
0.07
ambient
temperature
24
°C
they
enhanced
BTB
ratio
reduced
noise
reduction
coefficient
samples
is
greater
0.37.
thermally
stable
291
°C.
Most
have
a
high
flexure
between
4.3
MPa
10.5
MPa.
low
moisture
content
below
2.25%.
These
output
seem
promising
encouraging
using
developed
eco-friendly
competing
synthetic
ones
from
petrochemicals
building
insulation.
Moreover,
returning
circulation
producing
composites
can
reduce
number
level
environmental
pollution,
use
made
fossil
resources.
Current Research in Nutrition and Food Science Journal,
Год журнала:
2024,
Номер
12(2), С. 923 - 936
Опубликована: Авг. 30, 2024
At
present,
the
bioactive
compounds
of
teas
are
well
established
and
there
more
attempts
to
apply
tea
as
a
functional
drink
or
food
supplement.
In
addition,
during
processing,
waste,
including
broken
leaves,
buds
stems,
is
generated
disposed
environment.
The
present
study
aimed
compare
quality
waste
in
full
fermentation
(raw
Pu-erh
tea,
ripen
Anhua
dark
tea)
non-fermentation
(green
processings
comparison
with
dried
butterfly
pea
flower
(DBPF)
(non-Camellia
sinensis).
results
showed
that
total
flavonoid
(TFC)
was
found
be
highest
raw
at
474.470
±
47.173
mg
RE/g,
followed
by
ripened
green
DBPF,
respectively.
Similarly,
also
had
phenolic
(TPC)
608.090
2.795
GAE/g,
On
other
hand,
polysaccharides
(TPS)
content
DBPF
among
samples,
whereas
lowest.
According
HPLC
analysis,
caffeine
(CF)
major
catechin
all
types
order
>
which
agreement
TPC
results.
However,
were
different
each
sample.
It
noteworthy
no
CF
gallate.
Likewise,
antioxidant
ability
determined
DPPH
most
superior
ORAC
capacity
while
lower
but
not
significantly
different,
expected,
possessed
lowest
capacity.
Finally,
it
can
said
potential
for
valuable
source
antioxidants
varies
depending
on
plant
variety
an
impact
characteristics
samples.
Currently,
in
a
context
of
biorefinery
and
bioeconomy,
lignocellulosic
biomass
is
increasingly
used
to
produce
biofuels,
biochemicals
value-added
products.
Microwaves
ultrasounds
are
emerging
techniques
that
enable
efficient
environmentally
more
sustainable
routes
the
transformation
biomass.
This
review
divided
into
four
parts.
In
Part
I,
theoretical
foundations
microwaves
revisited.
Dielectric
constants
for
biomass,
factors
influence
pre-treatment,
some
subjects
addressed.
II,
effects
these
technologies
have
on
(on
size
surface
area
particle;
content
lignin,
hemicellulose
cellulose;
crystallinity
index
effect
solubilization
organic
matter;
hydrolysis
reduction
sugars)
analyzed.
III,
emphasis
given
how
can
contribute
achievement
this
context,
several
examples
liquefactions
extractions
presented.
IV
describes
sonocatalysis
obtain
products
such
as
instancethe
production
furfural,
which
significantly
reduced
by
ultrasound.
Cellulose Chemistry and Technology,
Год журнала:
2024,
Номер
58(7-8), С. 737 - 746
Опубликована: Сен. 25, 2024
In
recent
years,
the
applications
of
lignocellulosic
biomass
(LCB)
have
substantially
increased
due
to
its
versatility
in
different
areas
study
and
interest.
Therefore,
it
is
evident
that
delignification
pretreatment
LCB
fundamental
assure
viability
commercial
quality
final
product
for
industrial
uses.
The
efficiency
delignification,
obtainment
desired
products,
required
depend
mainly
on
type
method
used.
This
paper
presents
a
state-of-the-art
overview
physical,
chemical,
organic,
biological,
hybrid
(combination
two
or
more
pretreatments),
other
novel
pretreatments
biomass.
Additionally,
conditions
necessary
application
pretreatments,
effect
variables
involved,
advantages
disadvantages
each
are
discussed.
Finally,
advances
development
sustainable
methods
Cellulose Chemistry and Technology,
Год журнала:
2024,
Номер
58(7-8), С. 675 - 681
Опубликована: Сен. 25, 2024
Sengon
wood
sawdust
is
a
industry
waste
the
quantity
of
which
increasing
because
high
market
demand
wood.
This
condition
demands
innovation
in
processing.
Microcrystalline
cellulose
pure
obtained
from
hydrolysis
α-cellulose.
research
aims
to
fabricate
and
characterize
microcrystalline
sawdust.
The
initial
stage
was
carried
out
break
lignocellulose
bonds
through
delignification
process
using
2%
NaOH,
followed
by
α-cellulose
with
4N
HCl
(1:40)
at
80
°C.
acid
treatment
obtain
crystalline
form
removing
amorphous
part.
SEM
micrographs
show
smooth
surface
few
holes
spherical
fibers.
XRD
analysis
revealed
type
I
structure
MCC
crystallinity
index
33.8%
due
treatment.
Chemical
causes
loss
hemicelluloses
lignin,
as
confirmed
FT-IR
results,
higher
thermal
stability
cellulose,
found
DSC
analysis.
ACS Sustainable Resource Management,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 11, 2024
In
the
present
study,
tea
waste
microcrystalline
cellulose
(TWMCC)
was
incorporated
into
polymer
matrix
of
poly(vinyl
alcohol)
(PVA)
to
improve
its
properties
for
food
packaging.
TWMCC/PVA
composite
films
were
prepared
using
solution
casting
method,
and
fabricated
characterized
various
analytical
techniques
determining
chemical,
morphological,
thermal,
mechanical,
water
resistance,
UV-barrier
properties.
Strong
hydrogen
bonding
between
hydroxyl
groups
PVA
TWMCC
forms
a
dense
network
structure,
resulting
in
improvement
vapor
barrier,
UV-blocking
properties,
thermal
films.
5
wt
%
increased
contact
angle
film
81.54°,
while
pure
had
lower
29.31°.
The
incorporation
3
tensile
strength
by
about
2-fold
(from
9.11
±
1.15
18.5
1.93
MPa).
containing
b
showed
promising
performance
extending
fruit
shelf
life
preserving
grapes
up
18
days,
unpacked
lost
marketability
within
one
week.
findings
study
reveal
that
derived
from
industry
can
be
used
as
suitable
filler
material
development
environmentally
friendly
sustainable
packaging
minimize
global
plastic
pollution
issue.
ACS Food Science & Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
Instant
teas
including
their
herbal
derivatives,
ginger
and
sage,
from
black
tea
waste
fiber
were
produced
to
find
an
effective
strategy
valorize
massive
waste.
Brewing
parameters
for
optimized
maximize
extraction
yield
considering
the
hot
cold
brewing
processes
based
on
water-to-tea
ratio
(30:1
mL/g),
particle
size
range
(the
average
of
19.39
μm),
temperature,
time
(100
°C
6
min
25
2
h).
Despite
improving
effect
catechins,
most
abundant
epicatechin,
theaflavin,
thearubigins,
theanine,
antioxidant
capacity,
total
phenolic
contents
instant
teas,
proved
its
potential
in
gallic
acid
caffeine
extraction.
In
addition
hygroscopicity
color,
morphologies
powders
evaluated
interpretation
solubility
turbidity
infusions.
This
study
offers
innovative
utilization
will
promote
further
other
foods.
