Green Extraction of Phenolic Compounds from Artichoke By-Products: Pilot-Scale Comparison of Ultrasound, Microwave, and Combined Methods with Pectinase Pre-Treatment
Antioxidants,
Год журнала:
2025,
Номер
14(4), С. 423 - 423
Опубликована: Март 31, 2025
The
revalorization
of
artichoke
(Cynara
scolymus
L.)
by-products
is
a
promising
strategy
to
obtain
bioactive
compounds
with
antioxidant
properties,
supporting
circular
economy
approach.
This
study
compares
the
efficiency
an
enzymatic
pretreatment
followed
by
microwave-assisted
extraction
(EMAE),
ultrasound-assisted
(EUAE),
and
ultrasound-microwave-assisted
(EUMAE)
at
pilot
scale
for
recovering
compounds.
Extracts
were
purified
using
Diaion®
HP20
resin
phenolic-rich
fractions
enhanced
activity.
results
showed
that
EUAE
was
most
effective
technique,
achieving
total
phenolic
content
(TPC)
210.76
±
1.40
µmol
GAE/g
d.w.
yield
21.38%.
HPLC-MS
analysis
identified
14
major
compounds,
including
chlorogenic
acid
isomers
(60.73
mg/g
d.e.),
caffeic
(34.29
luteolin
rutinoside
(103.27
among
others,
which
contribute
extracts’
high
bioactivity.
potential
extracts
assessed
Folin–Ciocalteu
(F-C),
ABTS,
DPPH,
FRAP
assays.
exhibited
highest
activity
values,
F-C:
985.33
4.46
d.e.,
ABTS:
80.46
2.39
TE/g
DPPH:
87.03
1.11
FRAP:
184.99
2.52
d.e.
purification
process
further
TPC
activity,
enzyme–ultrasound-assisted
extraction—purified
extract
(EUAE-PE)
reaching
purity
50.71%
F-C
value
2981.35
12.16
Язык: Английский
Hydrogel Based on Cellulose and Mangosteen Rind Extract With Antibacterial Activity: Preparation and Characterization
Biopolymers,
Год журнала:
2025,
Номер
116(3)
Опубликована: Май 1, 2025
ABSTRACT
In
this
study,
an
efficient
method
to
prepare
antibacterial
hydrogel
from
natural
resources
was
carried
out.
The
extraction
of
mangosteen
rind
made.
Silver
nanoparticle
introduced
the
through
reduction
AgNO
3
with
extract.
Hydrogels
were
prepared
graft‐copolymerization
acrylic
acid
on
cellulose
in
presence
ammonium
persulfate
as
initiator,
followed
by
crosslinking
N,
N
′‐methylenebisacrylamide.
characterization
components,
structure,
and
properties
extract
hydrogels
solvent
mixture
water:ethanol
1:2
(v/v)
most
suitable
for
rind.
silver
found
form
a
strong
interaction
composition
hydrogel,
which
resulted
improvement
thermal
property
sterilization
both
gram‐positive
gram‐negative
bacteria.
When
content
9.7
±
0.2
wt%,
achieved
highest
activity.
Язык: Английский