Impact of Winemaking Techniques on the Phenolic Composition and Antioxidant Properties of Touriga Nacional Wines
Molecules,
Journal Year:
2025,
Volume and Issue:
30(7), P. 1601 - 1601
Published: April 3, 2025
The
Touriga
Nacional
grape
variety
is
renowned
in
Portuguese
red
wines
for
its
intense
color
and
aromatic
complexity,
largely
attributed
to
rich
phenolic
composition.
Several
factors
influence
the
profile
of
wines,
including
edapho-climatic
conditions,
variety,
winemaking
techniques
such
as
fermentation,
maceration,
barrel
aging,
maturation.
In
this
study,
technique
was
only
controlled
variable,
allowing
a
specific
evaluation
impact
on
composition
antioxidant
capacity.
Ten
single-varietal
wine
samples
from
2019
vintage,
produced
Cima
Corgo
sub-region
Douro
by
different
wineries,
were
analyzed.
determined
using
colorimetric
methods
quantify
total
phenols,
ortho-diphenols,
flavonoids,
anthocyanins,
tannins.
Antioxidant
capacity
assessed
through
2,2-diphenyl-1-picrylhydrazyl
(DPPH),
2,2′-Azino-bis
(3-ethylbenzothiazoline-6-sulfonic
acid)
diammonium
salt
(ABTS),
Ferric
Reducing
Power
(FRAP)
assays.
Since
all
shared
same
region,
harvest
year,
fermentation
main
differentiating
factor,
enabling
direct
comparison
extraction
properties.
Additionally,
Reversed-Phase
High-Performance
Liquid
Chromatography
with
Photodiode
Array
Detection
coupled
Mass
Spectrometry
(RP-HPLC-DAD-ESI-MS/MS)
employed
identify
individual
compounds.
This
study
highlights
key
role
modulating
potential
wines.
Language: Английский
Advances in Leaf Plant Bioactive Compounds: Modulation of Chronic Inflammation Related to Obesity
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(7), P. 3358 - 3358
Published: April 3, 2025
Over
the
years,
there
has
been
a
tendency
for
an
increase
in
global
obesity.
The
World
Health
Organization's
(WHO)
2024
report
states
that
2019,
more
than
one
billion
people
were
obese,
and
this
condition
was
responsible
five
million
deaths,
being
obesity
is
prevalent
among
adults
compared
to
adolescents
children.
Obesity
chronic
disease
characterized
by
alterations
adipose
tissue.
When
excessive
food
consumed
energy
expenditure
low,
tissue
undergoes
hypertrophy
hyperplasia.
This
process
activates
B
cells
induces
transition
of
anti-inflammatory
M2-like
macrophages
into
pro-inflammatory
M1-like
macrophages.
cells,
acting
as
inflammatory
mediators,
stimulate
CD8+
T
promote
macrophage
infiltration
tissues.
triggers
inflammation,
increases
oxidative
stress,
ultimately
leads
cellular
death.
During
cytokines
occurs
along
with
decrease
cytokines.
By
contrast,
stress
related
reactive
oxygen
species
(ROS),
oxidation
biomolecules,
antioxidants.
mechanism
can
be
mitigated
through
several
healthy
lifestyle
changes,
primarily
including
regular
physical
activity
eating.
These
factors
help
reduce
mediators
ROS,
lowering
inflammation
stress.
Therefore,
review
article
focuses
on
studying
bioactive
compounds
present
edible
leaves
Annona
cherimola
Mill.,
Ipomoea
batata
(L.)
Poir.,
Colocasia
esculenta
Schott,
Eriobotrya
japonica,
Cymbopogon
citratus,
Psidium
guajava
(L.),
Smallanthus
sonchifolius
evaluate
their
effects
mechanisms
involved
Language: Английский
Portuguese Monofloral Honeys: Molecular Insights and Biochemical Characterization
Molecules,
Journal Year:
2025,
Volume and Issue:
30(8), P. 1808 - 1808
Published: April 17, 2025
Honey
is
a
multifaceted
substance
whose
composition
intricately
affected
by
various
biotic
and
abiotic
elements
generated
in
the
bee
colony’s
surroundings,
including
botanical
geographical
origins,
climatic
conditions,
soil
characteristics,
beekeeping
techniques.
Monofloral
honeys
are
identified
pollen
analysis
derived
from
nectar
of
predominant
plant
species,
exhibiting
rich
sensory
nutritional
profiles,
making
them
food
matrices
with
unique
characteristics
excellent
qualities.
To
explore
monofloral
honey
potential
harvested
different
regions
Portugal,
comprehensive
study
was
conducted
determination
phenolic
assessment
biological
activities.
In
addition
to
this
evaluation,
inter
simple
sequence
repeat
(ISSR)
used
help
differentiate
origin.
The
content
antioxidant
capacity
were
evaluated
spectrophotometric
methods,
observing,
general,
differences
between
honeys.
Citrus
sinensis
(Silves)
exhibited
lowest
content,
total
phenols,
ortho-diphenols,
flavonoids,
whereas
honeydew
(Vinhais)
showed
highest
values.
Regarding
capacity,
Lavandula
stoechas
(Almodôvar)
presented
values,
while
displayed
values
for
both
DPPH
FRAP
assays.
relation
ABTS
assay,
Metrosideros
excelsa
(Aveiro)
Eucalyptus
spp.
(Arouca)
highest.
ISSR
marker
allows
distribution
samples
based
on
honey’s
origin,
suggesting
its
role
authentication.
Language: Английский
Insights into the digestion of chestnut (Castanea sativa) shells bioactive extracts—ultrasound vs. microwave‐assisted extraction
International Journal of Food Science & Technology,
Journal Year:
2024,
Volume and Issue:
59(7), P. 5128 - 5142
Published: May 27, 2024
Summary
In
the
current
study,
polyphenols
were
extracted
from
chestnut
(
Castanea
sativa
)
shells
(CSS)
by
two
eco‐friendly
techniques,
namely
microwave‐assisted
extraction
(MAE)
and
ultrasound‐assisted
(UAE).
The
bioaccessibility,
phenolic
composition
bioactivity
of
CSS
extracts
explored
upon
in
vitro
gastrointestinal
digestion
considering
a
future
nutraceutical
use.
flavonoid
concentrations,
bioaccessibility
antioxidant/antiradical
properties
both
decreased
during
digestion.
was
25%
26%,
respectively,
for
UAE
MAE
extracts.
profile
demonstrated
that
gallic
acid,
caftaric
acid
catechin
most
bioaccessible
compounds
techniques.
unveiled
notable
radicals
scavenging
efficiency,
particularly
against
HOCl
(18.32–75.44%
inhibition)
ONOO
−
(16.78–86.11%
inhibition),
as
well
hypoglycaemic
(6.95–17.99%
α‐amylase
neuroprotective
(16.44–54.66%
AChE
Considering
undigested
extracts,
extract
revealed
better
results
than
extract.
Oppositely,
among
digested
fractions
digests
disclosed
promising
outcomes.
remarkable
contribution
to
after
proved
heatmap
correlations,
indicating
their
pro‐healthy
modified
digestion,
being
ascribed
distinct
composition.
This
study
evaluates,
first
time,
impact
on
phenolics‐rich
prepared
MAE.
Language: Английский
Anti-biofilm Properties of Portuguese Honeys Against Multi-Drug Resistant Microorganisms: A Promising Strategy for Chronic Wounds Healing
Food Bioscience,
Journal Year:
2024,
Volume and Issue:
61, P. 104796 - 104796
Published: Aug. 26, 2024
Language: Английский
Valorisation of Winery By-Products: Revealing the Polyphenolic Profile of Grape Stems and Their Inhibitory Effects on Skin Aging-Enzymes for Cosmetic and Pharmaceutical Applications
Molecules,
Journal Year:
2024,
Volume and Issue:
29(22), P. 5437 - 5437
Published: Nov. 18, 2024
Grape
(
Language: Английский