Potential industrial and nutritional applications of shrimp by-products: a review
International Journal of Food Properties,
Год журнала:
2023,
Номер
26(2), С. 3407 - 3432
Опубликована: Дек. 4, 2023
Asia
is
the
largest
producer
of
shrimp,
accounting
for
70%
global
cultured
production.
The
market
shrimp
has
a
high
demand
and
by-products
from
processing
make
up
40–60%
whole
shrimp.
main
include
head,
viscera,
shell,
pelopods,
tail,
cephalothorax,
exoskeleton.
trends
future
hurdles
by-product
utilization
have
been
outlined.
These
are
good
source
protein
anti-inflammatory,
anti-fungal,
anti-oxidant
properties.
They
also
enhance
immune
system
bioactive
compounds
that
encourage
their
use
anti-cancerous,
anti-hypertensive,
various
other
diseases.
waste
produced
can
yield
valuable
by-products,
including
astaxanthin,
oil,
carotenoids,
fortified
products,
nutrient-enriched
chitin,
protein,
flavor
enhancers,
composite
flour.
astaxanthin
59.97
µg/g
along
with
carotenoid
68.26
µg/ml
dw,
chitosan
(87%),
(47.8%),
oil
extracted
(88.9%)
head
rich
(66%)
chitin
(6%).
help
meet
growing
an
increasing
population.
abundance
healthy
ingredients
found
in
makes
it
resource
scientists,
entrepreneurs,
industrialists
to
develop
new
products.
Additionally,
utilizing
reduce
burden
on
earth
decrease
environmental
pollution.
Язык: Английский
Well-Defined Robust Imidazole-Based Metal–Ligand Cooperative Ru(II)-para-Cymene for Transfer Hydrogenation of Furanic Aldehydes Using Renewable Alcohols
ACS Sustainable Chemistry & Engineering,
Год журнала:
2024,
Номер
12(16), С. 6206 - 6219
Опубликована: Апрель 9, 2024
The
present
study
addresses
the
challenges
in
catalytic
transfer
hydrogenation
using
methanol/ethanol
for
converting
biomass-derived
furanic
aldehydes
to
furfuryl
alcohols.
introduction
of
air-stable
Ru(II)-para-cymene
catalysts
with
imidazole-based
metal–ligand
cooperativity
represents
a
significant
advancement.
Spectroscopic,
situ
monitoring,
labeling,
and
DFT
investigations
reveal
mechanistic
details,
highlighting
role
Ru–H
generation
through
dehydrogenation
Ru(II)-alkoxide
intermediates.
Hydride
proton
transfers
are
facilitated
by
interconvertible
coordination
mode
imidazole
Ru(II)–para-cymene,
which
is
crucial
maintaining
catalyst's
efficiency
selectivity.
Notably,
pKa
N–H
coordinated
significantly
influences
reactivity,
following
specific
order
depending
on
attached
heterocycle:
>
pyridine
thiazole.
This
correlates
well
computed
activation
barrier
generation.
catalyst
exhibits
ease
synthesis,
stability
air
moisture,
use
renewable
hydrogen
sources,
excellent
selectivity
aldehydes,
applicability
various
potential
large-scale
processes.
These
features
collectively
contribute
economic
sustainable
nature
both
protocol,
providing
valuable
contribution
field
hydrogenation.
Язык: Английский
The Role of Effective Catalysts for Hydrogen Production: A Performance Evaluation
Energy,
Год журнала:
2024,
Номер
unknown, С. 134257 - 134257
Опубликована: Дек. 1, 2024
Язык: Английский
Chitosan as a Bio-Based Ligand for the Production of Hydrogenation Catalysts
Molecules,
Год журнала:
2024,
Номер
29(9), С. 2083 - 2083
Опубликована: Май 1, 2024
Bio-based
polymers
are
attracting
increasing
interest
as
alternatives
to
harmful
and
environmentally
concerning
non-biodegradable
fossil-based
products.
In
particular,
bio-based
may
be
employed
ligands
for
the
preparation
of
metal
nanoparticles
(M(0)NPs).
this
study,
chitosan
(CS)
was
used
stabilization
Ru(0)
Rh(0)
(MNPs),
prepared
by
simply
mixing
RhCl3
×
3H2O
or
RuCl3
with
an
aqueous
solution
CS,
followed
NaBH4
reduction.
The
formation
M(0)NPs-CS
confirmed
Fourier
Transform
Infrared
Spectroscopy
(FT-IR),
Differential
Scanning
Calorimetry
(DSC),
Thermal
Gravimetric
Analysis
(TGA),
Electron
Microscopy
(SEM),
Energy-Dispersive
X-ray
(EDX),
Transmission
(TEM)
Diffraction
(XRD).
Their
size
estimated
below
40
nm
Rh(0)-CS
10nm
Ru(0)-CS
SEM
analysis.
were
hydrogenation
(E)-cinnamic
aldehyde
levulinic
acid.
Easy
recovery
liquid-liquid
extraction
made
it
possible
separate
catalyst
from
reaction
Recycling
experiments
demonstrated
that
highly
efficient
up
four
times
in
best
conditions.
data
found
study
show
CS
is
excellent
ligand
nanoparticles,
allowing
production
some
most
efficient,
selective
recyclable
catalysts
known
literature.
Язык: Английский
Ruthenium‐Catalyzed Chemoselective Olefin Transfer Hydrogenation of alpha,beta‐Unsaturated Carbonyl Systems By Using EtOH as Hydrogen Source
ChemCatChem,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 30, 2024
Abstract
The
use
of
EtOH
as
hydrogen
donor
is
remarkably
under
explored
in
transfer
hydrogenation
reactions,
even
though
represents
an
appealing
source.
With
the
cationic
ruthenium
complex
[Ru(PYA)(cymene)]
+
,
1
containing
a
N,N‐bidentate
amino‐functionalized
pyridinium
amidate
(PYA)
ligand
catalyst
precursor,
we
here
demonstrate
first
example
chemoselective
room
temperature
C═C
bond
α,β‐unsaturated
ketones
using
benign
source
to
yield
variety
functionalized
ketones.
reaction
proceeds
mild
conditions
with
K
2
CO
3
base
and
conventiently
at
temperature.
A
broad
substrate
scope,
including
various
carbonyl
groups,
demonstrates
general
applicability
this
method.
Preliminary
mechanistic
studies
suggest
formation
alkoxide
[
]–OEt
initially
formed
species,
requirement
for
induce
hydride
transfer,
suggesting
protic
activation
catalyst.
Язык: Английский