Scientific Reports,
Journal Year:
2023,
Volume and Issue:
13(1)
Published: Nov. 15, 2023
This
study
addresses
the
environmental
risks
associated
with
accumulation
of
keratin
waste
from
poultry,
which
is
resistant
to
conventional
protein
degradation
methods.
To
tackle
this
issue,
microbial
keratinases
have
emerged
as
promising
tools
for
transforming
resilient
materials
into
valuable
products.
We
focus
on
Metalloprotease
(MetPr)
gene
isolated
novel
Pichia
kudriavzevii
YK46,
sequenced,
and
deposited
in
NCBI
GenBank
database
accession
number
OQ511281.
The
MetPr
encodes
a
consisting
557
amino
acids
demonstrates
keratinase
activity
164.04
U/ml.
3D
structure
was
validated
using
Ramachandran's
plot,
revealing
that
93%
97.26%
residues
were
situated
within
most
favoured
region
proteins
template
strain
129
respectively.
Computational
analyses
employed
determine
binding
affinities
between
deduced
beta
keratin.
Molecular
docking
studies
elucidated
optimal
metalloprotease
beta-keratin,
yielding
values
-
260.75
kcal/mol
257.02
strains
Subsequent
molecular
cloning
expression
E.
coli
DH5α
led
significantly
higher
281
±
12.34
These
findings
provide
insights
potential
its
encoded
biotransformation,
implications
addressing
concerns
related
keratinous
accumulation.
Gels,
Journal Year:
2023,
Volume and Issue:
9(7), P. 556 - 556
Published: July 7, 2023
Biopolymers
represent
a
great
resource
for
the
development
and
utilization
of
new
functional
materials
due
to
their
particular
advantages
such
as
biocompatibility,
biodegradability
non-toxicity.
“Intelligent
gels”
sensitive
different
stimuli
(temperature,
pH,
ionic
strength)
have
applications
in
many
industries
(e.g.,
pharmacy,
biomedicine,
food).
This
review
summarizes
research
efforts
presented
patent
non-patent
literature.
A
discussion
was
conducted
regarding
biopolymer-based
hydrogels
natural
proteins
(i.e.,
fibrin,
silk
fibroin,
collagen,
keratin,
gelatin)
polysaccharides
chitosan,
hyaluronic
acid,
cellulose,
carrageenan,
alginate).
In
this
analysis,
latest
advances
modification
characterization
advanced
biopolymeric
formulations
state-of-the-art
administration
drug
delivery,
wound
healing,
tissue
engineering
regenerative
medicine
were
addressed.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(14), P. 1999 - 1999
Published: July 12, 2024
Keratin
is
a
structural
fibrous
protein
and
the
core
constituent
of
animal
by-products
from
livestock
such
as
wool,
feathers,
hooves,
horns,
pig
bristles.
This
natural
polymer
also
main
component
human
hair
present
at
an
important
percentage
in
skin.
Significant
amounts
keratin-rich
tissues
are
discarded
worldwide
each
year,
ca.
12
M
tons,
share
used
for
keratin
extraction
added-value
applications
still
very
low.
An
stream
new
potential
raw
materials,
represented
by
hair,
thus
being
lost,
while
large-scale
valorization
could
contribute
to
circular
bioeconomy
reduction
environmental
fingerprint
those
tissues.
Fortunately,
scientific
research
has
made
much
progress
last
10–15
years
better
understanding
complex
architecture
its
variability
among
different
tissues,
development
tailored
processes,
screening
applications.
Hence,
this
review
aims
discussion
recent
findings
characterization
by-product
structures,
well
recovery
conventional
emerging
techniques
advances
several
fields.
Antioxidants,
Journal Year:
2024,
Volume and Issue:
13(3), P. 305 - 305
Published: Feb. 29, 2024
Unconventional
feed,
which
is
abundant
in
China,
contains
anti-nutritional
factors
and
toxins;
however,
these
can
be
greatly
reduced
with
microbial
fermentation,
thus
improving
the
nutrient
content
of
enhancing
animal
appetites,
ultimately
significantly
intestinal
health
growth
performance
animals.
When
oxidative
stress
occurs,
fermented
feed
effectively
reduce
damage
caused
by
to
gastrointestinal
tract,
accelerate
removal
abnormalities,
improve
ability
resist
stress,
ensure
efficient
production
This
review
introduces
application
unconventional
production,
expounds
upon
function
animals
symptoms,
so
as
provide
a
theoretical
reference
for
development
antioxidative
reduction.
Processes,
Journal Year:
2024,
Volume and Issue:
12(2), P. 358 - 358
Published: Feb. 8, 2024
Food
waste,
particularly
animal-derived
presents
a
significant
challenge
globally,
prompting
the
need
for
sustainable
management
strategies.
In
2022,
amount
of
food
waste
per
capita
reached
131
kg/capita
in
EU
(European
Union),
which
is
why
search
environmentally
friendly
ways
to
manage
through
thermochemical
conversion
processes
has
gained
momentum
recent
years.
Animal-derived
good
source
organic
matter
(proteins,
lipids,
and
polysaccharides)
mineral
compounds
(calcium
phosphate,
mostly
hydroxyapatite).
This
composition
makes
valuable
extraction
chemical
compounds,
such
as
hydroxyapatite
(HAp),
constitutes
up
70
wt%
animal
bones;
keratin;
collagen;
hyaluronic
acid
(HA),
produce
pharmaceutical,
medical,
or
industrial
by-products.
The
chicken
bones
pyrolysis
gasification
creates
new
opportunity
valorize
this
type
by
reintroducing
by-products
into
economy
thus
achieving
objectives.
results
study
showcase
multiple
applications
bone
products
(as
adsorbents
aqueous
mediums,
catalysts,
fertilizers,
biomedical
applications)
necessity
better
exploration
process
waste.
Therefore,
explores
properties
discusses
influence
conditions
on
product
yields,
catalytic
enhancement
these
processes.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
945, P. 173910 - 173910
Published: June 15, 2024
Approximately
1.3
billion
metric
tons
of
agricultural
and
food
waste
is
produced
annually,
highlighting
the
need
for
appropriate
processing
management
strategies.
This
paper
provides
an
exhaustive
overview
utilization
agri-food
as
a
biosorbents
elimination
volatile
organic
compounds
(VOCs)
from
gaseous
streams.
The
review
underscores
critical
role
in
context
circular
economy,
wherein
not
viewed
final
product,
but
rather
valuable
resource
innovative
processes.
perspective
consistent
with
principles
efficiency
sustainability.
Various
types
have
been
described
effective
biosorbents,
methods
preparation
discussed,
including
thermal
treatment,
surface
activation,
doping
nitrogen,
phosphorus,
sulfur
atoms.
further
investigates
applications
these
adsorbing
VOCs
streams
elucidates
primary
mechanisms
governing
adsorption
process.
Additionally,
this
study
sheds
light
on
regeneration,
which
key
aspect
practical
applications.
concludes
commentary
discussion
future
perspectives
field,
emphasizing
more
research
innovation
to
fully
realize
potential
economy.
serves
researchers
practitioners
interested
use
removal,
marking
significant
first
step
toward
considering
aspects
together.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(3), P. 2278 - 2278
Published: Jan. 26, 2023
Animal
waste
can
serve
as
a
raw
material
source
for
feed
preparation,
and
also
be
used,
after
appropriate
processing,
fuel,
fertilizer,
biogas,
other
useful
products.
In
addition,
the
practical
use
of
these
wastes
eliminates
their
mandatory
disposal.
Recycling
animal
is
feature
circular
economy,
leading
to
environmental
sustainability.
this
regard,
we
conducted
search
review
contemporary
scientific
publications
from
open
sources,
including
data
Internet
portals,
Web
Science,
Scopus
scientometric
databases,
websites
patent
offices,
libraries,
reading
rooms.
It
has
been
found
that
by-products
are
desirable
in
combination
with
vegetable
protein
sources.
The
15
most
relevant
types
indicated
based
on
current
publications.
Moreover,
13
origin,
along
purposes
descriptions,
identified.
Current
research
processing
insects
into
feed;
bird
droppings,
meat,
bone
meal;
seafood
waste,
eggshells
reviewed.
As
result,
firstly,
important
technological
equipment
involved
technologies,
particularly
devices
drying,
grinding,
mixing,
analyzed
discussed.
Secondly,
technologies
products
origin
