Fuel,
Journal Year:
2022,
Volume and Issue:
334, P. 126710 - 126710
Published: Nov. 18, 2022
•
Juice
rich
in
sugars
and
a
solid
cellulose
were
recovered
from
melon
peels.
The
enzymatic
hydrolysis
of
the
was
studied
by
response
surface
assessment.
35.15
g
glucose/L
reached
after
24
h
at
selected
conditions.
SSF
separate
juice
fermentation
achieved
highest
bioethanol
yield:
17.84
g/100
using
concentrated
concentration:
56.24
g/L.
Melon
peels
can
be
low-cost
raw
material
for
production
due
to
its
high
worldwide
contents
cellulose,
protein
minerals.
In
this
work,
several
strategies
proposed
purpose.
Centrifugation
autohydrolysis
washed
used
as
pretreatment
recovery
sugar
glucan
solid,
respectively.
spent
High
glucose
concentrations
(35.15
g/L
h)
yields
obtained
operating
liquid
ratio
10
g/g
cellulase
17.5
FPU/g.
conditions,
simultaneous
saccharification
(SSF)
(virgin
concentrated)
formulation
media.
Moreover,
also
evaluated,
well
pre-fermentation
followed
SSF.
Finally,
scenarios
proposed,
achieving
maximum
(17.84
peel),
concentration
medium
(56.24
g/L).
Industrial Crops and Products,
Journal Year:
2023,
Volume and Issue:
203, P. 117157 - 117157
Published: July 12, 2023
This
study
dealt
with
the
use
of
environmentally
friendly
processes
based
on
microwave-assisted
autohydrolysis
(MAA)
and
deep
eutectic
solvents
(DES)
for
selective
fractionation
Robinia
pseudoacacia
wood
(RW)
within
a
biorefinery
approach.
MAA
enabled
recovery
76%
hemicelluloses
in
form
oligomers.
Afterwards,
different
conditions
were
assessed
optimal
delignification
RW
DES
choline
chloride
combined
lactic
acid
reaching
ratios
up
to
86%.
Two
methods
accomplished
valorize
cellulosic-rich
solid
fraction
after
delignification:
(i)
bioethanol
via
enzymatic-fermentative
pathway
(attaining
53.3
g
ethanol/L,
about
83%
ethanol
yield),
(ii)
cellulose
nanocrystals
(length
27–550
nm,
width
2–12
nm).
Hence,
this
presents
novel
multiproduct
selectively
separate
main
components
its
cellulosic
using
eco-friendly
procedures.
Antioxidants,
Journal Year:
2023,
Volume and Issue:
12(6), P. 1156 - 1156
Published: May 26, 2023
Avocado
seeds
represent
the
chief
waste
produced
in
avocado
processing,
leading
not
only
to
environmental
problems
regarding
its
elimination
but
a
loss
of
economic
profitability.
In
fact,
are
known
as
interesting
sources
bioactive
compounds
and
carbohydrates,
so
their
utilization
may
reduce
negative
effect
during
industrial
manufacture
avocado-related
products.
this
sense,
deep
eutectic
solvents
(DES)
novel
greener
alternative
than
organic
extract
polyphenols
carbohydrates.
The
study
was
based
on
Box-Behnken
experimental
design
three
factors,
temperature
(40,
50,
60
°C),
time
(60,
120,
180
min)
water
content
(10,
30,
50%
v/v)
responses
total
phenolic
(TPC)
flavonoid
(TFC),
antioxidant
capacity
(measured
ABTS
FRAP)
xylose
extract.
DES
Choline
chloride:glycerol
(1:1)
used
solvent
seed.
Under
optimal
conditions,
TPC:
19.71
mg
GAE/g,
TFC:
33.41
RE/g,
ABTS:
20.91
TE/g,
FRAP:
15.59
TE/g
xylose:
5.47
g/L
were
obtained.
tentative
identification
eight
assayed
via
HPLC-ESI.
carbohydrate
solid
residue
also
evaluated,
that
subjected
two
different
processing
(delignification
with
microwave-assisted
autohydrolysis)
increase
glucan
susceptibility
enzymes,
reaching
almost
quantitative
glucose
yields.
These
results,
added
non-toxic,
eco-friendly,
nature
DES,
demonstrate
these
an
efficient
recover
phenolics
carbohydrates
from
food
wastes.
Fermentation,
Journal Year:
2023,
Volume and Issue:
9(7), P. 589 - 589
Published: June 24, 2023
This
study
proposes
an
efficient
strategy
for
co-producing
high-value-added
xylooligosaccharides
(XOS)
and
humic-like
acid
(HLA)
from
vinegar
residue
based
on
two-step
hydrothermal
pretreatments.
During
the
first-step
pretreatment
(170
°C,
50
min),
29.1%
of
XOS
(X2-X6)
was
obtained.
The
yield
further
improved
to
36.2%
with
endoxylanase
hydrolysis,
thereby
increasing
value
(X2-X4)/XOS
0.8
1.0.
Subsequently,
second-step
investigated
produce
HLA
solid
pretreatment.
highest
15.3%
in
presence
0.6
mol/L
KOH
at
210
°C
13
h.
In
addition,
31.7%
hydrochar
by-product
mass
balance
results
showed
that
1000
g
produced
67.9
XOS,
91.6
HLA,
189.5
hydrochar.
Therefore,
this
provides
a
promising
pathway
comprehensive
use
lignocellulosic
biomass
producing
HLA.
