Pretreatment
of
lignocellulosic
biomass
remains
the
primary
obstacle
to
profitable
use
this
type
in
biorefineries.
The
challenge
lies
recalcitrance
lignin-carbohydrate
complex
pretreatment,
especially
difficulty
removing
lignin
access
carbohydrates
(cellulose
and
hemicellulose).
This
study
had
two
objectives:
(i)
investigate
effect
reactive
extrusion
on
terms
delignification
percentage
structural
characteristics
resulting
extrudates,
(ii)
propose
a
novel
pretreatment
approach
involving
technology
based
results
first
objective.
Two
types
biomasses
were
used:
agricultural
residue
(corn
stover)
forest
(black
spruce
chips).
By
optimizing
conditions
via
response
surface
analysis
(RSA),
percentages
significantly
improved.
For
corn
stover,
yield
increased
from
2.3%
27.4%,
while
increasing
1%
25.3%
for
black
chips.
highest
achieved
without
sodium
hydroxide
temperatures
below
65
°C.
Furthermore,
optimized
extrudates
exhibited
important
changes
any
formation
p-cresol,
furfural,
5-hydroxymethylfurfural
(HMF)
(enzymes
microbial
growth-inhibiting
compounds).
Acetic
acid
however
was
detected
stover
extrudate.
included
disorganization
most
recalcitrant
functional
groups,
reduction
particle
sizes,
increase
specific
areas,
appearance
microscopic
roughness
particles.
Analyzing
all
data
led
new
promising
biomasses.
involves
combining
biodelignification
with
white
rot
fungi
improve
enzymatic
hydrolysis
carbohydrates.
