Biotechnology for Biofuels and Bioproducts,
Journal Year:
2024,
Volume and Issue:
17(1)
Published: May 10, 2024
Abstract
Botryococcus
braunii
,
a
colonial
green
microalga
which
is
well-known
for
its
capacity
to
synthesize
hydrocarbons,
has
significant
promise
as
long-term
source
of
feedstock
the
generation
biofuels.
However,
cultivating
and
scaling
up
B.
using
conventional
aqua-suspended
cultivation
systems
remains
challenge.
In
this
study,
we
optimized
medium
components
light
intensity
enhance
lipid
hydrocarbon
production
in
multi-cultivator
airlift
photobioreactor.
BBM
3N
with
200
μmol/m
2
/s
16
h
light–8
dark
regimen
yielded
highest
biomass
productivity
(110.00
±
2.88
mg/L/day),
well
content.
Cultivation
flat-panel
bioreactor
resulted
significantly
higher
(129.11
2.74
(32.21
1.31
(28.98
2.08
mg/L/day)
compared
Erlenmeyer
flasks
open
20-L
raceway
pond.
It
also
exhibited
20.15
1.03%
protein
content
including
elevated
levels
chlorophyll
b
carotenoids.
This
work
noteworthy
since
it
first
describe
fatty
acid
profiles
during
cobalt
treatment.
The
study
demonstrated
that
high
concentrations
(up
5
mg/L
nitrate)
culture
affected
synthesis,
resulting
amounts
n
-alkadienes
trienes
lipids
monounsaturated
acids
concentration.
Furthermore,
pyrolysis
experiments
on
microalgal
de-oiled
revealed
compounds
generated
by
thermal
degradation
facilitate
extra
economical
value
system.
Processes,
Journal Year:
2025,
Volume and Issue:
13(5), P. 1345 - 1345
Published: April 28, 2025
Sargassum
filipendula
is
a
marine
macroalgae,
also
known
as
brown
algae.
These
species
contain
significant
amounts
of
polysaccharides,
such
alginates,
and
phenolic
compounds,
including
phlorotannins,
with
excellent
biological
properties.
This
study
evaluated
the
extraction
bioactive
compounds
from
residual
biomass
using
deep
eutectic
solvents
based
on
alkanol
amines
combined
polyols.
The
presented
content
7.36%
protein,
1.11%
lipids,
20.51%
ash,
14.88%
moisture,
50.25%
total
fibers,
5.89%
alginate.
Preliminary
screening
identified
N,
N-(dimethylamino)-ethanol:
benzyl
alcohol
(1.30:1)
N-(dimethylamino)-ethanol:1,3-propanediol
(1.83:1)
most
efficient
for
compounds.
optimization
process
showed
that
temperature
solid–liquid
ratio
significantly
influenced
(p
<
0.05)
photosynthetic
pigments.
Intermediate
temperatures
(74.4
°C
68.4
(1.83:1),
lower
solid-to-liquid
(0.03)
were
optimal
conditions
to
extract
low-pigment
phlorotannins
selectively.
In
contrast,
higher
(120
°C)
maximized
(1.30)
extracted
110.64
mg
PGE/g
78.15
GAE/g
phenolics,
while
produced
21.57
72.89
GAE/g,
respectively.
pigments
reached
maximum
yield
at
120
°C,
(1.30:1),
21.61
µg/g
chlorophylls
38.11
pheophytins,
1,3-propanediol
provided
17.76
36.32
µg/g,
extracts
exhibited
antioxidant
activity
0.69
TE/mL
in
scavenging
DPPH
radicals,
24.42
ABTS
2.26
iron-reducing
power.
results
demonstrate
potential
DESs
sustainable
recovery
biomass.
