ACS Omega,
Journal Year:
2023,
Volume and Issue:
8(40), P. 36655 - 36661
Published: Sept. 29, 2023
Molecular
behavior
of
rhamnolipid
mixed
with
a
biobased
zwitterionic
surfactant
at
an
n-hexadecane/water
interface
has
been
studied,
and
the
effects
rhamnose
moiety
composition
are
evaluated.
Results
showed
that
abundantly
interacts
EAB
by
means
hydrophobic
interactions
between
aliphatic
tails
electrostatic
headgroups,
including
attractive
interaction
COO-
rhamnolipids
N+
surfactants
repulsive
both
surfactants.
Dirhamnolipid
larger
number
bound
Na+
more
stable
structure
∼
Na+,
which
screens
two
kinds
shows
homogeneous
distribution
The
interfacial
tension
n-hexadecane
water
synergistically
reduced
dirhamnolipids
higher
molar
ratio
Monorhamnolipids
show
strengthened
hydrogen
bond
relative
to
dirhamnolipids,
there
is
no
synergistic
effect
in
lowering
for
mixture
monorhamnolipids
present
work
provides
details
molecular
biosurfactant
obtains
key
factor
affecting
properties
binary
system.
Journal of Hazardous Materials,
Journal Year:
2022,
Volume and Issue:
443, P. 130171 - 130171
Published: Oct. 19, 2022
Despite
the
fact
that
rhamnolipids
are
among
most
studied
biosurfactants,
there
still
several
gaps
which
must
be
filled.
The
aim
of
this
review
is
to
emphasize
and
indicate
issues
should
taken
into
account
in
order
achieve
efficient
rhamnolipids-assisted
biodegradation
or
phytoextraction
soils
contaminated
by
heavy
metals
petroleum
hydrocarbons
without
harmful
side
effects.
Four
main
topics
have
been
elucidated
review:
effective
concentration
soil,
their
potential
phytotoxicity,
susceptibility
interaction
with
soil
microorganisms.
discussed
elements
often
closely
associated
overlap,
thus
making
interpretation
research
results
all
more
challenging.
Each
dedicated
section
includes
a
description
questions,
an
explanation
background
rationale
for
each
problem,
analysis
relevant
literature
reports
short
summary
possible
application
guidelines.
conclusion
necessity
establish
regulations
regarding
concentrations
remediation
soil.
use
improper
direct
cause
other
phenomena.
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(6), P. 5395 - 5395
Published: March 11, 2023
The
need
to
protect
human
and
environmental
health
avoid
the
widespread
use
of
substances
obtained
from
nonrenewable
sources
is
steering
research
toward
discovery
development
new
molecules
characterized
by
high
biocompatibility
biodegradability.
Due
their
very
use,
a
class
for
which
this
particularly
urgent
that
surfactants.
In
respect,
an
attractive
promising
alternative
commonly
used
synthetic
surfactants
represented
so-called
biosurfactants,
amphiphiles
naturally
derived
microorganisms.
One
best-known
families
biosurfactants
rhamnolipids,
are
glycolipids
with
headgroup
formed
one
or
two
rhamnose
units.
Great
scientific
technological
effort
has
been
devoted
optimization
production
processes,
as
well
physicochemical
characterization.
However,
conclusive
structure–function
relationship
far
being
defined.
review,
we
aim
move
step
forward
in
direction,
presenting
comprehensive
unified
discussion
properties
rhamnolipids
function
solution
conditions
rhamnolipid
structure.
We
also
discuss
still
unresolved
issues
deserve
further
investigation
future,
allow
replacement
conventional
rhamnolipids.
Integrated Environmental Assessment and Management,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 6, 2025
Abstract
Over
the
past
two
decades,
research
into
accumulation
of
small
plastic
particles
and
fibers
in
organisms
environmental
settings
has
yielded
over
7,000
studies,
highlighting
widespread
presence
microplastics
ecosystems,
wildlife,
human
bodies.
In
recent
years,
these
contaminants
have
posed
a
significant
threat
to
human,
animal,
health,
with
most
efforts
concentrated
on
removing
them
from
aquatic
systems.
Given
this
urgency,
purpose
study
was
investigate
potential
rhamnolipid,
biosurfactant,
for
removal
water.
Specifically,
evaluates
effects
water
matrix,
initial
pH
solution
(7.0,
7.5,
8.0,
8.5,
9.0,
9.5,
10.0),
concentrations
alum
(5,
10,
20,
30,
40,
50
mg/L),
rhamnolipid
(1,
5,
80,
100
mg/L).
Optimum
achieved
at
5.0
mg/L
1.0
mg/L,
respectively,
8.0.
both
types
tested,
efficiency
about
74%
determined,
indicating
as
nature-based
control
microplastic
pollution
surface
waters.
