Lab'InSight Fermentation dans l'industrie alimentaire, du 29.10.2015. Organisé par le Réseau LIEU à Gembloux Agro Biotech Présentation de Frédéric Debaste, chercheur au TIPs

1. TIPS
Transfers,
Interfaces
and
Processes
Ecole
Polytechnique
de
Bruxelles
UNIVERSITÉ
LIBRE
DE
BRUXELLES
Prof.
Frédéric
Debaste
Chargé
de
cours
«
Drying
of
yeast
op0misa0on
»
FERMENTATION
IN
THE
FOOD
INDUSTRY
:
Managing
Living
Organisms
to
op0mize
your
Produc0on

2. Pore
scale
Grain
scale
Reactor
scale
FIELDS
OF
EXPERTISE
 Drying
(of
yeast)
opera0on
design
and
op0miza0on
 In
fluidized
bed,
spray
dryer,
spouted
bed
 Mul0scale
modelling
of
drying
 Analysis
of
local
drying
condi0ons
and
their
impact
on
drying

3. A
FINE
ANALYSIS
OF
ACTIVITY
LOSS
DURING
DRYING
 First
on
small
amounts
of
yeast
:
 Analysis
of
shrinkage
and
viability
 For
various
controlled
drying
condi0ons
 Valid
for
a
strain
(with
given
carrier
and
encapsula0ng
agent)

4. A
FINE
ANALYSIS
OF
ACTIVITY
LOSS
DURING
DRYING
 Ini0al
drying
rate
is
the
key
phenomenon
 Correla0on
shrinkage
–
viability

5. A
FINE
ANALYSIS
OF
ACTIVITY
LOSS
DURING
DRYING
 Up-­‐scaling
the
result
 Directly
from
the
experiments
 Toward
mathema0cal
modelling
By
characterizing
the
dryer
(flow,
temperature,
humidity)
 Measurment
(pilot
scale)
 Modelling
(pilot
and
industrial
scale)

6. A
FINE
ANALYSIS
OF
ACTIVITY
LOSS
DURING
DRYING
 Results
 x1,25
viability
at
pilot
scale
in
fluidized
bed
(at
fixed
drying
0me)
 x1,15
viability
gain
if
going
to
spouted
bed,
but
further
op0mizable
 Possibility
to
iden0fy
best
reactor
for
a
given
strain

7. SERVICE
PROPOSAL
AUDIT/ANALYSIS
RESEARCH
 Faster
evalua0on
of
viability
of
a
strain
under
various
drying
condi0ons
 Reactor
«
killing
zone
»
iden0fica0on
by
modelling
 Further
inves0ga0on
of
solutes
role
in
viability
 Development/op0misa0on
of
enhanced
dryers
 Extensions
to
spray
drying

8. PROF.
FRÉDÉRIC
DEBASTE
Chargé
de
cours
fdebaste@ulb.ac.be
+32
26506756
@
TIPS
Transfers,
Interfaces
and
Processes
Ecole
Polytechnique
de
Bruxelles
UNIVERSITÉ
LIBRE
DE
BRUXELLES