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Transfers, Interfaces and Processes (TIPs) ULB

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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
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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  

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    

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)  

A  FINE  ANALYSIS  OF  ACTIVITY  LOSS  DURING  DRYING  

  Ini0al  drying  rate  is  the  key  phenomenon    

  Correla0on  shrinkage  –  

viability  

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)    

 

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  

 

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  

 

PROF.  FRÉDÉRIC  DEBASTE  Chargé  de  cours                    [email protected]                    +32  26506756    

@

TIPS  Transfers,  Interfaces  and  Processes  Ecole  Polytechnique  de  Bruxelles  

UNIVERSITÉ  LIBRE  DE  BRUXELLES  


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