6 Station Road

Coleshill

West Midlands 

B46 1HT

Tel: 01675 465 191

Fax: 01675 464 429

sc
 
 

SCANDI BREW®

 
 

"The" route for Scandibrew products from the No. 1 Alfa Laval Channel in the UK   

 
 
 

 SINGLE VESSEL YEAST PROPAGATION PLANT

 
 

 Yeast Propagation  

 
 

Application
For batch-wise propagation of yeast culture under sterile conditions
with the purpose of renewing the yeast supply. The
single vessel propagation plant requires inoculation with laboratory-
propagated yeast at each propagation.
Inoculation via Carlsberg Flask is foreseen.


Construction
The plant consists of a specially designed and manufactured
propagation vessel with a unique top plate comprising all the
necessary equipment for complete sanitary operation such as
pressure regulator, pressure relief valve, anti-vacuum valve, level
probe and aeration lance with air dissolver or for larger tanks
hollow shaft mixer. The plant is pre-erected in the workshop
and dry tested before dispatch, making local erection very easy
and simple. The plants are only supplied as turnkey modules.
Standard working capacities up to 100 hl working volume.
The plant can be supplied with an integrated CIP-station.
Degree of automation ranges from semi-automatic to fully
automatic.


Operation
After CIP and steam sterilisation, the propagation vessel is
filled with hot or cold wort. Wort is then sterilised by means of
the heating jacket on the cone and thereafter cooled by
means of the cooling jacket on the cylindrical part. Before
inoculation, the wort is aerated with sterile air. The vessel is
hereafter inoculated with pure yeast culture from a Carlsberg
Flask under sterile and aseptic conditions.


During propagation, temperature is maintained at a set level
and the propagating yeast is aerated according to the particular
strains requirement.


When the yeast has reached the required cell concentration,
it is pitched into an intermediate fermenter or directly into a
brew in a fermenter.

 


 

Benefits
• Aeration device for unstressed yeast with maximum vitality
and viability
• All process valves and fittings are uniquely designed for
propagation
• Lower investment cost compared to multi vessel plants
• A reliable and safe supply of uninfected, freshly propagated
yeast
• Easy operation and well proven technology
• Flexibility for propagating different strains of yeast when
needed
• Batch process to match one brew without internal plant
transfers

Cleaning
Before any operation or transport all lines are flushed with
water and steam sterilised. The plant is cleaned from an integrated
or external CIP plant.


Mounting
The plant is pre-erected and dry tested before dispatch.
It is marked in our workshop for easy assembly at the brewery
according to enclosed manuals.
Maintenance
The valves should be checked and gaskets changed at regular
intervals. The filter insert is to be replaced every 2 years,
as a minimum.
 


Extra Equipment
• Integrated CIP plant
• Carlsberg Flask
• Hygienic yeast mixer
• Connection to wort line by flow panel or mix-proof valve
• Pitching pump for in-line dosing
• Equipment for intermediate fermenting vessel
• Steam reduction station
• Additional filters for sterile filtration of air

 

 

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