Germination Tech Flashcards
What is the process of transferring chitted grain to the germination vessel called?
The chitted grain is transferred to the germination vessel wet or dry.
In malt plants, what are batches of malting barley called?
Pieces
What is the traditional method of germinating grain called?
Floor maltings
What is the typical depth of the barley bed in traditional germination systems?
10-20 cm
What is the purpose of turning barley manually in floor maltings?
To prevent rootlets intertwining and to remove heat.
How is temperature control and airflow regulated in traditional germination systems?
By louvred windows in the maltings room.
What are the common features of modern germination vessels?
- Stainless steel wedge-wire or perforated floor
- Means of turning the grain bed
- Pressure fan with air humidification unit and recirculation ducts
- Means of blowing cool, moist air through the grain bed
What is the main function of blowing cool, moist air through the grain bed?
- Prevent overheating
- Prevent grain drying out too quickly
- Remove carbon dioxide
What are the two types of modern germination vessels?
- Germination boxes (Saladin boxes)
- Circular germination vessels
How long can modern Saladin boxes be?
Over 50 m long
What is the capacity of modern Saladin boxes in terms of barley?
Over 300 t barley
What mechanism is used to turn the grain bed in a Saladin box?
Helical screws
What is the function of the helical screws in a Saladin box?
To turn the bed and move the grain from the bottom.
What is the purpose of moisture level maintenance in a Saladin box?
To maintain the appropriate moisture level in the bed.
How do circular vessels compare to Saladin boxes?
They operate similarly but are circular.
What is the Wanderhaufen system?
A system where germinating malt is moved in steps along an extended box.
How often is the germinating malt moved in the Wanderhaufen system?
Twice daily over an eight-day cycle.
What is the speed at which grain pieces are moved in the Wanderhaufen system?
20-30 cm/min
How many sections does the Wanderhaufen system have for airflow control?
16 sections
What is the main goal of the specialized turners in the Wanderhaufen system?
To minimize mixing while moving the grain pieces.
