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       CODE: 022.381-010 Buy the DOT:Download/CD-ROM
TITLE(s): YEAST-CULTURE DEVELOPER (beverage)
Selects and cultivates yeast cells to develop pure yeast culture for brewing beer and malt
liquors: Samples beer in fermenting stages to select specimens containing yeast cells having
specific reproduction characteristics. Prepares cover glasses and slides with smears of yeast
preparation taken from beer samples. Examines slides under microscope to isolate specific cells and
record position of cells. Incubates slides to allow colonies of cells to form. Inoculates cells with
hopped wort, using sterile needle to transfer cells from slides to flasks containing wort.
Cultivates cells in flasks by incubation and propagates single cell cultures by transferring cells
to additional flasks. Siphons developing yeast culture from flasks to tanks and pumps yeast culture
from tanks to sterile barrels. Seals barrels with sterile bung and packs sealed barrels in dry ice
to prevent yeast degeneration. Cleans and sterilizes equipment.
GOE: 02.04.02 STRENGTH: M GED: R4 M2 L4 SVP: 5 DLU: 77
ONET CROSSWALK: 24505B Food Science Technicians
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