The student's manual of yeast culture / by Grove Johnson.

  • Johnson, Grove.
Date:
[1908?]
Catalogue details

Licence: In copyright

Credit: The student's manual of yeast culture / by Grove Johnson. Source: Wellcome Collection.

    111/220 (page 85)
    PURE YEAST PROPAGATED IN COMMERCIAL QUANTITIES. WE are now in a position to consider the ways and means whereby the pure cultures contained in the Pasteur flasks may be propagated so that a sufficiency of yeast may be produced to ferment volumes of wort approaching commercial quantities. A succession of vessels must be provided on a graduated scale; for example, the yeast from a two litre Pasteur flask may be sown in two or three gallons of wort, the yeast from the latter volume may be sown in 12 to 18 gallons, and so on.