Page 60 - Ethel D. Hume - Bešam ili Paster: Izgubljeno poglavlje u istoriji biologije

BfiCHAMP'S BEACON EXPERIMENT
57
BfiCHAMP PASTEUR
conclusions: conclusions:
That the inversion of cane- A lactic ferment takes birth
sugar is due to moulds, which spontaneously, as easily as beer-
are living organisms, im- yeast, in the body of the albu-
ported by the air, and whose minoid liquid furnished by
influence upon cane-sugar the soluble part of the yeast.
may be compared with that The lactic ferment is a living
exercised upon starch by dias- being, though this conclusion
tase. That creosote prevents is among an order of things
the invasion ofmoulds, though that cannot be irrefutably demons-
it does not check their de- trated.
velopment when once estab-
ALCOHOLIC FERMENTATION 1
lished.
Experiment with two equal
quantities of fresh yeast
washed in water. One was
left to ferment with pure
sugared water, and after
extracting from the other all
its soluble part by boiling it
with plenty of water and
filtering it to get rid of the
globules, as much sugar was
added to the limpid liquor as
was added in the first fer-
mentation, and then a trace
of fresh yeast.
conclusions:
That in beer-yeast it is not
the globules that play the
principal part, but the con-
version into globules of their
soluble part, since the globules
may be killed by a tempera-
ture of ioo° when fermenta-
tion takes place spontaneously.
The splitting of sugar into
alcohol and into carbonic
acid is an act correlative of a
vital phenomenon.

(i) Comptes Rendus, 45, p. 1032.
See also Annates de Chitnie et de Phy-
sique, 3e sdrie, 52, p. 404.