Year: 1885

page_text: I WILLIAM STEVENS SQUIRE of Clarendon House, St Johns Wood Park, London,
N.W, in the county of Middlesex, Chemical Engineer, do hereby declare the
nature of this invention to be as follows:-
This invention consists in the growth of yeast in saccharine solutions well suited
for its development. In order to do this, I first prepare a solution of "Peptonised.
Maltose" either directly, as described in my specification, dated Oct 7th 1885, and
numbered 11935, or by dissolving in water the semisolid substance (obtained by
previously evaporating that solution) which is known by the name of "Peptonised
Maltose." The solution is so prepared that it has a specific gravity of about 1080,
and a temperature of from 70° to 75° F. This is called "Solution No 1.".
I also prepare a wort by mashing either ground malt alone, or a mixture of
ground malt with ground raw grain, preferably rye, wheat, oats, barley, or maize,
or a mixture of any or all of them at a temperature of about 140° F. The wort is
then strained off, and separated from the solid matters, and clear spent wash,
resulting from a previous distillation, is added to it, in such quantity that the
mixture obtained shall have an acidity represented by about half a per cent of
lactic acid, a specific gravity of about 1040, and a temperature of about 80° F.
This is called "Solution No 2"
In order to grow the yeast, a quantity of yeast is added to "Solution No 1," and
fermentation is allowed to proceed for about 10 or 12 hours. At the end of this
time the fermenting solution No 1 is added to Solution N° 2. Fermentation is
then set up through the whole mixture, and when a head of yeast rises to the top,
it is removed, washed, and pressed.

page_text: Improvements in the Manufacture of Yeast.
I, WILLIAM STEVENS SQUIRE, of Clarendon House, St John's Wood Park, London,
Chemical Engineer, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained
in and by the following statement :-
This invention relates to a process for effecting the growth of yeast in saccharine
solutions well suited for its development. In order to do this, I first prepare a
solution of the substance, which I call "Peptonised Maltose" either directly as
described in my specification dated Oct 7th 1885 and numbered 11,935, or by
dissolving in water the semi solid substance obtained by previously evaporating
that solution. The solution is so prepared that it has a specific gravity of
'about 1080, and a temperature of from 70° to 75° F; this is called solution N° 1.
I also prepare a wort by mashing at a temperature of about 140° F either ground
malt alone, or a mixture of ground malt with ground raw grain preferably rye,
wheat, oats, barley or maize or a mixture of any or all of them. The wort is then
strained off and separated from the solid matters and clear spent wash resulting from
a previous distillation is added to it in such quantity that the mixture so obtained
shall have a specific gravity of about 1040 and an acidity such that 100 parts of
the mixture shall be neutralised by about 4 parts of a soda solution consisting of
40 parts of hydrate of soda dissolved in 1000 parts of water. This is called
solution No 2.
In order to grow the yeast, a quantity of yeast is first added to solution No 1
and fermentation is allowed to proceed for about 10 or 12 hours. At the end of
this time the fermenting solution No 1 is added to solution No 2 previously brought
to about 80° Fahr. Fermentation is then set up through the whole mixture, and
when a head of yeast rises to the top it is removed, washed and pressed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The manufacture of yeast by adding peptonised maltose solution in course of
fermentation to a mixture of wort cleared of solid matters and spent wash, prepared
as herein described, and fermenting the whole, substantially as herein set forth.
Dahin toth dan of T... 1000