An Improved Manufacture of a Non-fermentable Cementitious Body, Soluble in Water, from Starch.
Year: 1887

page_text: 1887
Date of Application, 14th Apr.,
Complete Left, 13th Jan., 1888
Complete Accepted, 17th Feb., 1888
An Improved Manufacture of a Non-fermentable Cementitious
Body, Soluble in Water, from Starch.
I, AUGUST SCHUHMANN of Düttlenheim Strassburg, Elsass, in the Empire of
Germany, Manufacturer do hereby declare the nature of this invention to be as
follows:-
My invention relates to the conversion of starch into a soluble nonfermentable
cementitious body that is devoid of smell and taste, and that may be used as
a substitute for known cementitious substances and substances used for finishing
fabrics.
For this purpose starch is stirred up with water to a milk of thick consistency, and
to this is added about one per cent. of a fixed acid. This mixture is allowed to stand
about 24 hours, and is then washed with fresh water until there is no trace left of the
acid. A microscopic examination will show a partial transformation of the starch
cells which adapts the same for the subsequent conversion into a soluble condition.
The precipitate thus prepared is then either dried or is mixed with water to a thick
fluid condition and is then heated, without addition of acid, and either with or without
pressure, to a temperature of from 160 to 170° Cent., either by an oil bath or by
superheated steam, it being left under this treatment until all the starch is converted,
and no further reaction takes place with iodine.
Instead of treating the starch in the cold with acid as described, the starch milk
with the acid added to it may be introduced at once into the digester and boiled until
the mass, which is first of a pasty condition, begins to become fluid, but still reacts
strongly with iodine. It is then removed, and the acid is bound, and the liquid is
by preference filtered so as to remove the cause of formation of discoloring humic
acid.
The liquid, either filtered or not filtered, is then again placed in the digester where
it is subjected to a temperature of from 160 to 170 Cent., without addition of acid, until
all the starch has become soluble.
The process may also be carried out by leaving the starchmilk mixed with acid as
described in the digester until it does not react any more with iodine, whereby a
solution free from starch but containing sugar is obtained, from which the sugar may
be removed by fermentation and subsequent distillation.

page_text: The body, soluble in water, obtained in the one or the other way, is then added to
a solution of albumen of from 20 to 25° Baumé, and is raised to boiling point, and
is then passed through either a Taylor's apparatus or a filterpress, and is refined by
means of animal charcoal or similar agents. The resulting body is then evaporated
to any desired consistency or to dryness, first adding with advantage some vegetable
mucilage. This body produces a clear solution either with hot or with cold water,
it is devoid of smell and taste and is very similar in appearance and action to gum
arabic.

page_text: An Improved Manufacture of a Non-fermentable Cementitious
Body, Soluble in Water, from Starch.
I, AUGUST SCHUHMANN of Duttlenheim Strassburg, Elsass, in the Empire of
Germany, Manufacturer, 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 :-
My invention relates to the conversion of starch into a soluble non fermentable
cementitious body that is devoid of smell and taste, and that may be used as a
substitute for known cementitious substances and substances used for finishing fabrics.
For this purpose starch is stirred up with water to a milk of thick consistency and
to this is added about one per cent. of a fixed acid. This mixture is allowed to stand
about 24 hours, and is then washed with fresh water until there is no trace left of
the acid. A microscopic examination will show a partial transformation of the starch
cells which adapts the same for the subsequent conversion into a soluble condition.
The precipitate thus prepared is then either dried or is mixed with water to a thick
fluid condition and is then heated without addition of acid, and either with or without
pressure to a temperature of from 160° to 170° Cent. either by an oil bath or by
superheated steam, it being left under this treatment until all the starch is coverted,
and no further reaction takes place with iodine.
Instead of treating the starch in the cold with acid as described, the starch milk
with the acid added to it may be introduced at once into the digester and boiled until
the mass, which is first of a pasty condition, begins to become fluid but still reacts
strongly with iodine. It is then removed and the acid is bound and the liquid is by
preference filtered so as to remove the cause of formation of discoloring humic acid.
The liquid either filtered or not filtered is then again placed in the digester where it is
subjected to a temperature of from 160° to 170° Cent. without addition of acid until
all the starch has become soluble.
The process may also be carried out by leaving the starch milk mixed with acid as
described in the digester until it does not react any more with iodine whereby a
solution free from starch, but containing sugar is obtained from which the sugar may
be removed by fermentation and subsequent distillation.
The body, soluble in water, obtained in the one or the other way, is then added to
a solution of albumen of from 20 to 25° Raumê, and is raised to boiling point and is
then passed through either a Taylor's apparatus or a filter press, and is refined by
means of animal charcoal or similar agents. The resulting body is then evaporated
to any desired consistency or to dryness first adding with advantage some vegetable
mucilage.
This body produces a clear solution either with hot or with cold water, it is devoid
of smell and taste and is very similar in appearance and action to gum arabic.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The process for the conversion of starch into a soluble nonfermentable cemen-
titious body devoid of smell and flavor, wherein starch milk, after having been treated
with acid, is first separated from the acid again and then subjected to a temperature
of from 160° to 170° Cent. until the whole of the starch is converted into a soluble
condition, after which the solution is clarified, refined, and evaporated to the required
consistency substantially as herein described."
2. The process for the conversion of starch into a soluble nonfermentable cemen-
titious body devoid of smell and flavor, wherein the starch milk treated with acid is
boiled in a digester until it no longer reacts with iodine, the saccharine solution thus
obtained being freed from sugar by fermentation and distillation and then clarified,
refined and evaporated substantially as herein described.
3. The use of the soluble cementitious body obtained by the processes set forth in
the preceding claims either alone or combined with other substances.
ABEL & IMRAY,
Agents for the Applicant.