Manufacture of Casein Compounds.
Year: 1894

page_text: Date of Application, 16th Nov., 1894
Complete Specification Left, 15th Aug., 1895-Accepted, 21st Sept., 1895
[Communicated from abroad by THE FARBWERKE, vormals MEISTER LUCIUS
AND BRUNING, of Hoechst a/Main, Germany, Chemical Manufacturers.]
Manufacture of Casein Compounds.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Chartered Patent Agent, do hereby declare the nature of
this invention to be as follows:-
Casein is a compound insoluble in water possessing the character of an acid.
Hitherto compounds of caseïn with alkalies and alkaline earths have only been
obtained in solution. The present invention relates to a new method which makes
it possible to prepare the alkali-salts and the calcium-salt in the form of dry
powders.
There are two series of caseïn-salts which are distinguished by their behaviour
towards phenolphthalein and the ferment of rennet :
1) The compounds neutral to phenolphthalein, which do not coagulate with
rennet and
2) The compounds which react acid to phenolphthalein and are coagulated by
rennet in presence of calcium salts.
In the compounds which react acid about of the quantity of the base is bound
which is contained in the neutral salts.
The salts of caseïn which are neutral and acid to phenolphthalein are according
to this invention prepared by dissolving casein in the calculated quantity of alkali,
milk of lime or their substitutes, namely, alkaline carbonates or phosphates and
evaporating the solution in vacuo.
The following is an example of the preparation of the neutral or acid sodium-
salt of casein
3 kilos. caseïn are dissolved in 3 litres of water with 218 grammes or
152 grammes bicarbonate of soda or the equivalent quantity of caustic soda, and
the water is completely evaporated in vacuo,-overheating being avoided.
If for the caustic soda or the carbonate of soda is substituted the equivalent
quantity of milk of lime, the calcium salts are obtained by operating in the
same way.
The salts of casein which react neutral or acid to phenolphthalein form white
powders soluble in water.
Dated this 16th day of November 1894.
ABEL & IMKAY,
Agents for the Applicant.
acture T
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in
the County of London, Chartered Patent Agent, 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 :-
Casein is a compound insoluble in water possessing the character of an acid.

page_text: Hitherto compounds of caseïn with alkalies and alkaline earths have only been
obtained in solution. The present invention relates to a new method which makes
it possible to prepare the alkali-salts and the calcium-salt in the form of dry
powders.
+
There are two series of caseïn-salts which are distinguished by their behaviour
towards phenolphthalein and the ferment of rennet :
1) The compounds neutral to phenolphthalein, which do not coagulate with
rennét and
2) The compounds which react acid to phenolphthaleïn and are coagulated by
rennet in presence of calcium saits.
៖
In the compounds which react acid about 3 of the quantity of the base is bound
which is contained in the neutral salts.
The salts of casein which are neutral and acid to phenolphthalein are according
to this invention prepared by dissolving caseïn in the calculated quantity of alkali,
milk of lime or their substitutes, namely, alkaline carbonates or phosphates and
evaporating the solution in vacuo.
The following is an example of the preparation of the neutral or acid sodium-
salt of casein.
3 kilos. casein are dissolved in 3 litres of water with 218 grammes or
152 grammes bicarbonate of soda or the equivalent quantity of caustic soda, and
the water is completely evaporated in vacuo, overheating being avoided.
If for the caustic soda or the carbonate of soda is substituted the equivalent
quantity of milk of lime, the calcium salts are obtained by operating in the
same way:
The salts of casein which react neutral or acid to phenolphthalein form white
powders soluble in water:
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 herein described manufacture of salts of caseïn in a dry state, by
evaporating to dryness in vacuo solutions of casein in fixed alkalies, alkaline
carbonates, sodium phosphate or milk of lime.
2. The product manufactured as above set forth.
Dated this 15th day of At 100
ABEL & IMRAY;
Agents for the Applicant.