Improvements in the Treatment of Blood and other Albuminous Matter, both Animal and Vegetable, for Use in Manufactures and the Arts.
Year: 1897

page_text: Improvements in the Treatment of Blood and other Albuminous
Matter, both Animal and Vegetable, for Use in Manufactures and
the Arts.
I, PERCY GERALD SANFORD, of 20 Cullum Street, in the City of London, Fellow of
the Institute of Chemistry, Analytical and Consulting Chemist, and Assayer, 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 has for its object to so treat blood, or other albuminous matter, both
animal and vegetable, that it is preserved in a condition eminently suited to render it
fit for use in various manufactures and in the arts; for example, for use by calico
printers and others, and for decolourizing tanning liquors, or for other purposes.
According to my invention I add to the albuminous matter to be treated, an
alkaline fluoride, preferably ammonium fluoride, or boro-fluoride of ammonium,
sodium, or potassium. The albuminous matter may, before the addition of the said
ammonium fluoride, or the like, be dissolved in water so that by after treatment it can
be coveniently filtered to remove therefrom any foreign matter; or the solution to
which the said ammonium fluoride, or the like, has been added may be treated by
dialysis.
In treating, for example, vegetable albumen suitable proportions are as follows:-
One part by weight of ammonium fluoride (or an equivalent quantity of boro-fluoride
of ammonium, sodium, or potassium), is dissolved in water at from 25° to 35°
Centigrade and this is added to 150 parts by weight of bran, or other vegetable
albuminous matter employed, and the mash is placed in a dialyser, or it is extracted
under pressure. The vegetable matter so treated is then pressed and the liquor is
filtered. Boracic acid may be added, this being preferably done after dialysis is
complete.
When blood, or equivalent animal albuminous matter is to be treated a suitable
proceeding is to take 100 parts by weight of dry blood scales for example, or an
equivalent quantity of blood serum, or defibrinated blood, and rub this down in a dry
mill, or mortar, with from 20, to 30, parts by weight of fluoride of ammonium, or its
equivalent of boro-fluoride of ammonium, sodium, or potassium, with, or without, the
addition of boracic acid. To the paste so formed water is added to form an emulsion
and the whole is then placed in a dialyser the pan being filled with water and dialysis
effected at a temperature of from 25° to 30° Centigrade. When the operation is
completed the substance remaining on the diaphragm is drained off and should be of
a specific gravity of from 1·022 to 1.052 or higher, and should contain, per litre, from
50 to 200 grammes of active materials (those materials which are precipitable by heat,
or by the action of picro-citric acid in the cold).! Or the blood scales, or the like, may
be placed upon the diaphragm of the dalyser and a solution of fluoride as above
mentioned be placed in the pan when the action of dialysis is much accelerated but
in this case much more extraneous matter (i.e. matter precipitable by heat or picro-
citric acid in the cold) enters into solution than would otherwise be the case.
In using
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page_text: fresh blood it is well to allow it to serumise, the clotted blood being treated as
hereinbefore described. The albuminous matter treated as aforesaid may be partially,
or wholly, dried. On account of the difficulty of obtaining a solution of a greater
density than 1.030 I prefer to run off the material, which is upon the pan of the
dialyser, to a series of suitable trays or shallow troughs, wherein it can be concentrated 5
to any desired consistency for the purpose of increasing its density. Or it may be
carried to dryness. In both cases the evaporation should be effected under vacuum
and at as low a temperature as possible.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what I 1
claim is
1. The treatment of blood and other albuminous matter, both animal and vegetable,
by means of an alkaline fluoride, such as ammonium fluoride, or boro-fluoride of
ammonium, sodium, or potassium, substantially as hereinbefore described.
2. As a new product, blood, or other albuminous matter, both vegetable and animal, 1
which has been treated as hereinbefore described.