Juniata sentinel and Republican. [volume] (Mifflintown, Juniata County, Pa.) 1873-1955, 1877-08-08
SCIENTIFIC.

Desiccdted Eg1S.-lt Is already well
understood that if albumen or white of
egg be slowly dried In mass, or be dried
rapidly at too high temperature, pro-
duct, or material will be the result
which is of inferior and not uniform
character or quality. Also, that if the
yelk of eggs be dried i'm mass, slowly
or rapidly, the result will be material
or product inferior in quality. not uni
form in structure, difficult of solution,
and of little value for the ordinary uses
of the yelk of eggs. IL batter of eggs
| composed of the whites and yelks to-
gether be dried in mass, the results
lack uniformity and solubility; and if
either of these products, so obtained, be
subsequently, ground or pulverized, By
any known process, the mealy result so
obtained is of inferior quality, is slow
of solution in water, and does not pos
sess several of the important properties
of the fresh shell eggs.
To meet this difficulty, the idea of the
desiccation OF eggs in rotation or agita-
ton under blasts of air, either heated or
otherwise, has been variously applied
during long time past, both in this
country and in Europe, but the diff
Guilty mainly encountered has been that
of producing material capable of being
preserved in different climates, OF being
readily and completely dissolved, and
of being applied TO the principal uses
and purposes for which the egg may be
applied before desiccation.
The natural egg contains, in varying
proportions, a certain oil, hereinafter
spoken of as the oil of the egg. This
oil Ia f,,,p ny nf
the egg. 1t is innocuous while in its
natural conditiOn-that is, in undis-
turbed combination with, or relation to,
the other parts of the organism of the
egg, its proportion thereto being rela-
lively small.
When however, this oil Is set free by
any process, 1t rapidly becomes rancid.
highly offensive, and, in fact, acrid, and
is a most potent and active agent in ef-
fecting the deterioration and decOmpo-
sition of the other parts of the egg with
which it may be brought in contact.
If, during the process of desiecation.
the material to be desiccated is allowed
to rise in temperature above a certain
point, hereinafter indicated, the oil of
the egg contained in the more solid
parts, or which is not in suspension or
emulsion, but is in more perfect COM
bination with the other constituents Ofs
the egg, particularly that i'm the yelk
and so in the batter composed in the
yelks and whites, is set free TO a greater
or less extent, according to the fresh
ness and vitality of the eggs used and
the degree of such heat. 1t has also
been ascertained, by experiment, that
tn e temperature at which this result
follows varies at different times. The
causes apparently depend upon baro-
metric and otner conditions OF the at
mOsphere as we'll as the state of the
thermometer. Such a result has usual
ly followed whenever the material has
been raised above S5 degrees Fab. The
highest temperature 10 which Mr.. w.
o. Stoddard, of New York city, who has
made special study of this subject, has
been able TO subject the material with
out that result following was % degrees
Fab. but that was under exceptional
atmospheric conditions, and he con-
siders a much lower temperature than
Sc degree, and, if possible, than so deg,
very desirable for safety, and essential
to commercial success in the manufac-
ture. Indeed, his own operations have
been conducted at temperature not to
exceed so deg.
Mr.. Stoddard has lately patented
May s, ls77) a device, the object of
which is 10 regulate and control the
temperature of the eggs, or parts OF
eggs, or batter eggs, or other material
during the process OF desiccation, so as
TO prevent the development or freeing
from the more solid part of such ma
terial of the oil of the egg not held in
suspension or emulsion, being much
the larger part of all the oil contained
in the egg, AID afterward 10 eliminate
from the product derived such small
portions of the oil of the egg as may
have been held in suspension or emul-
sion, or may have been set free In the
process Of manufacture. The granu
lated or mealy product which thus OBJ
tanned will then, he claims, retain and
protect its proper proportion of the oil
of the egg. even il exposed 10 much
higher temperature than that above
mentioned.
To obtain the object thus substan-
TALLY set forth while employing for the
process of desiccation q drying blast OF
warm air, he employs for the rotating
surface, on which such desiccation is
produced, a hollow cylinder, cone,
frustum of cone, or other surface
which may be artificially cooled by
means of ventilation or evaporation i'll
the interior while the material within
is actively agitated.