Creative Chemistry: Descriptive of Recent Achievements in the Chemical IndustriesSlosson, Edwin E. (Edwin Emery)
Science
Creative Chemistry: Descriptive of Recent Achievements in the Chemical Industries
Slosson, Edwin E. (Edwin Emery)
Chemistry, Technical
On cutting open the seed you will observe that it consists of an oily,
mealy kernel encased in a thin brown hull. The hulls, amounting to 700
or 900 pounds in a ton of seed, were formerly burned. Now, however, they
bring from $4 to $10 a ton because they can be ground up into
cattle-feed or paper stock or used as fertilizer.
The kernel of the cottonseed on being pressed yields a yellow oil and
leaves a mealy cake. This last, mixed with the hulls, makes a good
fodder for fattening cattle. Also, adding twenty-five per cent. of the
refined cottonseed meal to our war bread made it more nutritious and no
less palatable. Cottonseed meal contains about forty per cent. of
protein and is therefore a highly concentrated and very valuable feeding
stuff. Before the war we were exporting nearly half a million tons of
cottonseed meal to Europe, chiefly to Germany and Denmark, where it is
used for dairy cows. The British yeoman, his country's pride, has not
yet been won over to the use of any such newfangled fodder and
consequently the British manufacturer could not compete with his
continental rivals in the seed-crushing business, for he could not
dispose of his meal-cake by-product as did they.
[Illustration: Photo by Press Illustrating Service
Cottonseed Oil As It Is Squeezed From The Seed By The Presses]
[Illustration: Photo by Press Illustrating Service
Cottonseed Oil As It Comes From The Compressors Flowing Out Of The
Faucets
When cold it is firm and white like lard]
Let us now turn to the most valuable of the cottonseed products, the
oil. The seed contains about twenty per cent. of oil, most of which can
be squeezed out of the hot seeds by hydraulic pressure. It comes out as
a red liquid of a disagreeable odor. This is decolorized, deodorized and
otherwise purified in various ways: by treatment with alkalies or acids,
by blowing air and steam through it, by shaking up with fuller's earth,
by settling and filtering. The refined product is a yellow oil, suitable
for table use. Formerly, on account of the popular prejudice against any
novel food products, it used to masquerade as olive oil. Now, however,
it boldly competes with its ancient rival in the lands of the olive tree
and America ships some 700,000 barrels of cottonseed oil a year to the
Mediterranean. The Turkish Government tried to check the spread of
cottonseed oil by calling it an adulterant and prohibiting its mixture
with olive oil. The result was that the sale of Turkish olive oil fell
off because people found its flavor too strong when undiluted. Italy
imports cottonseed oil and exports her olive oil. Denmark imports
cottonseed meal and margarine and exports her butter.
Public-domain text, read in full here on John Shaqi.
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