Scientific American Supplement, No. 365, December 30, 1882Various
Science
Scientific American Supplement, No. 365, December 30, 1882
Various
Science -- Periodicals
"The analyses of wheat given below were undertaken for the purpose of
determining whether the millers' grades of wheat correspond to an actual
difference in the chemical character of the wheat. For this purpose
samples of wheat were secured, which were inspected and certified to by
M. W. Trexa on April 13th of this year. The inspection cards contained
no statement except the grade of the wheat and the weight per bushel,
but the samples were all of Fife, for the purpose of a better
comparison. The analyses of the wheat were made during October in this
laboratory. In each case the wheat was carefully separated from any
foreign substances before analysis. The results of analysis were as
follows:
Grade Grade Grade
No. 1. No. 2. No. 3.
Weight per bushel.................. 59 lb. 561/2 lb. 55 lb.
Grains to weigh 10 grains.......... 366 474 491
Per ct. Per ct. Per ct.
Foreign matter (seeds, etc.)....... 0.41 0.20 1.57
Nitrogen........................... 2.09 2.08 2.17
Phosphorus......................... 0.35 0.46 0.46
Water.............................. 12.34 11.31 11.85
Ash................................ 1.59 1.92 1.97
Albuminoids (nitrogen multiplied
by 61/4)........................... 13.06 13.00 13.56
Cellulose.......................... 2.03 2.37 2.50
Starch, sugar, fat, etc............ 70.98 71.40 70.12
"The analyses require but little comment. The only substances in which
there is evident connection between the results of analysis and the
grades of wheat are the cellulose, ash, and phosphorus. As regards the
last substance, grades two and three seem to have the greatest food
value. But it seems quite probable from the results that greater
difference would be found between different varieties of wheat of the
same kind than is shown here between different grades of the same
variety of wheat. However, it does not necessarily follow from this that
the different grades of wheat are of nearly equal value to the miller
for the purpose of making flour. That is a question which can be best
answered by determining accurately the amount and character of the flour
which can be made from each grade of wheat. If possible, the
investigation will be continued in that direction."
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