16 
BULLETIN" 215, U. S. DEPARTMENT OF AGRICULTURE. 
RELATION OF MOISTURE CONTENT TO KEEPING QUALITY OF 
DEGERMINATED BOLTED ROLLER-GROUND MEAL. 
These experiments were carried on in two series, the first with ton 
lots and the second with carload lots. The meal used in both series 
was ground during the month of May, 1913, at the mill of the Ameri- 
can Hominy Company, Terre Haute, Indiana. Each lot of meal was 
divided into two parts, one of which was shipped to Savannah, 
Georgia, the other to Chicago, Illinois. At both places the meal was 
stored in public warehouses designed for products of this nature, 
sample bags being withdrawn from month to month for chemical 
analysis and tests as to quality. The analyses of the meal as ground 
were made at the Chicago Food and Drug Inspection Laboratory, as 
were also the analyses at the end of each period of the meal stored at 
that center. Analyses of the meal stored at Savannah were made at 
the Government food laboratory located in that city; In addition to 
the usual chemical determinations, the general appearance of the 
meal and the taste and flavor of the mush prepared from the meal 
were noted. 
STORAGE EXPERIMENTS WITH TON LOTS OF MEAL MILLED MAY 7, 1913. 
DESCRIPTION AND ANALYSES OF THE MEAL AS MILLED. 
Five lots of 1 ton each were milled to contain percentages of mois- 
ture ranging from 11.41 to 16.86. Since the corn used, owing to the 
good quality of the crop of 1912 and the lateness of the season, was 
quite dry, the meal ground without any drying whatever (lot B) 
contained only 15.04 per cent of moisture. In order to secure one lot 
with a higher moisture content, such as would have been present in 
undried meal milled earlier in the season, water in addition to the 
amount usually employed for tempering was added to the corn. In 
this manner the percentage of moisture in lot A was raised to 16.86. 
It was recognized that meal thus prepared was not strictly compara- 
ble with that made without the addition of water from corn with a 
higher moisture content, and due allowance was made in interpreting 
the results^ 
Table 7. — Composition of ton lots of degerminated, bolted, roller-ground corn meal, 
- containing different amounts of moisture, as milled May 7, 1913, for use in storage 
experiments. 
Product. 
Mois- 
ture. 
Acid- 
ity. 
Protein 
(NX6.25). 
Fat. 
Nitrogen- 
free 
extract. 
Crude 
fiber. 
Ash. 
Meal as- milled: 
Lot A, undried, water added . 
Lot B, undried 
Lot C, medium dried 
Lot D , medium dried 
Lot E , high dried 
Moisture-free meal: 
Lot A , undried , water ad ded . 
Lot B , undried 
Lot C, medium dried 
Lot D , medium dried 
Lot E, high dried 
Per 
cent. 
16.86 
15.04 
13.41 
13.27 
11.41 
Per 
14.7 
14.0 
14.1 
13.4 
11.9 
17.7 
16.5 
16.3 
15. 5 
13.4 
cent. 
6.53 
6.50 
6.69 
6.66 
6.72 
7.85 
7.65 
7.73 
7.68 
7.58 
Per 
cent. 
0.71 
.94 
1.05 
.80 
1.32 
1.11 
1.21 
.92 
1.49 
Per cent. 
75.13 
76.65 
77.87 
78.32 
79.47 
90.22 
89.92 
90.30 
89.71 
Per 
cent. 
0.49 
.52 
.59 
.59 
.62 
Per 
cent. 
0.28 
.35 
.39 
.36 
.59 
.34 * 
.61 
.41 
.69 
.45 
.68 
.42 
.70 
.52 
