BULLETIN OF THE 
No. 215 
Contribution from the Bureau of Chemistry, Carl L. Alsberg, Chief. 
May 21, 1915. 
(PROFESSIONAL PAPER.) 
COMPOSITION OF CORN (MAIZE) MEAL MANUFACTURED BY 
DIFFERENT PROCESSES AND THE INFLUENCE OF COM- 
POSITION ON THE KEEPING QUALITIES. 
By A. L. Winton, 1 W. C. Burnet, Chemist in Charge, Savannah Food and Drug 
Inspection Laboratory, and J. II. Bornmann, Assistant Chemist. 
CONTENTS. 
Page. 
Introduction 
Consumption of corn meal , 
Manufacture of corn meal 
Products of corn milling. . . 
Composition of the products of corn mill- 
ing 
Spoilage of meal 
Relation of moisture content to keeping qual- 
ity of degerminated bolted roller-ground 
meal. • — 
Comparative keeping quality of whole-kernel 
stone-ground meal and degerminated bolted 
roller-ground meal 
Summary 1 
16 
INTRODUCTION. 
The cause, detention, and prevention of the spoilage of Indian corn 
have been given special attention by the investigators in the Bureau 
of Plant Industry who have studied the subject from the chemical, 
biological, and toxicological standpoints. In view of the fact that an 
excess of moisture is conducive to spoilage as well as shrinkage, 
Brown and Duvel 2 have introduced a rapid method for the deter- 
mination of this constituent which has come into extensive use in 
grain standardization laboratories as well as in elevators and mills. 
The percentages of moisture obtained by this process are important 
factors in determining the grade of market corn. 
While moisture is doubtless the most important of the controllable 
factors causing deterioration, the determination of acidity has come 
to be recognized as the best chemical means of detecting actual 
1 Dr. Winton was formerly chemist in charge, Food Investigation Laboratory. 
2 Brown, Edgar, and Duvel, J. W. T. A Quick Method for the Determination of Moisture in Grain. U. S. 
Dept. Agr., Bureau of Plant Industry Bui. 99. 
Note. — This bulletin is of interest to corn millers and dealers in corn and corn products and is suitable 
for distribution in all parts of the country. 
85755°— Bull. 215—15 1 
