ONIT eg STATES DEPARTMENT OF a eee 
Centribution from the Bureau of Chemistry 
CARL L. ALSBERG, Chief 
Washington, D. C. PROFESSIONAL PAPER June 5. 1920 
EXAMINATION OF FROZEN EGG PRODUCTS AND 
INTERPRETATION OF RESULTS 
By H. W. ReprFrep! 
CONTENTS. 
S Page. Page. 
Object ofinvestisation.. 2. 0.00... ee cece wees 1 Progress of investigation—Cecntinued. 
Pails QUILMES UIGALION <2 <<, ajo ae oa ce wine ose Zz Results cf examination of samples...... 18 
Preliminary investigation.................. 3 Discussion cf results of examination.... 55 
Results of preliminary investigation... 3 Interpretation of results ci investigation.... 69 
Discussion of results of preliminary in- Methods of examination cf samples......... 77 
WOSIITE OT SAS Ae a See eee er i4 IMIG OOGOISHPSTOC A caeeogenaeunceucuacdene 77 
Prosress of investigation...................- 17 Methods -sdoptede 222.2 2. hanes eee 85 
Preparation of samples..............-.-- 17 | SUMMA are A ge eee cin Se calcayse ee 96 
Examination of samples..............-. 18 | 
OBJECT OF INVESTIGATION. 
The preparation of frozen egg products is universally recognized as 
an excellent means ci conserving eggs which can not be sold in the 
shell as a first-grade product. So extensive has the business become 
that 19,286,396 pounds of this material were held in storage on 
January 1, 1920. Careful studies a frozen egg products, by 
M. E. etsone an and her colenens es,” have niduded studies of the 
character of the raw material, the equipment and operation of break- 
ine rooms, and the quality se the product sent mto commerce. As 
a result there has been a marked improvement in the selection of the 
raw materials used and of the processe s of manufacture, with a conse- 
quent improvement in the quality of the finished products. The 
examination of these 7 roducts has been a eat with what was sus- 
A 
4} 
pected of being a disparity of results when material of the same 
i The investigation discussed in this builetin was eas by the author with the assistance of the 
following members of the Bureau of Chemistry: M. K. Jenkins, i. A. Read, J. H. Bornmann, G. G. 
De Bord, W. F. Duncan, L. D. Elliott, BH. W. sanvon 1, W. R. North, G. C. Swan, and H. B. 
Switzer. 
2U. S. Dept. Agr:, Bur. Chem. Cire. 98 (1912); U. S. Dept. Agr. Buls. 51 ($14), 224 (1916), 39 
(4918), 663 (4918). 
153352°—20—Bull. 846 1 
