THE PRODUCTION OF CORN OIL. 19 
of management and office organization would almost certainly make 
the operation unprofitable. 
Assuming that the foregomg estimate of approximately 1 cent is 
the cost to produce 1 pound of oil in the average hominy plant (dry 
process), it is possible to arrive at the cost for similar operations in 
starch or glucose plants (wet process). As previously stated, the 
wet-process germs yield approximately three times as much oil as 
the dry-process germs. The cost to produce a pound of oil in a 
starch plant would be, therefore, about a third of a cent. Some 
operators in starch plants were of the opinion that the cost would 
approximate half a cent a pound. 
Table III gives a comparison of the revenue that may be obtained 
by disposing of the germ material for mixing with feed and by 
expelling the oil and returning the oil cake to the feed. 
TaBLE III.—Comparison of the revenue obtainable from the germs from 1 bushel of corn 
when disposed of respectively as feed and when used for oil expelling in either starch or. 
hominy malls. 
7 
Wet Dry 
process | process 
Items. (starch | (hominy 
mills). mills). 
| 
Gernmsobtainediiromslabushell oncorna snes eeeee eee ee aera ies cer cece pounds... 3. 47 4.17 
Revenue from germs sold as feed, at 2.5 centsa pound......-.......-.....---- cents. . 8. 40 10. 42 
Oikobtainabletromysernis ay seeps ence ee ee ee eee ete case eee ames pounds¢.. 25 at 
ROVeMUCTTONNOW abel a ICOMESH yO O Ltn Castes ee ser ae ener ener ge cents. . 18. 75 WS 
@PNCATKO TOP CaO Oe epee eee ope en eter ee oe yen ge Me Nae a pounds ?.. Dene 3. 67 
Revenueiron oilicake; at 2°5 centsia pound 222522. —- 2-2-2 -ece tee esse les. cents... by /595) 9.17 
Total revenue from expelling operation (cake and oil).................4....-- doles. 24. 30 16. 67 
Deduchcostiotexpellin gest jas seen seco eee hate tosses eee seas eeoe meee domes ¢. 63 d.5 
Netreventievtorexpe ling see aes ao eeeien epee Seen tee en eee dons. 23. 67 16.17 
Balance in favor of expelling as against disposal of germs for feed stock........ do.... 15:27 5. 75 
a ee the percentage of oil obtainable by expelling the germs varies greatly, only the average is here 
used. 
b The weight of oil cake obtainable is here calculated simply as the difference between the weight of the 
germs used and that of the oilremoved. For example, 100 pounds of dry-process germs are considered 
as yielding 12 pounds of oiland 88 pounds of oileake. Although not absolutely accurate, it is considered 
sufficiently so for the purpose here intended. However, if by actual fat determination the germs are 
found to contain 18 per cent of oiland the cake 6 per cent, the following formula should be used to determine 
the exact weights of oil and oil cake obtained, thus: [6 (100—a) +100] +-a=18 pounds (total oil present in 100 
pounds of germs), in which a represents the actual number of pounds of oil which will be obtained. Upon 
solving this equation it is found that 12.766 pounds of oil are obtained, and 87.234 pounds of oil cake con- 
taining 6 per cent of fat. 
e At one-half cent per pound. 
@ At 1cent per pound. 
The figures in Table III are intended to be only approximations, 
since several factors have not been considered which might increase 
shghtly the cost of producing the oil. The fact that the germ mate- 
rial for expelling must be made more dry than that for feed purposes 
will add slightly to the cost. The material would also probably be 
reduced or ground to a greater extent than if intended for feed. 
These operations are not expensive, however, and since the actual 
cost is difficult to estimate they have been omitted from the calcula- 
tions. The efficiency with which the degermination and expelling 
