UNITED STATES DEPARTMENT OF AGRICULTURE 



h BULLETIN No. 1054 «pfe 





Contribution from the Bureau of Plant Industry 

 WM. A. TAYLOR, Chief 



swr'^su 



Washington, D. C. 



PROFESSIONAL PAPER 



March 11, 1922 



COMPARISON OF CORN OILS OBTAINED BY EX- 

 PELLER AND BENZOL EXTRACTION METHODS. 



By A. F. Sievers, Chemical Biologist, Office of Drug, Poisonous, and Oil Plant 



Investigations. 



CONTENTS. 



Introduction 



Character and composition of corn 

 oil 



Review of previous investigations.. 



Experimental work 



Method of selecting material 



Benzol extraction of corn germs 

 and oil cake 



Page. 



Page. 

 Experimental work — Continued. 



Removal of the solvent 9 



Appearance and character of the 



crude oils 10 



Refining the oils 11 



Comparison of the finished oils 14 



Summary 16 



Literature cited 17 



INTRODUCTION. 



The production of oil from corn germs resulting from the manu- 

 facture of hominy, starch, glucose, and sirup has become a well- 

 established industry in the United States. The methods of obtain- 

 ing the oil from corn germs, also the economic relation of its 

 production to the manufacture of corn products in general, the 

 utilization of the oil, and its future in the vegetable-oil industry 

 of this country have been described in a bulletin of the Department 

 of Agriculture (43). * Later, a technical study was made of methods 

 for refining corn oil for edible purposes, and a second bulletin was 

 published giving the cost of refining, together with plans and esti- 

 mated cosi for a refinery Ui'i)- 



The present paper deals with still another phase of the corn-oil 

 industry, that of extracting the oil by menus of a solvent. With few 



'The serial oumberi (italic) In parenthe i refer to " Literature cited" a1 the end of 

 letJn. 



i 



