In continuation of work toward the isolation and identification of vitamin E,1 the following observations have been made. The inactive product obtained by mild bromination of vitamin E concentrates can be reactivated by boiling with Zn dust and HCl in methanol solution. Vitamin E was not destroyed by the catalytic hydrogenation of concentrates at 200° and 200 atmospheres pressure, but the concentrates, after such treatment, were still unsaturated, as indicated by iodine number determinations. An active concentrate of vitamin E has been prepared from crude cottonseed oil.
Proceedings of the Iowa Academy of Science
©1934 Iowa Academy of Science, Inc.
Olcott, H. S.
"Some Chemical Properties of Vitamin E,"
Proceedings of the Iowa Academy of Science, 41(1), 173-173.
Available at: https://scholarworks.uni.edu/pias/vol41/iss1/58