Studies on Kitol the Influence of Kitol Fraction on the Determination of International Unit of Vitamin A

Abstract

It has been said by several informations that the international unit of vitamin A in whale liver oil by spectrophoto-metry is too larger to be compared with the results of animal test- Therefore the authors studied oij the influence of Kitol fraction (separated fraction B) by spectrophotometry. We found that 12.1 % of numerical value of the international of vitamin A in this whale liver oil by means of spectrophotometry should be subtracted. © 1950, The Japanese Society of Fisheries Science. All rights reserved.