Substances Related to Vitamin A in the Whale Liver Oil
نویسندگان
چکیده
Fig. I. Absorption spectra of vitamin Ai (Ai), vitamin A2 (A2), subvitamin A (S), kitol (K), anhydrovitamin Ai (Ai'), anhydrovitamin A2 (AD and anhydrosubvitamin A (S'). to isolate kitol having the absorption maximum at 290 mμ.1> Furthermore, substances related to vitamin A such as anhydro vitam:ln A and subvitamin A have been confirmed in ordinary fish liver oils. Also in the whale liver oil, these vitamins may ~ expected being present. It is very interesting that there are some substances with the structure closely related to vitamin A. This paper is concerned with the analytical method of substances related to vitamin A, with the thermal change of whale liver oil, and with the action of maleic anhydride upon the whale liver ojJ. Analysis of Absorption Spectrum of Whale Liver Oil.
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