Kitol. II. Formation of Kitol-like Substance from Vitamin A by Sunlight.
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چکیده
منابع مشابه
Studies in Vitamin A 13. THE ALLEGED FORMATION, OF VITAMIN A FROM p-CAROTENE TREATED WITH IODINATED CASEIN
8. Preliminary work on whale-liver phospholipins suggests that kitol is not present in the true acetone-insoluble lipid, but that it may occur in more than one type of combination. 9. Vitamin A and possibly kitol is present in finwhale milk. A small sample of kitol was kindly placed at our disposal by Dr Baxter of Distillation Products Inc. We are indebted to the Ministry of Food and the Medica...
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15 صفحه اولSubstances Related to Vitamin A in the Whale Liver Oil
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, ...
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Vitamin D is the sunshine vitamin that has been produced on this earth for more than 500 million years. During exposure to sunlight 7-dehydrocholesterol in the skin absorbs UV B radiation and is converted to previtamin D3 which in turn isomerizes into vitamin D3. Previtamin D3 and vitamin D3 also absorb UV B radiation and are converted into a variety of photoproducts some of which have unique b...
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ژورنال
عنوان ژورنال: Nippon kagaku zassi
سال: 1958
ISSN: 0369-5387,2185-0917
DOI: 10.1246/nikkashi1948.79.1459