Kitol. II. Formation of Kitol-like Substance from Vitamin A by Sunlight.

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...

‏‎suppression of coke formation in thermal cracking by coke inhibitors‎‏

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Substances 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, ...

Sunlight and Vitamin D

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...

Characteristics of a bacteriocin -like substance produced by Clostridium haemolyticum strain IRP - 135