Carotin the Principal Natural Yellow Pigment of Milk Fat Chemical And Physiolo
Carotin the Principal Natural Yellow Pigment of Milk Fat Chemical And Physiolo
Leroy Sheldon Palmer
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M 26. 0 17. 0 5. 5 4. 4 1. 0 0. 5 225-242 233-253 261-278 272-291 301-319 312-330 Carotin Xanthophyll In C 2 H 6 OH 10 m. M 10 m. M 257-275 263-280 303-318 305-325 345-364 355-. . . Carotin Xanthophyll It will be noticed that the relative position of the bands of car- otin and xanthophylls is more characteristic in carbon bisulphide than in alcohol. On this account, nearly all subsequent spectro- scopic studies were made in carbon bisulphide solution. It will be noticed that both pigments showe...d three bands. The difference in the color of the carbon bisulphide solutions of the carotin and xanthophyll pigments when showing bands of equal inten- sity is also especially noteworthy. To the eye, the carotin solutions are a deep red orange while the xanthophyll solutions are a much purer orange color. It is worthy of mention that this characteristic difference was so noticeable throughout all this study, that in all cases the color of the carbon bisulphide solution of unknown pig- ments was recorded in connection with the measuring of the absorp- tion bands.
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