. Carotenoids, their comparative biochemistry. Carotenoids. CAROTENOIDS with either perphthalic or perbenzoic acid in chloroform solution. In the presence of traces of hydrogen chloride a chloroform solution of a 5 : 6-epoxide isomerizes producing a furanoid type of compound. (5 : 8-epoxide) and at the same time regenerating a small amount of the parent compound. ^ ^ Violaxanthin and flavoxanthin have now been shown to be com- pounds of this type» 6 . violaxanthin is the di-epoxide of zeaxanthin (*3 : 3'-dihydroxy-(3-carotene, ^-carotene 3 : 3'-diol) and flavoxanthin is the furanoid isomer
. Carotenoids, their comparative biochemistry. Carotenoids. CAROTENOIDS with either perphthalic or perbenzoic acid in chloroform solution. In the presence of traces of hydrogen chloride a chloroform solution of a 5 : 6-epoxide isomerizes producing a furanoid type of compound. (5 : 8-epoxide) and at the same time regenerating a small amount of the parent compound. ^ ^ Violaxanthin and flavoxanthin have now been shown to be com- pounds of this type» 6 . violaxanthin is the di-epoxide of zeaxanthin (*3 : 3'-dihydroxy-(3-carotene, ^-carotene 3 : 3'-diol) and flavoxanthin is the furanoid isomer of lutein (xanthophyll).' • M^ Me Mc. Me Me Me Zeaxanthin Me Me Me. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Goodwin, T. W. (Trevor Walworth). New York, Chemical Pub. Co.
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