The Isolation and Study of Some Naturally Occurring Fluorescent Organic Compounds and Stereoisomerization of Prolycopene, Pro-γ-Carotene, and Lycopene in Chickens and Hens
<p>A report on the detection, analysis, spectrum, and identification of several polycyclic aromatic hydrocarbons as lipoid-soluble, fluorescent organic compounds occurring in certain marine invertebrates (barnacles) is presented. Crystalline preparations of these compounds have been o...
| Summary: | <p>A report on the detection, analysis, spectrum, and identification
of several polycyclic aromatic hydrocarbons as lipoid-soluble,
fluorescent organic compounds occurring in certain marine invertebrates
(barnacles) is presented. Crystalline preparations of these compounds
have been obtained from the intensely fluorescent zones resulting
from chromatographic resolution of the crude barnacle extracts. These
hydrocarbons include anthracene, phenanthrene, fluoranthene, chrysene,
1,12-benzperylene, coronene, and the strongly active carcinogen,
3,4-benzpyrene. Similar experiments carried out with the beach worm have
revealed only traces of polycyclic aromatic compounds. They have not
been found in deep-sea mud samples or in some seaweeds tested. Some
suggestions are made as to the origin of these compounds in barnacles
(and beach worms).</p>
<p>When polycis carotenoids are fed to chickens and hens over a
period of several days, and the crude extracts of the different
tissues, gut washings, and feces of these animals are submitted to
chromatographic analysis, the pigments recovered are found to consist
of the unchanged starting compound and stereoisomerized forms.
This bio-stereoisomerization results in the formation of not only
the all-trans and neo-forms of the carotenoid administered but also
polycis isomers, some of which possess more cis double bonds than
the starting material.</p>
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