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SPONTANEOUS ORGANIZATION OF TWO XANTHOPHYLL COMPOUNDS IN WATER-ALCOHOL SOLUTIONS AS SHOWN BY CIRCULAR DICHROISM |
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| Authors: | J. Lematre B. Maudinas C. Ernst |
| Affiliation: | *Laboratoire de Chimie Biologique, Faculte dc Pharmacie. 7 rue Albert Lebrun, 54000 Nancy, France.;†Laboratoire de Biologie Vegetale, ERA 799 CRS, Boulevard des Aiguillettes, Universite de Nancy I, 54000 Nancy, France.;‡Laboratoire de Spectroscopie et de Structure Moleculaire, Dichrdisme, ISIN, Pare R. Bentz, 54500 Vandoeuvre les Nancy, France. |
| Abstract: | Abstract— Alcoholic solutions of lutein, violeoxanthin and acetylated lutein containing more than 50% water exhibited strong CD signals in the main absorption region of the polyene chromophore. The CD spectra obtained depended on the water content of the medium and were affected by temperature and detergents. The spectroscopic changes in absorption and circular dichroism reveal a spontaneous ability of such pigment molecules for a stereospecific multimolecular organization in a hydrophilic environment. The biological significance of these spectroscopic phenomena is also discussed. |
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