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SPONTANEOUS ORGANIZATION OF TWO XANTHOPHYLL COMPOUNDS IN WATER‐ALCOHOL SOLUTIONS AS SHOWN BY CIRCULAR DICHROISM
Author(s) -
Lematre J.,
Maudinas B.,
Ernst C.
Publication year - 1980
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1980.tb03708.x
Subject(s) - circular dichroism , chromophore , lutein , chemistry , absorption (acoustics) , polyene , molecule , xanthophyll , stereospecificity , pigment , photochemistry , alcohol , absorption spectroscopy , crystallography , carotenoid , organic chemistry , biochemistry , materials science , optics , catalysis , composite material , physics
— 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.