Unique spectroscopic properties of synthetic 15-cis beta-carotene, an important compound in photosynthesis, and a medicine for photoprotective function

• Autorzy: Bialek-Bylka G E , Jazurek B. , Dedic R. , Hala J. , Skrzypczak A.
• Języki publikacji: EN

Abstrakty

EN

The (11Bu+) energy of synthetic 15-cis β-carotene exhibits a linear dependence on (n2-1)/(n2+2) in non-polar and polar solvents; in this it is similar to (that of) all-trans β-carotene. The point of intersection is at (n2-1)/(n2+2) = 0.3 for both isomers. The microenvironment of 15-cis β-carotene in the Photosystem II reaction center was established as having a mean refractive index 1.473. Persistent spectral hole burning with a very broad (≈30 nm) hole observed around 500 nm (corresponding to an extremely short excited lifetime τ ≈9 fs) indicates that 15-cis β-carotene has/displays very efficient photoprotective quenching.

Słowa kluczowe

EN

medicine; reaction; photoprotective function; photosystem II; ionic solvent; 15-cis beta-carotene; photosynthesis

• Wydawca: -
• Czasopismo: Cellular and Molecular Biology Letters
• Rocznik: 2003
• Tom: 08
• Numer: 3
• Opis fizyczny: p.689-697,fig.

Twórcy

autor

Bialek-Bylka G E

• Poznan University of Technology, Nieszawska 13a, 60-965 Poznan, Poland

autor

Jazurek B.

autor

Dedic R.

autor

Hala J.

autor

Skrzypczak A.

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