[Photoprotective properties of melanins from grape (Vitis vinifera) and black tea (Thea sinensis)].
Dark pigments of melanin type were extracted from the rind of ripe grapes Vitis vinifera (ring "Alfa") and pack tea (Thea sinensis). The study of photoprotection activity of the extracted pigments have shown that they intensively absorb radiation in the UV and visible. The increase of the photoprotection effect correlates with the concentration of paramagnetic centers in the melanins. The pigments reduce the number of damaged molecules of plasmid DNA pBR-322 and inhibition the IUV-induced lipid peroxidation.
Novikov
D A
DA
Department of Biochemistry, Biological Faculty, Belarus State University, Minsk, 220050, Belarus. biochem@bio.bsu.unibel.by
Kurchenko
V P
VP
Azarko
I I
II
D028244:Camellia / Q000737:chemistry*; D004247:DNA / Q000187:drug effects / Q000528:radiation effects; D008543:Melanins / Q000302:isolation & purification / Q000494:pharmacology*; D011837:Radiation-Protective Agents / Q000302:isolation & purification / Q000494:pharmacology*; D014466:Ultraviolet Rays; D027843:Vitis / Q000737:chemistry*
D008543:Melanins; D011837:Radiation-Protective Agents; D004247:DNA
Fotoprotektornye svoĭstva melaninov iz vinograda (Vitis vinifera) i chernogo chaia (Thea sinensis).