Copper, iron, and zinc interactions with chlorophyll in extracts of photosynthetic pigments studied by VIS spectroscopy

Interactions of copper, iron and zinc with chlorophyll, the major photosynthesis pigment, were studied by VIS spectrophotometry in extracts of photosynthetic pigments (in vitro). Copper predominantly forms Cu-Chl complexes in all studied systems (Cu-, Cu/Fe-, Cu/Zn- and Cu/Fe/Zn-incubated pigment so...

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Bibliographic Details
Published inRussian Journal of Physical Chemistry A Vol. 83; no. 9; pp. 1542 - 1546
Main Authors Zvezdanović, J., Marković, D.
Format Journal Article
LanguageEnglish
Published Moscow Nauka/Interperiodica 01.09.2009
Subjects
Chemistry
Chemistry and Materials Science
Physical Chemistry
Structure of Matter and Quantum Chemistry
Heavy Metal
Chlorophyll
Zinc Porphyrin
Photosynthetic Pigment
Phytin
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ISSN0036-0244
1531-863X
DOI10.1134/S0036024409090222

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Summary:Interactions of copper, iron and zinc with chlorophyll, the major photosynthesis pigment, were studied by VIS spectrophotometry in extracts of photosynthetic pigments (in vitro). Copper predominantly forms Cu-Chl complexes in all studied systems (Cu-, Cu/Fe-, Cu/Zn- and Cu/Fe/Zn-incubated pigment solutions). It is not clear whether iron forms Fe-Chl complexes or produces pheophytin. It’s effect is dominant over zinc (Fe/Zn-system) but highly minor compared to Cu-effect when all three metals are present (Cu/Fe/Zn-Chl system) in the same concentrations.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024409090222