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Type: Artigo de periódico
Title: Stability Of Copper And Magnesium Chlorophylls
Author: Bobbio P.A.
Guedes M.C.
Abstract: The comparative stability of MgChl and CuChl to light, oxygen, temperature, sodium bisulfite, benzoyl peroxide and acid was studied by measuring the decrease of the absorbances at 650 and 660 nm of CuChl and MgChl solutions in n-propanol, respectively. Values for the apparent first order reaction rate constant and for the half-life time were calculated. Results indicated that, except for benzoyl peroxide which rapidly decolorizes both pigments, CuChl is considerably more stable than MgChl following the increased covalent character of the bond between ligands and the d orbitals of Cu2+. © 1990.
Rights: fechado
Identifier DOI: 10.1016/0308-8146(90)90051-5
Date Issue: 1990
Appears in Collections:Unicamp - Artigos e Outros Documentos

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