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1998 (1)
1982 (1)
1Author    W. Erner, H. K. Alusa, W. Illiam, G. Filby, RuthM. ÜnznerRequires cookie*
 Title    Chemical Aspects of the Mutagenic Activity of the Ascorbic Acid Autoxidation System  
 Abstract    It has been proposed that the mutagenic activity associated with the ascorbic acid autoxidation system may involve hydrogen peroxide and peroxide radicals. We report here that the mutagenic effect may also partially reside in as yet unknown secondary products. The observed mutagenicity of 2,3-diketogulonic acid, one o f the main oxidation products, reflects its ability to form hydrogen peroxide. 
  Reference    Z. Naturforsch. 37c, 40—45 (1982); received September 16 1981 
  Published    1982 
  Keywords    Ascorbic Acid, Autoxidation, Hydrogen Peroxide, Mutagenic Effect, Oxidation Products 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0040.pdf 
 Identifier    ZNC-1982-37c-0040 
 Volume    37 
2Author    E. Rre, P.A M W IlliamRequires cookie*
 Title    Interaction of the Vanadyl(IV) Cation with L-Ascorbic Acid and Related Systems  
 Abstract    The interaction of V 0 2+ with L-ascorbic acid and dehydroascorbic acid was investigated by electronic spectroscopy in solution at different pH values. In the case of ascorbic acid, two different solid complexes containing one or two m onodeprotonated ascorbate ligands could be isolated and characterized. With dehydroascorbic acid, interaction begins at pH = 4 but at higher pH values the ligand is hydrolysed irreversibly, generating 2,3-diketogulonic acid. A solid complex containing this ligand could be precipitated at pH = 7. Its spectroscopic behavior confirms the interaction of the cation with an enolised form of the acid. 
  Reference    Z. Naturforsch. 53b, 256—262 (1998); received O ctober 24 1997 
  Published    1998 
  Keywords    Vanadyl(IV), Ascorbic Acid, Oxidation Products, Solution Interactions, Solid Complexes 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0256.pdf 
 Identifier    ZNB-1998-53b-0256 
 Volume    53